单片机英文翻译
单片机英文文献资料及翻译
单片机英文文献资料及翻译单片机(英文：Microcontroller)Microcontroller is a small computer on a single integrated circuit that contains a processor core, memory, and programmable input/output peripherals. Microcontrollers are designed for embedded applications, in contrast to the microprocessors used in personal computers or other general purpose applications.A microcontroller's processor core is typically a small, low-power computer dedicated to controlling the operation of the device in which it is embedded. It is often designed to provide efficient and reliable control of simple and repetitive tasks, such as switching on and off lights, or monitoring temperature or pressure sensors.MEMORYMicrocontrollers typically have a limited amount of memory, divided into program memory and data memory. The program memory is where the software that controls the device is stored, and is often a type of Read-Only Memory (ROM). The data memory, on the other hand, is used to store data that is used by the program, and is often volatile, meaning that it loses its contents when power is removed.INPUT/OUTPUTMicrocontrollers typically have a number of programmable input/output (I/O) pins that can be used to interface with external sensors, switches, actuators, and other devices. These pins can be programmed to perform specific functions,such as reading a sensor value, controlling a motor, or generating a signal. Many microcontrollers also support communication protocols like serial, parallel, and USB, allowing them to interface with other devices, including other microcontrollers, computers, and smartphones.APPLICATIONSMicrocontrollers are widely used in a variety of applications, including:- Home automation systems- Automotive electronics- Medical devices- Industrial control systems- Consumer electronics- RoboticsCONCLUSIONIn conclusion, microcontrollers are powerful and versatile devices that have become an essential component in many embedded systems. With their small size, low power consumption, and high level of integration, microcontrollers offer an effective and cost-efficient solution for controlling a wide range of devices and applications.。
单片机英文文献及翻译)
Validation and Testing of Design Hardening for Single Event Effects Using the 8051 MicrocontrollerAbstractWith the dearth of dedicated radiation hardened foundries, new and novel techniques are being developed for hardening designs using non-dedicated foundry services. In this paper, we will discuss the implications of validating these methods for the single event effects (SEE) in the space environment. Topics include the types of tests that are required and the design coverage (i.e., design libraries: do they need validating for each application?). Finally, an 8051 microcontroller core from NASA Institute of Advanced Microelectronics (IAμE) CMOS Ultra Low Power Radiation Tolerant (CULPRiT) design is evaluated for SEE mitigative techniques against two commercial 8051 devices.Index TermsSingle Event Effects, Hardened-By-Design, microcontroller, radiation effects.I. INTRODUCTIONNASA constantly strives to provide the best capture of science while operating in a space radiation environment using a minimum of resources [1,2]. With a relatively limited selection of radiation-hardened microelectronic devices that are often two or more generations of performance behind commercialstate-ofthe-art technologies, NASA’s performance of this task is quite challenging. One method of alleviating this is by the use of commercial foundry alternatives with no or minimally invasive design techniques for hardening. This is often called hardened-by-design (HBD).Building custom-type HBD devices using design libraries and automated design tools may provide NASA the solution it needs to meet stringent science performance specifications in a timely,cost-effective, and reliable manner.However, one question still exists: traditional radiation-hardened devices have lot and/or wafer radiation qualification tests performed; what types of tests are required for HBD validation?II. TESTING HBD DEVICES CONSIDERATIONSTest methodologies in the United States exist to qualify individual devices through standards and organizations such as ASTM, JEDEC, and MIL-STD- 883. Typically, TID (Co-60) and SEE (heavy ion and/or proton) are required for device validation. So what is unique to HBD devices?As opposed to a “regular” commercial-off-the-shelf (COTS) device or application specific integrated circuit (ASIC) where no hardening has been performed, one needs to determine how validated is the design library as opposed to determining the device hardness. That is, by using test chips, can we “qualify” a future device using the same library?Consider if Vendor A has designed a new HBD library portable to foundries B and C. A test chip is designed, tested, and deemed acceptable. Nine months later a NASA flight project enters the mix by designing a new device using Vendor A’s library. Does this device require complete radiation qualification testing? To answer this, other questions must be asked.How complete was the test chip? Was there sufficient statistical coverage of all library elements to validate each cell? If the new NASA design uses a partially or insufficiently characterized portion of the design library, full testing might be required. Of course, if part of the HBD was relying on inherent radiation hardness of a process, some of the tests (like SEL in the earlier example) may be waived.Other considerations include speed of operation and operating voltage. For example, if the test chip was tested statically for SEE at a power supply voltage of 3.3V, is the data applicable to a 100 MHz operating frequency at 2.5V? Dynamic considerations (i.e., nonstatic operation) include the propagated effects of Single Event Transients (SETs). These can be a greater concern at higher frequencies.The point of the considerations is that the design library must be known, the coverage used during testing is known, the test application must be thoroughly understood and the characteristics of the foundry must be known. If all these are applicable or have been validated by the test chip, then no testing may be necessary. A task within NASA’s Electronic Parts and Packaging (NEPP) Program was performed to explore these types of considerations.III. HBD TECHNOLOGY EVALUATION USING THE 8051 MICROCONTROLLERWith their increasing capabilities and lower power consumption, microcontrollers are increasingly being used in NASA and DOD system designs. There are existing NASA and DoD programs that are doing technology development to provide HBD. Microcontrollers are one such vehicle that is being investigated to quantify the radiation hardness improvement. Examples of these programs are the 8051 microcontroller being developed by Mission Research Corporation (MRC) and the IAμE (the focus of this study). As these HBD technologies become available, validation of the technology, in the natural space radiation environment, for NASA’s use in spaceflight systems is required.The 8051 microcontroller is an industry standard architecture that has broad acceptance, wide-ranging applications and development tools available. There are numerous commercial vendors that supply this controller or have it integrated into some type of system-on-a-chip structure. Both MRC and IAμE chose this device to demonstrate two distinctly different technologies for hardening. The MRC example of this is to use temporal latches that require specific timing to ensure that single event effects are minimized. The IAμE technology uses ultra low power, and layout and architecture HBD design rules to achieve their results. These are fundamentally different than the approach by Aeroflex-United Technologies Microelectronics Center (UTMC), the commercial vendor of a radiation–hardened 8051, that built their 8051 microcontroller using radiationhardened processes. This broad range of technology within one device structure makes the 8051an ideal vehicle for performing this technology evaluation.The objective of this work is the technology evaluation of the CULPRiT process [3] from IAμE. The process has been baselined against two other processes, the standard 8051 commercial device from Intel and a version using state-of-the-art processing from Dallas Semiconductor. By performing this side-by-side comparison, the cost benefit, performance, and reliability trade study can be done.In the performance of the technology evaluation, this task developed hardware and software for testing microcontrollers. A thorough process was done to optimize the test process to obtain as complete an evaluation as possible. This included taking advantage of the available hardware and writing software that exercised the microcontroller such that all substructures of the processor were evaluated. This process is also leading to a more complete understanding of how to test complex structures, such as microcontrollers, and how to more efficiently test these structures in the future.IV. TEST DEVICESThree devices were used in this test evaluation. The first is the NASA CULPRiT device, which is the primary device to be evaluated. The other two devices are two versions of a commercial 8051, manufactured by Intel and Dallas Semiconductor, respectively.The Intel devices are the ROMless, CMOS version of the classic 8052 MCS-51 microcontroller. They are rated for operation at +5V, over a temperature range of 0 to 70 °C and at a clock speeds of 3.5 MHz to 24 MHz. They are manufactured in Intel’s P629.0 CHMOS III-E process.The Dallas Semiconductor devices are similar in that they are ROMless 8052 microcontrollers, but they are enhanced in various ways. They are rated for operation from 4.25 to 5.5 Volts over 0 to 70 °C at clock speeds up to 25 MHz. They have a second full serial port built in, seven additional interrupts, a watchdog timer, a power fail reset, dual data pointers and variable speed peripheral access. In addition, the core is redesigned so that the machine cycle is shortened for most instructions, resulting in an effective processing ability that is roughly 2.5 times greater (faster) than the standard 8052 device. None of these features, other than those inherent in the device operation, were utilized in order to maximize the similarity between the Dallas and Intel test codes.The CULPRiT technology device is a version of the MSC-51 family compatible C8051 HDL core licensed from the Ultra Low Power (ULP) process foundry. The CULPRiT technology C8051 device is designed to operate at a supply voltage of 500 mV and includes an on-chip input/output signal level-shifting interface with conventional higher voltage parts. The CULPRiT C8051 device requires two separate supply voltages; the 500 mV and the desired interface voltage. The CULPRiT C8051 is ROMless and is intended to be instruction set compatible with the MSC-51 family.V. TEST HARDWAREThe 8051 Device Under Test (DUT) was tested as a component of a functional computer. Aside from DUT itself, the other componentsof the DUT computer were removed from the immediate area of the irradiation beam.A small card (one per DUT package type) with a unique hard-wired identifier byte contained the DUT, its crystal, and bypass capacitors (and voltage level shifters for the CULPRiT DUTs). This "DUT Board" was connected to the "Main Board" by a short 60-conductor ribbon cable. The Main Board had all other components required to complete the DUT Computer, including some which nominally are not necessary in some designs (such as external RAM, external ROM and address latch). The DUT Computer and the Test Control Computer were connected via a serial cable and communications were established between the two by the Controller (that runs custom designed serial interface software). This Controller software allowed for commanding of the DUT, downloading DUT Code to the DUT, and real-time error collection from the DUT during and post irradiation. A 1 Hz signal source provided an external watchdog timing signal to the DUT, whose watchdog output was monitored via an oscilloscope. The power supply was monitored to provide indication of latchup.VI. TEST SOFTWAREThe 8051 test software concept is straightforward. It was designed to be a modular series of small test programs each exercising a specific part of the DUT. Since each test was stand alone, they were loaded independently of each other for execution on the DUT. This ensured that only the desired portion of the 8051 DUT was exercised during the test and helped pinpoint location of errors that occur during testing. All test programs resided on the controller PC until loaded via the serial interface to the DUT computer. In this way, individual tests could have been modified at any time without the necessity of burning PROMs. Additional tests could have also been developed and added without impacting the overall test design. The only permanent code, which was resident on the DUT, was the boot code and serial code loader routines that established communications between the controller PC and the DUT.All test programs implemented:• An external Universal Asynchronous Receive and Transmit device (UART) for transmission of error information and communication to controller computer.• An external real-time clock for data error tag.•A watchdog routine designed to provide visual verification of 8051 health and restart test code if necessary.• A "foul-up" routine to reset program counter if it wanders out of code space.• An external telemetry data storage memory to provide backup of data in the event of an interruption in data transmission.The brief description of each of the software tests used is given below. It should be noted that for each test, the returned telemetry (including time tag) was sent to both the test controller and the telemetry memory, giving the highest reliability that all data is captured.Interrupt –This test used 4 of 6 available interrupt vectors (Serial, External, Timer0 Overflow, and Timer1 Overflow) to trigger routines that sequentially modified a value in the accumulator which was periodically compared to a known value. Unexpected values were transmitted with register information.Logic –This test performed a series of logic and math computations and provided three types of error identifications: 1) addition/subtraction, 2) logic and 3) multiplication/division. All miscompares of computations and expected results were transmitted with other relevant register information.Memory – This test loaded internal data memory at locations D:0x20 through D:0xff (or D:0x20 through D:0x080 for the CULPRiT DUT), indirectly, with an 0x55 pattern. Compares were performed continuously and miscompares were corrected while error information and register values were transmitted.Program Counter -The program counter was used to continuously fetch constants at various offsets in the code. Constants were compared with known values and miscompares were transmitted along with relevant register information. Registers – This test loaded each of four (0,1,2,3) banks of general-purpose registers with either 0xAA (for banks 0 and 2) or 0x55 (for banks 1 and 3). The pattern was alternated in order to test the Program Status Word (PSW) special function register, which controls general-purpose register bank selection. General-purpose register banks were then compared with their expected values. All miscompares were corrected and error information was transmitted.Special Function Registers (SFR) – This test used learned static values of 12 out 21 available SFRs and then constantly compared the learned value with the current one. Miscompares were reloaded with learned value and error information was transmitted.Stack – This test performed arithmetic by pushing and popping operands on the stack. Unexpected results were attributed to errors on the stack or to the stack pointer itself and were transmitted with relevant register information.VII. TEST METHODOLOGYThe DUT Computer booted by executing the instruction code located at address 0x0000. Initially, the device at this location was an EPROM previously loaded with "Boot/Serial Loader" code. This code initialized the DUT Computer and interface through a serial connection to the controlling computer, the "Test Controller". The DUT Computer downloaded Test Code and put it into Program Code RAM (located on the Main Board of the DUT Computer). It then activated a circuit which simultaneously performed two functions: held the DUT reset line active for some time (~10 ms); and, remapped the Test Code residing in the Program Code RAM to locate it to address 0x0000 (the EPROM will no longer be accessible in the DUT Computer's memory space). Upon awaking from the reset, the DUT computer again booted by executing the instruction code at address 0x0000, except this time that code was not be the Boot/Serial Loader code but the Test Code.The Test Control Computer always retained the ability to force the reset/remap function, regardless of the DUT Computer's functionality. Thus, if the test ran without a Single Event Functional Interrupt (SEFI) either the DUT Computer itselfor the Test Controller could have terminated the test and allowed the post-test functions to be executed. If a SEFI occurred, the Test Controller forced a reboot into Boot/Serial Loader code and then executed the post-test functions. During any test of the DUT, the DUT exercised a portion of its functionality (e.g., Register operations or Internal RAM check, or Timer operations) at the highest utilization possible, while making a minimal periodic report to the Test Control Computer to convey that the DUT Computer was still functional. If this reportceased, the Test Controller knew that a SEFI had occurred. This periodic data was called "telemetry". If the DUT encountered an error that was not interrupting the functionality (e.g., a data register miscompare) it sent a more lengthy report through the serial port describing that error, and continued with the test.VIII.DISCUSSIONA. Single Event LatchupThe main argument for why latchup is not an issue for the CULPRiT devices is that the operating voltage of 0.5 volts should be below the holding voltage required for latchup to occur. In addition to this, the cell library used also incorporates the heavy dual guard-barring scheme [4]. This scheme has been demonstrated multiple times to be very effective in rendering CMOS circuits completely immune to SEL up to test limits of 120 MeV-cm2/mg. This is true in circuits operating at 5, 3.3, and 2.5 Volts, as well as the 0.5 Volt CULPRiT circuits. In one case, a 5 Volt circuit fabricated on noncircuits wafers even exhibited such SEL immunity.B. Single Event UpsetThe primary structure of the storage unit used in the CULPRiT devices is the Single Event Resistant Topology (SERT) [5]. Given the SERT cell topology and a single upset node assumption, it is expected that the SERT cell will be completely immune to SEUs occurring internal to the memory cell itself. Obviously there are other things going on. The CULPRiT 8051 results reported here are quite similar to some resultsobtained with a CULPRiT CCSDS lossless compression chip (USES) [6]. The CULPRiT USES was synthesized using exactly the same tools and library as the CULPRiT 8051.With the CULPRiT USES, the SEU cross section data [7] was taken as a function of frequency at two LET values, 37.6 and 58.5 MeV-cm2/mg. In both cases the data fit well to a linear model where cross section is proportional to clock. In the LET 37.6 case, the zero frequency intercept occurred essentially at the zero cross section point, indicating that virtually all of these SEUs are captured SETs from the combinational logic. The LET 58.5 data indicated that the SET (frequency dependent) component is sitting on top of a "dc-bias" component –presumably a second upset mechanism is occurring internal to the SERT cells only at a second, higher LET threshold.The SET mitigation scheme used in the CULPRiT devices is based on the SERT cell's fault tolerant input property when redundant input data is provided to separate storage nodes. The idea is that the redundant input data is provided through a total duplication of combinational logic (referred to as “dual rail design”) such that a simple SET on one rail cannot produce an upset. Therefore, some other upset mechanism must be happening. It is possible that a single particle strike is placing an SET on both halves of the logic streams, allowing an SET to produce an upset. Care was taken to separate the dual sensitive nodes in the SERT cell layouts but the automated place-and-route of the combinatorial logic paths may have placed dual sensitive nodes close enough.At this point, the theory for the CULPRiT SEU response is that at about an LET of 20, the energy deposition is sufficiently wide enough (and in the right locations) to produce an SET in both halves of the combinatorial logic streams. Increasing LET allows for more regions to be sensitive to this effect, yielding a larger cross section. Further, the second SEU mechanism that starts at an LET of about 40-60 has to do with when the charge collection disturbance cloud gets large enough to effectively upset multiples of the redundant storage nodes within the SERT cell itself. In this 0.35 μm library, the node separation is several microns. However, since it takes less charge to upset a node operating at 0.5 Volts, with transistors having effective thresholds around 70 mV, this is likely the effect being observed. Also the fact that the per-bit memory upset cross section for the CULPRiT devices and the commercial technologies are approximately equal, as shown in Figure 9, indicates that the cell itself has become sensitive to upset.IX. SUMMARYA detailed comparison of the SEE sensitivity of a HBD technology (CULPRiT) utilizing the 8051 microcontroller as a test vehicle has been completed. This paper discusses the test methodology used and presents a comparison of the commercial versus CULPRiT technologies based on the data taken. The CULPRiT devices consistently show significantly higher threshold LETs and an immunity to latchup. In all but the memory test at the highest LETs, the cross section curves for all upset events is one to two orders of magnitude lower than the commercial devices. Additionally, theory is presented, based on the CULPRiT technology, that explain these results.This paper also demonstrates the test methodology for quantifying the level of hardness designed into a HBD technology. By using the HBD technology in a real-world device structure (i.e., not just a test chip), and comparing results to equivalent commercial devices, one can have confidence in the level of hardness that would be available from that HBD technology in any circuit application.ACKNOWLEDGEMENTSThe authors of this paper would like to acknowledge the sponsors of this work. These are the NASA Electronic Parts and Packaging Program (NEPP), NASA Flight Programs, and the Defense Threat Reduction Agency (DTRA).。
中英文翻译
中英文摘要The characteristics and the application of single chip microcomputer 1. A machine of basic constituteThe structure characteristic of a machine is a basic parts that will constitute the calculator to gather on a piece of crystal chip, constitute one set function special, a microcomputer of the integrity.The underneath synopsis introduce each constitute the part.(1)CPUThe CPU CPU within a machine is similar to in general use microprocessor basically, constituting from the operation machine and controller, increasing to establish the processing function of" face to the control" moreover, if a processing, check the form, variety to jump to turn, multiply by the division operation, the appearance examination and break off to handle the etc., strengthen the solid hour.(2)Saving machineThe saving space of a machine contain two kinds of basic structure.A kind of is the Princeton structure( Princeton), different from a saving machine space of the data suitable for use, namely ROM and RAM addresses assign in a space together address of procedure.When the CPU interview save the machine, an address to should only one of a saving unit, can be a ROM, can also be a RAM, use the interview instruction of the of the same kind.Another is a kind of is to separate saving machine of the procedure saving machine and datas clearly, look for the structure of the address respectively, be called Harvard( Harvard) structure.The CPU visits the different and saving machine space with the different instruction.Because an application with actual machine in the characteristics of" face to the control", need the saving machine of bigger procedure generally.Currently, a machine that includes the series of C51 MCS-51 and 80 all adopts the structure of Harvard that saving machine of the procedure saving machine and datas clearly separate.(3)Proceed together the I/ OA machine for the sake of the function of the outstanding control, provided the quantity many, the function is strong and uses vivid abreast I/ O.Not only can vividly the choice importation or output, but also can be the total line of system or control the signal line on the usage, thus for expand the exterior saving the machine and I/ Os connected to provide the convenience.(4)The string goes the I/ O8 machines of the high speed can provide a workses string to go the I/ O, as a result can carry on the string to go the correspondence with some terminal equipmentses, or connect with each other with some machines of special function piece.(5)Settle machine/ count the machineIn actual application, a machine usually need to be settle by the square, or need outward an affairs carries on count, as a result at a machine the inner part established settle machine/ count the machine electric circuit, pass the interruption, carry out to settle/ the auto processing that count.2. The characteristics of a machineA structure with special machine come to a decision it have as follows characteristics.(1)High gather degree, high and dependableA machine gather each function parts on a piece of crystal chip, gather the degree is very high, the physical volume nature also is minimum.The chip is to press industry to measure to control the environment request design of, the internal cloth line is very short, better than general in general use CPU of its anti- industry noise function.A machine procedure instruction, constant and form etc. is solid to turn in the ROM the not easy breakage, many signal passages are all in a chip, the past credibility is high.(2)Control the function strongFor satisfying the condition to the control request of the object, the instruction system of a machine very all have abundantly:The branch transfers the ability, I/ O oscular logic operation and a processing abilities, being applicable to the specialized control function very much.(3)The low electric voltage, low 功consumeFor satisfying the extensive usage in then the hold type system, the work electric voltage in many machines is the 1.8 V ～3.6 Vs only, but work the electric current is only for several hundred tiny Annes.(4)The excellent function price compareThe function of a machine is very high.For the sake of the exaltation speed and the movement efficiencies, a machine has already started use the RISC flowing water line and DSP etc. techniques.A machine looks for the restrict that the address ability have already also broken the 64 KBs, have of have already can attain the 1 MB and 16 MBses, the capacity of ROM in the slice can amount to the 62 MBs, the capacity of RAM then can amount to the 2 MBs.Because of the extensive usage of a machine, as a result sell the quantity biggest, the business of each archduke department the competition even make its price very cheap, its function price compare very high.3. The application of a machineBecause a machine function flies to develop soon, its application is increasingly extensive, have already outrun the realm of the calculator science far and far.Small arrive the toy, credit card, big arrive the aerospace machine, robot, from carry out the data to collect, process control, misty control etc. the intelligence system arrives the mankind's daily life, all canning not get away from a machine everywhere.It is mainly the applied realm is as follows.(1)At measure to control the application in the systemA machine cans used for constituting various industry controls system and control the system, data to collect system etc. from the orientation.For example, the boiler on the industry control, electrical engineering control, the vehicle examine automatic control of system, floodgate, count to control the tool machine and the radar on the military, guided missile system etc.s.(2)The application that is in intelligence turn the instrument appearanceA machine apply in urge the instrument appearance to turn toward numeral in the instrument appearance equipments, the intelligence turn, multi-function turn and synthesize toturn etc. the direction development.The software plait the distance technique of a machine makes measure for long time the processing that the error margin in the appearance correction, line turn etc. the hard nut to crack solve problems with the greatest ease.(3)In machine give or get an electric shock integral whole turn of applicationA machine combines with the traditional machine product the machine product structure of make the tradition to simplify, the control alignment intelligence turn, constituting the machine of the new generation electricity the integral whole turns the product.This is the direction of the machine industry development.(4)Connect the application in in the intelligenceThe calculator system, the especially more large industry measures to control to adopt a machine to carry on connecting the oscular control management in the system, a machine and hosts work abreast, can raise the movement speed of the system consumedly.For example, in large data collect system, use a machine to the mold/ number the conversion connects to carry on the control not only can raise to collect the speed, also can with logarithms according to carry on preparing the processing.Revise such as the numerical wave , error margin, the line turns to handle etc.单片机的特点和应用1．单片机的基本组成单片机的结构特征是将组成计算机的基本部件集成在一块晶体芯片上，构成一台功能独特的、完整的单片微型计算机。
51单片机英文及其翻译
英文翻译原文：51 Microcontroller IntroductionMicrocontrollers basic component is a central processing unit (CPU in the computing device and controller), read-only memory (usually expressed as a ROM), read-write memory (also known as Random Access Memory MRAM is usually expressed as a RAM) , input / output port (also divided into parallel port and serial port, expressed as I / O port), and so composed. In fact there is also a clock circuit microcontroller, so that during operation and control of the microcontroller, can rhythmic manner. In addition, there are so-called "break system", the system is a "janitor" role, when the microcontroller control object parameters that need to be intervention to reach a particular state, can after this "janitor" communicated to the CPU, so that CPU priorities of the external events to take appropriate counter-measures.Microcontrollers are used in a multitude of commercial applications such as modems, motor-control systems, air conditioner control systems, automotive engine and among others. The high processing speed and enhanced peripheral set of these microcontrollers make them suitable for such high-speed event-based applications. However, these critical application domains also require that these microcontrollers are highly reliable. The high reliability and low market risks can be ensured by a robust testing process and a proper tools environment for the validation of these microcontrollers both at the component and at the system level. Intel Platform Engineering department developed an object-oriented multi-threaded test environment for the validation of its AT89C51 automotive microcontrollers. The goals of this environment was not only to provide a robust testing environment for the AT89C51 automotive microcontrollers, but to develop an environment which can be easily extended and reused for the validation of several other future microcontrollers. The environment was developed in conjunction with Microsoft Foundation Classes (AT89C51). The paper describes the design and mechanism of this test environment, its interactions with various hardware/software environmental components, and how to use AT89C51.Are 8-bit microcontroller early or 4 bits. One of the most successful is the INTEL 8031, for a simple, reliable and good performance was a lot of praise. Then developed in 8031 out of MCS51 MCU Systems. SCM systems based on this system until now is still widely used. With the increased requirements of industrial control field, began a 16-bit microcontroller, but not ideal because the cost has not been very widely used. After 90 years with the great development of consumer electronics, microcontroller technology has been a huge increase. With INTEL i960 series, especially the later series of widely used ARM, 32-bit microcontroller quickly replace high-end 16-bit MCU status and enter the mainstream market. The traditional 8-bit microcontroller performance have been therapid increase capacity increase compared to 80 the number of times. Currently, high-end 32-bit microcontroller clocked over 300MHz, the performance catching the mid-90s dedicated processor, while the average model prices fall to one U.S. dollar, the most high-end model is only 10 dollars. Modern SCM systems are no longer only in the development and use of bare metal environment, a large number of proprietary embedded operating system is widely used in the full range of SCM. The handheld computers and cell phones as the core processing of high-end microcontroller can even use a dedicated Windows and Linux operating systems.SCM relies on the program, and can be modified. Through different procedures to achieve different functions, in particular special unique features, this is another device much effort needs to be done, some are great efforts are very difficult to achieve. A not very complex functions if the 50's with the United States developed 74 series, or the 60's CD4000 series of these pure hardware buttoned, then the circuit must be a large PCB board! But if the United States if the 70's with a series of successful SCM market, the result will be a drastic change! Just because you are prepared by microcomputer programs can achieve high intelligence, high efficiency and high reliability!IntroductionThe 8-bit AT89C51 CHMOS microcontrollers are designed to handle high-speed calculations and fast input/output operations. MCS 51 microcontrollers are typically used for high-speed event control systems. Commercial applications include modems, motor-control systems, printers, photocopiers, air conditioner control systems, disk drives, and medical instruments. The automotive industry use MCS 51 microcontrollers in engine-control systems, airbags, suspension systems, and antilock braking systems (ABS). The AT89C51 is especially well suited to applications that benefit from its processing speed and enhanced on-chip peripheral functions set, such as automotive power-train control, vehicle dynamic suspension, antilock braking, and stability control applications. Because of these critical applications, the market requires a reliable cost-effective controller with a low interrupt latency response, ability to service the high number of time and event driven integrated peripherals needed in real time applications, and a CPU with above average processing power in a single package. The financial and legal risk of having devices that operate unpredictably is very high. Once in the market, particularly in mission critical applications such as an autopilot or anti-lock braking system, mistakes are financiallyProhibitive. Redesign costs can run as high as a $500K, much more if the fix means back annotating it across a product family that share the same core and/or peripheral design flaw. In addition, field replacements of components are extremely expensive, as the devices are typically sealed in modules with a total value several times that of the component. To mitigate these problems, it is essential that comprehensive testing of the controllers be carried out at both the component level and system level under worst case environmental and voltage conditions. This complete and thorough validation necessitates not only a well-defined process but also a proper environment and tools to facilitate and execute the mission successfully.Intel Chandler Platform Engineering group provides postSilicon system validation (SV) of various micro-controllers and processors. The system validation process can be broken into three major parts. The type of the device and its application requirements determine which types of testing are performed on the device.The AT89C51 provides the following standard features: 4Kbytes of flash, 128 bytes of RAM, 32 I/O lines, two 16-bittimer/counters, five vector two-level interrupt architecture, a full duple ser -ail port, on-chip oscillator and clock circuitry. In addition, the AT89C51 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt sys -tem to continue functioning. The Power-down Mode saves the RAM contents but freezes the social -labor disabling all other chip functions until the next hardware reset.Pin DescriptionVCC Supply voltage.GND Ground.Port 0Port 0 is an 8-bit open-drain bi-directional I/O port. As an output port, each pin can sink eight TTL inputs. When 1s are written to port 0 pins, the pins can be used as high impedance inputs.Port 0 may also be configured to be the multiplexed lowered address/data bus during accesses to external program and data memory. In this mode P0 has internal pull-ups’.Port 0 also receives the code bytes during Flash programming, and outputs the code bytes during program verification. External pull-ups are required during program verification.Port 1Port 1 is an 8-bit bi-directional I/O port with internal pullups.The Port 1 output buffers can sink/so -urge four TTL inputs. When 1s are written to Port 1 pins they are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 1 pins that are externally being pulled low will source current (IIL) because of the internal pull-ups.Port 1 also receives the low-order address bytes during Flash programming and verification.Port 2Port 2 is an 8-bit bi-directional I/O port with internal pullups.The Port 2 output buffers can sink/source four TTL inputs. When 1s are written to Port 2 pins they are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 2 pins that are externally being pulled low will source current (IIL) because of the internal pull-ups.Port 2 emits the high-order address byte during fetches from external program memory and during accesses to Port 2 pins that are externally being pulled low will source current (IIL) because of the internal pull-ups.Port 2 emits the high-order address byte during fetches from external program memory and during accesses to external data memory that uses 16-bit addresses (MOVX @DPTR). In this application, it uses strong internal pull-ups when emitting 1s. During accesses to external data memory that uses 8-bit addresses (MOVX @ RI); Port 2 emits the contents of the P2 Special Function Register.Port 2 also receives the high-order address bits and some control signals during Flash programming and verification.Port 3Port 3 is an 8-bit bi-directional I/O port with internal pullups.The Port 3 output buffers can sink/soul -race four TTL inputs. When 1s are written to Port 3 pins they are pulled high by the internal pull-ups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current (IIL) because of the pull-ups.RSTReset input. A high on this pin for two machine cycles while the oscillator is running resets the device.ALE/PROGAddress Latch Enable output pulse for latching the low byte of the address during accesses to external memory.This pin is also the program pulse input (PROG) during Flash programming.In normal operation ALE is emitted at a constant rate of 1/6 the oscillator frequency, and may be used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped dui -nag each access to external DataMemory.If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set, ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high. Setting the ALE-disable bit has no effect if the microcontroller is in external execution mode.PSENProgram Store Enable is the read strobe to external program memory. When the AT89C51 is executing code from external program memory, PSEN is activated twice each machine cycle, except that two PSEN activations are skipped during each access to external data memory.EA/VPPExternal Access Enable. EA must be strapped to GND in order to enable the device to fetch code from external program memory locations starting at 0000H up to FFFFH. Note, however, that if lock bit 1 is programmed, EA will be internally latched on reset. A should be strapped to VCC for internal program executions. This pin also receives the 12-volt programming enable voltage (VPP) during Flash programming, for parts that require 12-volt VPP.The AT89C51 code memory array is programmed byte-by byte in either programming mode. To program any nonblank byte in the on-chip Flash Memory, the entire memory must be erased using the Chip Erase Mode.Data Polling: The AT89C51 features Data Polling to indicate the end of a write cycle. During a write cycle, an attempted read of the last byte written will result in the complement of the written datum on PO.7. Once the write cycle has been completed, true data are valid on all outputs, andThe next cycle may begin. Data Polling may begin any time after a write cycle has been initiated.Ready/Busy: The progress of byte programming can also be monitored by the RDY/BSY output signal. P3.4 is pulled low after ALE goes high during programming to indicate BUSY. P3.4 is pulled high again when programming is done to indicate READY.Program Verify: If lock bits LB1 and LB2 have not been programmed, the programmed code data can be read back via the address and data lines for verification. The lock bits cannot be verified directly. Verification of the lock bits is achieved byobserving that their features are enabled.A microcomputer interface converts information between two forms. Outside the microcomputer the information handled by an electronic system exists as a physical signal, but within the program, it is represented numerically. The function of any interface can be broken down into a number of operations which modify the data in some way, so that the process of conversion between the external and internal forms is carried out in a number of steps.An analog-to-digital converter (ADC) is used to convert a continuously variable signal to a corresponding digital form which can take any one of a fixed number of possible binary values. If the output of the transducer does not vary continuously, no ADC is necessary. In this case the signal conditioning section must convert the incoming signal to a form which can be connected directly to the next part of the interface, the input/output section of the microcomputer itself.Output interfaces take a similar form, the obvious difference being that here the flow of information is in the opposite direction; it is passed from the program to the outside world. In this case the program may call an output subroutine which supervises the operation of the interface and performs the scaling numbers which may be needed for a digital-to-analog converter (DAC). This subroutine passes information in turn to an output device which produces a corresponding electrical signal, which could be converted into analog form using a DAC. Finally the signal is conditioned (usually amplified) to a form suitable for operating an actuator.The signals used within microcomputer circuits are almost always too small to be connected directly to the “outside world” and some kind of interface must be used to translate them to a more appropriate form. The design of section of interface circuits is one of the most important tasks facing the engineer wishing to apply microcomputers. We have seen that in microcomputers information is represented as discrete patterns of bits; this digital form is most useful when the microcomputer is to be connected to equipment which can only be switched on or off, where each bit might represent the state of a switch or actuator.To solve real-world problems, a microcontroller must have more than just a CPU, a program, and a data memory. In addition, it must contain hardware allowing the CPU to access information from the outside world. Once the CPU gathers information and processes the data, it must also be able to effect change on some portion of the outside world. T hese hardware devices, called peripherals, are the CPU’s window t o the outside.The most basic form of peripheral available on microcontrollers is the general purpose I70 port. Each of the I/O pins can be used as either an input or an output. The function of each pin is determined by setting or clearing corresponding bits in a corresponding data direction register during the initialization stage of a program. Each output pin may be driven to either a logic one or a logic zero by using CPU instructions to pin may be viewed (or read.) by the CPU using program instructions.Some type of serial unit is included on microcontrollers to allow the CPU to communicate bit-serially with external devices. Using a bit serial format instead of bit-parallel format requires fewer I/O pins to perform the communication function, which makes it less expensive, but slower. Serial transmissions are performed either synchronously or asynchronously.Its applicationsSCM is widely used in instruments and meters, household appliances, medical equipment, aerospace, specialized equipment, intelligent management and process control fields, roughly divided into the following several areas:SCM has a small size, low power consumption, controlling function, expansion flexibility, the advantages of miniaturization and ease of use, widely used instrument, combining different types of sensors can be realized, such as voltage, power, frequency, humidity, temperature, flow, speed, thickness, angle, length, hardness, elemental, physical pressure measurement. SCM makes use of digital instruments, intelligence, miniaturization, and functionality than the use of more powerful electronic or digital circuits. Such as precision measuring equipment (power meter, oscilloscope, various analytical instrument).译文：51单片机简介单片机的基本组成是由中央处理器（即CPU中的运算器和控制器）、只读存贮器（通常表示为ROM）、读写存贮器（又称随机存贮器通常表示为RAM）、输入/输出口（又分为并行口和串行口，表示为I/O口）等等组成。
单片机指令英文全称
51单片机汇编指令集（指令集带英文翻译）一、数据传送类指令（7种助记符）MOV（英文为Move）：对内部数据寄存器RAM和特殊功能寄存器SFR的数据进行传送；MOVC（Move Code）读取程序存储器数据表格的数据传送；MOVX(Move External RAM)对外部RAM的数据传送；XCH(Exchange)字节交换；XCHD(Exchange low-order Digit)低半字节交换；PUSH(Push onto Stack)入栈；POP (Pop from Stack)出栈；二、算术运算类指令（8种助记符）ADD(Addition) 加法；ADDC(Add with Carry) 带进位加法；SUBB(Subtract with Borrow) 带借位减法；DA(Decimal Adjust) 十进制调整；INC(Increment) 加1；DEC(Decrement) 减1；MUL(Multiplication、Multiply) 乘法；DIV(Division、Divide) 除法；三、逻辑运算类指令（10种助记符）ANL(AND Logic) 逻辑与；ORL(OR Logic) 逻辑或；XRL(Exclusive-OR Logic) 逻辑异或；CLR(Clear) 清零；CPL(Complement) 取反；RL(Rotate left) 循环左移；RLC(Rotate Left throught the Carry flag) 带进位循环左移；RR(Rotate Right) 循环右移；RRC(Rotate Right throught the Carry flag) 带进位循环右移；SWAP (Swap)低4位与高4位交换；四、控制转移类指令（17种助记符）ACALL（Absolute subroutine Call）子程序绝对调用；LCALL（Long subroutine Call）子程序长调用；RET（Return from subroutine）子程序返回；RETI（Return from Interruption）中断返回；SJMP（Short Jump）短转移；AJMP（Absolute Jump）绝对转移；LJMP（Long Jump）长转移；CJNE (Compare Jump if Not Equal)比较不相等则转移；DJNZ (Decrement Jump if Not Zero)减１后不为０则转移；JZ (Jump if Zero)结果为０则转移；JNZ (Jump if Not Zero) 结果不为０则转移；JC (Jump if the Carry flag is set)有进位则转移；JNC (Jump if Not Carry)无进位则转移；JB (Jump if the Bit is set)位为１则转移；JNB (Jump if the Bit is Not set) 位为０则转移；JBC(Jump if the Bit is set and Clear the bit) 位为１则转移，并清除该位；NOP (No Operation)空操作；五、位操作指令（1种助记符）CLR 位清零；SETB(Set Bit)位置１。
单片机
1 系统硬件介绍本设计通过单片机实现喇叭播放音乐和LCD液晶显示文字、图片、动画，并通过键盘进行控制操作，实现功能的选择。
单片机使用AT89C55WD芯片，容有20K字节可编程闪烁存储器，能存放做够的程序容量。
LCD使用128*64液晶屏，通过控制驱动器，能显示图片和文字。
另外使用I2C总线扩展，I2C总线是一种用于IC器件之间连接的二线制总线。
它通过SDA（串行数据线）及SCL（串行时钟先）两根线在连到总线上的器件之间传送信息，并根据地址识别每个器件，不管是单片机、存储器、LCD驱动器还是键盘接口。
1.1 单片机简介所谓单片机，通俗的来讲，就是把中央处理器CPU（Central Processing Unit），存储器（memory），定时器，I/O（Input/Output）接口电路等一些计算机的主要功能部件集成在一块集成电路芯片上的微型计算机。
单片机又称为“微控制器MCU”。
中文“单片机”的称呼是由英文名称“Single Chip Microcomputer”直接翻译而来的。
顾名思义，这种计算机的最小系统只用了一片集成电路，即可进行简单运算和控制。
因为它体积小，通常都藏在被控机械的“肚子”里。
它在整个装置中，起着有如人类头脑的作用，它出了毛病，整个装置就瘫痪了。
现在，这种单片机的使用领域已十分广泛，如智能仪表、实时工控、通讯设备、导航系统、家用电器等。
各种产品一旦用上了单片机，就能起到使产品升级换代的功效，常在产品名称前冠以形容词——“智能微电脑型”，如智能型热水器等。
本设计用到的单片机是AT89C55WD，下面就以AT89C55WD为例，结合本设计所用到的内容，简单介绍一下单片机的基础知识。
1.1.1 AT89C55WD简介AT89C55WD是一个低电压，高性能CMOS 8 位单片机，片内含有20KB 的可重写快速闪存存储器和只读程序和256 bytes的随机存取数据存储器（RAM），器件采用ATMEL公司的高密度、非易失性存储技术生产，兼容标准MCS-51指令系统，引脚兼容工业标准芯片，采用通用编程方式，片内置通用8位中央处理器和Flash存储单元，内置功能强大的微处理器的AT89C55WD可为您提供许多高性价比的解决方案，适用于多数嵌入式应用系统。
单片机英语单词翻译
单片机英语单词Ch1 Hardware System of Single Chip MicrocomputerPC （Personal Computer）机中央处理单元（CPU，Central Processing Unit）输入输出（I/O，Input/Output）随机存取存储器（RAM，Random Access Memory）专用寄存器（Special Function Register）程序计数器（PC，Program Counter）程序状态字（PSW，Program Status Word）堆栈指针（SP，Stack Pointer）时钟电路（Clock circuit）复位电路（Reset circuit）电压（V oltage）地线（Ground）Ch2 The Exploitation of Single Chip Microcomputer仿真器（emulator）工具软件（facility and software）电源（power supply）通信电缆（Communication Cable）运行（Execute）、仿真插座（Emulator socket ）单步运行（Step）、在线仿真功能(On-line emulator function)跟踪运行（Trace）在线仿真器（In Circuit Emulator，简称ICE）断点运行（Breakpoint）Ch3 Instruction System of the MCS-51MCS（Micro Computer System）指令系统（Instruction System）寻址方式（Look for address mode）直接（Directness）立即（Immediately）间接（Indirectly）变址（Change address）相对（Comparatively）数据传送指令（Data Move Instruction）算术运算指令（Arithmetic Operation Instruction）逻辑运算指令（Logic Operation Instruction）控制转移指令（Control Transfer Instruction）位操作指令（Bit Operation Instruction）BCD码，（Binary Coded Decimal）加法（ADD，Addition）减法（SUB，Subtration）乘法（MUL，Multiplication）除法（DIV，Divition）数据调整（DA，Data Adjust）加大（INC，Increase）减少（DEC，Decrease）Ch4 The Program Design of Assembly Language机器语言（Machine Language）汇编语言（Assembly Language）高级语言（High-Level Language）简单程序（simple program）分支程序（branch program）循环程序（circle or loop program）子程序（Subprogram）Ch5 Time and Interrupt中断（Interrupt）计数器（counter）定时器（Timer）定时器工作方式寄存器（TMOD，Timer mode）定时器控制寄存器（TCON，Timer control）启动定时器（TR，Timer Run）定时器满标志位（TF，Time Full）中断允许寄存器（IE，Interrupt Enable）中断优先权寄存器（Interrupt Priority）交通指挥灯traffic light倒计时countdown片内RAM on-chip Data RAMCh6 The Expanded System of Single Chip Microcomputer静态RAM（SRAM，Static Random Access Memory ）动态RAM DRAM，Dynamic Random Access Memory）快擦写型存储器（Flash Memory）只读存储器（ROM，Read-only Memory）随机存取存储器（RAM，Random AccessMemor）Ch7 The Interface T echnology of Single Micro Computer发光二极管（LED，Light Emitting Diode）液晶显示器（LCD，Liquid Crystal Display）模数转换器（A/D Converter，Analogy/Digital Converter）数模转换器（D/A Converter，Digital/Analogy Converter）打印机（Printer）Ch8 Serial Port Communicate T echnology串行口（Serial Port）并行口（Parallel Port）外部external通信（Communication）字符帧（Character frame）波特率（Baud Rate）异步通信（Asynchronous Communication）同步通信（Synchronous Communication）通用异步收发器（UART，Universal Asynchronous Receiver Transmitter）通用同步收发器（USRT，Universal Synchronous Receiver/Transmitter）全双工（FD/FDX，Full Duplex）半双工（Semiduplex）单工（SPX，Simplex）。
单片机缩写的英文全称及中文名称(二)
单片机缩写的英文全称及中文名称（二）引言概述：在单片机应用领域中，经常会遇到各种缩写的英文全称及相应的中文名称。
这些缩写在电子行业中非常常见，对于从事单片机开发和研究的人来说，了解这些缩写的全称和中文名称是非常重要的。
本文将介绍一些常见的单片机缩写的英文全称及中文名称，供读者参考。
正文：一、指令缩写1. ALU：Arithmetic Logic Unit（算术逻辑单元），用于执行各种算术和逻辑操作的核心部件。
2. PC：Program Counter（程序计数器），用于存储下一条指令的地址。
3. IR：Instruction Register（指令寄存器），用于存储当前执行的指令。
4. SP：Stack Pointer（栈指针），用于指示栈的顶部地址。
5. RAM：Random Access Memory（随机访问存储器），用于存储数据和程序。
二、外设缩写1. GPIO：General Purpose Input Output（通用输入输出），用于将单片机与外部设备进行数据交互。
2. USART：Universal Synchronous/Asynchronous Receiver Transmitter（通用同步/异步收发器），用于串行通信。
3. I2C：Inter-Integrated Circuit（集成电路之间的串行通信接口），用于连接外部设备。
4. SPI：Serial Peripheral Interface（串行外设接口），用于连接多个外围设备。
5. ADC：Analog to Digital Converter（模数转换器），用于将模拟信号转换为数字信号。
三、芯片缩写1. MCU：Microcontroller Unit（微控制器单元），集成了处理器核心、存储器和外设接口等功能。
2. DSP：Digital Signal Processor（数字信号处理器），专门用于数字信号处理的芯片。
基于单片机的外文翻译、中英文翻译
英文原文DescriptionThe at89s52 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash Programmable and Erasable Read Only Memory (PEROM) and 128 bytes RAM. The device is manufactured using Atmel’s high density nonvolatile memory technology and is compatible with the industry standard MCS-51™ instruction set and pinout. The chip combines a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel at89s52 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications.Features:• Compatible with MCS-51™ Products• 4K Bytes of In-System Reprogrammable Flash Memory• Endurance: 1,000 Write/Erase Cycles• Fully Static Operation: 0 Hz to 24 MHz• Three-Level Program Memory Lock• 128 x 8-Bit Internal RAM• 32 Programmable I/O Lines• Two 16-Bit Timer/Counters• Six Interrupt Sources• Programmable Serial Channel• Low Power Idle and Power Down ModesThe at89s52 provides the following standard features: 4K bytes of Flash, 128 bytes of RAM, 32 I/O lines, two 16-bit timer/counters, a five vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator and clock circuitry. In addition, the at89s52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The Power Down Mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset. Pin Description:VCC Supply voltage.GND Ground.Port 0Port 0 is an 8-bit open drain bidirectional I/O port. As an output port each pin can sink eight TTL inputs. When is are written to port 0 pins, the pins can be used as high impedance inputs.Port 0 may also be configured to be the multiplexed loworder address/data bus during accesses to external program and data memory. In this mode P0 has internal pullups.Port 0 also receives the code bytes during Flash programming, and outputs theduring accesses to external memory. This pin is also the program pulse input (PROG) during Flash programming.In normal operation ALE is emitted at a constant rate of 1/6 the oscillator frequency, and may be used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped during each access to external Data Memory.If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set, ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high. Setting the ALE-disable bit has no effect if the microcontroller is in external execution mode.PSENProgram Store Enable is the read strobe to external program memory.When the at89s52 is executing code from external program memory, PSEN is activated twice each machine cycle, except that two PSEN activations are skipped during each access to external data memory.EA/VPPExternal Access Enable. EA must be strapped to GND in order to enable the device to fetch code from external program memory locations starting at 0000H up to FFFFH. Note, however, that if lock bit 1 is programmed, EA will be internally latched on reset.EA should be strapped to VCC for internal program executions.This pin also receives the 12-volt programming enable voltage(VPP) during Flash programming, for parts that require 12-volt VPP.XTAL1Input to the inverting oscillator amplifier and input to the internal clock operating circuit.XTAL2Output from the inverting oscillator amplifier.Oscillator CharacteristicsXTAL1 and XTAL2 are the input and output, respectively, of an inverting amplifier which can be configured for use as an on-chip oscillator, as shown in Figure 1. Either a quartz crystal or ceramic resonator may be used. To drive the device from an external clock source, XTAL2 should be left unconnected while XTAL1 is driven as shown in Figure 2. There are no requirements on the duty cycle of the external clock signal, since the input to the internal clocking circuitry is through adivide-by-two flip-flop, but minimum and maximum voltage high and low time specifications must be observed.Idle ModeIn idle mode, the CPU puts itself to sleep while all the onchip peripherals remain active. The mode is invoked by software. The content of the on-chip RAM and all the special functions registers remain unchanged during this mode. The idle mode can be terminated by any enabled interrupt or by a hardware reset.It should be noted that when idle is terminated by a hard ware reset, the device normally resumes program execution, from where it left off, up to two machine cycles before the internal reset algorithm takes control. On-chip hardware inhibits access toport pin or to external memory.RDY/BSY output signal. P3.4 is pulled low after ALE goes high during programming to indicate BUSY. P3.4 is pulled high again when programming is done to indicate READY.Program Verify: If lock bits LB1 and LB2 have not been programmed, the programmed code data can be read back via the address and data lines for verification. The lock bits cannot be verified directly. Verification of the lock bits is achieved by observing that their features are enabled.Chip Erase: T he entire Flash Programmable and Erasable Read Only Memory array is erased electrically by using the proper combination of control signals and by holding ALE/PROG low for 10 ms. The code array is written with all “1”s. The chip erase operation must be executed before the code memory can be re-programmed.Reading the Signature Bytes: The signature bytes are read by the same procedure as a normal verification of locations 030H, 031H, and 032H, except thatP3.6 and P3.7 must be pulled to a logic low. The values returned are as follows.(030H) = 1EH indicates manufactured by Atmel(031H) = 51H indicates 89C51(032H) = FFH indicates 12V programming(032H) = 05H indicates 5V programmingProgramming InterfaceEvery code byte in the Flash array can be written and the entire array can be erased by using the appropriate combination of control signals. The write operation cycle is selftimed and once initiated, will automatically time itself to completion.中文翻译描述at89s52是美国ATMEL公司生产的低电压，高性能CMOS8位单片机，片内含4Kbytes的快速可擦写的只读程序存储器（PEROM）和128 bytes 的随机存取数据存储器（RAM），器件采用ATMEL公司的高密度、非易失性存储技术生产，兼容标准MCS-51产品指令系统，片内置通用8位中央处理器（CPU）和flish存储单元，功能强大at89s52单片机可为您提供许多高性价比的应用场合，可灵活应用于各种控制领域。
单片机89C52中英文对照翻译(经典版)
AT89C52 internal structure analysis DescriptionThe AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8Kbytes of in-system programmable Flash memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout. The on-chip Flash allows the programmemory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with in-system programmable Flash ona monolithic chip, the Atmel AT89S52 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications. The AT89S52 provides the following standard features: 8K bytes of Flash, 256 bytes of RAM, 32 I/O lines, Watchdog timer, two data pointers, three 16-bit timer/counters, a six-vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator,and clock circuitry. In addition, the AT89S52 is designed with static logic for operationdown to zero frequency and supports two software selectable power saving modes.The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, andinterrupt system to continue functioning. The Power-down mode saves the RAM contentsbut freezes the oscillator, disabling all other chip functions until the next interruptor hardware reset.Pin DescriptionVCCSupply voltage.GNDGround.Port 0Port 0 is an 8-bit open drain bidirectional I/O port. As anoutput port, eachpin can sink eight TTL inputs. When 1sare written to port 0 pins, the pins can be used as highimpedanceinputs.Port 0 can also be configured to be the multiplexed loworder address/data bus during accesses to external program and data memory. In this mode, P0 has internal pullups.Port 0 also receives the code bytes during Flash programming and outputs the code bytes during program verification.External pullups are required during program verification.Port 1Port 1 is an 8-bit bidirectional I/O port with internal pullups.The Port 1 output buffers can sink/source four TTL inputs.When 1s are written to Port 1 pins, they are pulled high by the internal pullups and can be used as inputs. As inputs,Port 1 pins that are externally being pulled low will source current (IIL) because of the internal pullups. In addition, P1.0 and P1.1 can be configured to be the timer/counter 2 external count input (P1.0/T2) and the timer/counter 2 trigger input (P1.1/T2EX), respectively, asshown in the following table.Port 1 also receives the low-order address bytes duringFlash programming and verification.Port 2Port 2 is an 8-bit bidirectional I/O port with internal pullups.The Port 2 output buffers can sink/source four TTL inputs.When 1s are written to Port 2 pins, they are pulled high bythe internal pullups and can be used as inputs. As inputs,Port 2 pins that are externally being pulled low will sourcecurrent (IIL) because of the internal pullups.Port 2 emits the high-order address byte during fetchesfrom external program memory and during accesses toexternal data memory that use 16-bit addresses (MOVX @DPTR). In this application, Port 2 uses strong internal pull-ups when emitting 1s. During accesses to external data memory that use 8-bit addresses (MOVX @ RI), Port 2 emits the contents of the P2 Special Function Register. Port 2 also receives the high-order address bits and some control signals during Flash programming and verification.Port 3Port 3 is an 8-bit bidirectional I/O port with internal pullups.The Port 3 output buffers can sink/source four TTL inputs.When 1s are written to Port 3pins, they are pulled high by the internal pullups and can be used as inputs. As inputs,Port 3 pins that are externally being pulled low will source current (IIL) because of the pullups.Port 3 also serves the functions of various special features of the AT89S52, as shown in the following table.Port 3 also receives some control signals for Flash programming and verification.RSTReset input. A high on this pin for two machine cycles while the oscillator is running resets the device. This pin drives High for 96 oscillator periods after the Watchdog times out.The DISRTO bit in SFR AUXR (address 8EH) can be used to disable this feature. In the default state of bit DISRTO,the RESET HIGH out feature is enabled.ALE/PROGAddress Latch Enable (ALE) is an output pulse for latching the low byte of the address during accesses to external memory. This pin is also the program pulse input (PROG) during Flash programming.In normal operation, ALE is emitted at a constant rate of 1/6 the oscillator frequency and may be used for external timing or clocking purposes. Note, however, that one ALE pulse is skipped during each access to external data memory.If desired, ALE operation can be disabled by setting bit 0 of SFR location 8EH. With the bit set, ALE is active only during a MOVX or MOVC instruction. Otherwise, the pin is weakly pulled high. Setting the ALE-disable bit has noeffect if the microcontroller is in external execution mode.PSENProgram Store Enable (PSEN) is the read strobe to externalprogram memory.When the AT89S52 is executing code from external program memory, PSEN is activated twice each machine cycle, except that two PSEN activations are skipped during each access to external data memory.EA/VPPExternal Access Enable. EA must be strapped to GND in order to enable the device to fetch code from external program memory locations starting at 0000Hup to FFFFH.Note, however, that if lock bit 1 is programmed, EA will be internally latched on reset.EA should be strapped to VCC for internal program executions.This pin also receives the 12-volt programming enable voltage (VPP) during Flash programming.XTAL1Input to the inverting oscillator amplifier and input to the internal clock operating circuit.XTAL2Output from the inverting oscillator amplifier.Special Function RegistersA map of the on-chip memory area called the Special FunctionRegister (SFR) space is shown in Table 1.Note that not all of the addresses are occupied, and unoccupied addresses may not be implemented on the chip.Read accesses to these addresses will in general return random data, and write accesses will have an indeterminate er software should not write 1s to these unlisted locations,since they may be used in future products to invokenew features. In that case, the reset or inactive values of the new bits will always be 0.Timer 2 Registers:Control and status bits are contained in registers T2CON (shown in Table 2) and T2MOD (shown in Table 3) for Timer 2. The register pair (RCAP2H, RCAP2L) are the Capture/Reload registers for Timer 2 in 16-bit capture mode or 16-bit auto-reload mode.Interrupt Registers:The individual interrupt enable bits are in the IE register. Two priorities can be set for each ofthe six interrupt sources in the IP register.Memory OrganizationMCS-51 devices have a separate address space for Program and Data Memory. Up to 64K bytes each of external Program and Data Memory can be addressed.Program MemoryIf the EA pin is connected to GND, all program fetches are directed toexternal memory.On the AT89S52, if EA is connected to VCC, program fetches to addresses 0000H through 1FFFH are directed to internal memory and fetches to addresses 2000H through FFFFH are to external memory.Data MemoryThe AT89S52 implements 256 bytes of on-chip RAM. The upper 128 bytes occupy a parallel address space to the Special Function Registers. This means that the upper 128 bytes have the same addresses as the SFR space but are physically separate from SFR space. When an instruction accesses an internal location aboveaddress 7FH, the address mode used in the instructionspecifies whether the CPU accesses the upper 128 bytes of RAM or the SFR space. Instructions which use direct addressing access of the SFR space.For example, the following direct addressing instruction accesses the SFR at location 0A0H (which is P2). MOV 0A0H, #dataInstructions that use indirect addressing access the upper 128 bytes of RAM. For example, the following indirect addressing instruction, where R0 cont ains 0A0H, accesses the data byte at address 0A0H, rather than P2 (whose address is 0A0H).MOV @R0, #dataNote that stack operations are examples of indirectaddressing, so the upper 128 bytes of data RAM are availableas stack space.Watchdog Timer(One-time Enabled with Reset-out)The WDT is intended as a recovery method in situationswhere the CPU may be subjected to software upsets. The WDT consists of a 13-bit counter and the Watchdog Timer Reset (WDTRST) SFR. The WDT is defaulted to disable from exiting reset. To enable the WDT, a user must write01EH and 0E1H in sequence to the WDTRST register (SFR location 0A6H). When the WDT is enabled, it will increment every machine cycle while the oscillator is running. The WDT timeout period is dependent on the external clock frequency. There is no way to disable the WDT except through reset (either hardware reset or WDT overflow reset). When WDT overflows, it will drive anoutput RESET HIGH pulse at the RST pin.Using the WDTTo enable the WDT, a user must write 01EH and 0E1H in sequence to the WDTRST register (SFR location 0A6H).When the WDT is enabled, the user needs to service it by writing 01EH and 0E1H to WDTRST to avoid a WDT overflow.The 13-bit counter overflows when it reaches 8191(1FFFH), and this will reset the device. When the WDT is enabled, it will increment every machine cycle while the oscillator is running. This means the user must reset the WDT at least every 8191 machine cycles. To reset the WDT the user must write 01EH and 0E1H to WDTRST. WDTRST is a write-only register. The WDT counter cannot be read or written. When WDT overflows, it will generate an output RESET pulse at the RST pin. The RESET pulse duration is 96xTOSC, where TOSC=1/FOSC. To make the best use of the WDT, it should be serviced in those sections of code that will periodically be executed within the time required to prevent a WDT reset.WDT During Power-down and IdleIn Power-down mode the oscillator stops, which means the WDT also stops. While in Power-down mode, the user does not need to service the WDT. There are two methods of exiting Power-down mode: by a hardware reset or via a level-activated external interrupt which is enabled prior toentering Power-down mode. When Power-down is exited with hardware reset, servicing the WDT should occur as it normally does whenever the AT89S52 is reset. Exiting Power-down with an interrupt is significantly different. The interrupt is held low long enough for the oscillator to stabilize. When the interrupt is brought high, the interrupt is serviced. To prevent the WDT from resetting the device while the interrupt pin is held low, the WDT is not started until the interrupt is pulled high. It is suggested that the WDT be reset during the interrupt service for the interrupt used to exit Power-down mode.To ensure that the WDT does not overflow within a few states of exiting Power-down, it is best to reset the WDT just before entering Power-down mode. Before going into the IDLE mode, the WDIDLE bit in SFR AUXR is used to determine whether theWDT continues tocount if enabled. The WDT keeps counting during IDLE (WDIDLE bit = 0) as the default state. To prevent the WDT from resetting the AT89S52 while in IDLE mode, the user should always set up a timer that will periodically exit IDLE, service the WDT, and reenter IDLE mode. With WDIDLE bit enabled, the WDT will stop to count in IDLE mode and resumes the count upon exit from IDLE.UARTThe UART in the AT89S52 operates the same way as the UART in the AT89C51 and AT89C52. For further information on the UART operation, refer to the ATMEL Web site (). From the home page, select ‘Products’,then ‘8051-Architecture Flash Microcontroller’, then‘Product Overview’.Timer 0 and 1Timer 0 and Timer 1 in the AT89S52 operate the same wayas Timer 0 and Timer 1 in the AT89C51 and AT89C52. Forfurther information on the timers’ operation, refer to the ATMEL Web site (). From the home page, select ‘Products’, then ‘8051-Architecture Flash Microcontroller’, then ‘Product Overview’.Timer 2Timer 2 is a 16-bit Timer/Counter that can operate as either a timer or an event counter. The type of operation is selected by bit C/T2 in the SFR T2CON (shown in Table 2). Timer 2 has three operating modes: capture, auto-reload (up or down counting), and baud rate generator. The modes are selected by bits in T2CON, as shown in Table 3. Timer 2 consists of two 8-bit registers, TH2 and TL2. In the Timer function, the TL2 register is incremented every machine cycle. Since a machine cycle consists of 12 oscillator periods, the count rate is 1/12 of the oscillator frequency.In the Counter function, the register is incremented in response to a 1-to-0 transition at its corresponding external input pin, T2. In this function, the external input is sampled during S5P2 of every machine cycle. When the samplesshow a high in one cycle and a low in the next cycle, thecount is incremented. The new count value appears in the register during S3P1 of the cycle following the one in which the transition was detected. Sin ce two machine cycles (24 oscillator periods) are required to recognize a 1-to-0 transition, the maximum count rate is 1/24 of the oscillator frequency.To ensure that a given level is sampled at least once before it changes, the level should be held for at leastone full machine cycle.Capture ModeIn the capture mode, two options are selected by bit EXEN2 in T2CON. If EXEN2 = 0, Timer 2 is a 16-bit timer or counter which upon overflow sets bit TF2 in T2CON.This bit can then be used to generate an interrupt. If EXEN2 = 1, Timer 2 performs the same operation, but a 1- to-0 transition at external input T2EX also causes the current value in TH2 and TL2 to be captured into RCAP2H and RCAP2L, respectively. In addition, the transition at T2EX causes bit EXF2 in T2CON to be set. The EXF2 bit, like TF2, can generate an interrupt. The capture mode is illustrated in Figure 5.Auto-reload (Up or Down Counter)Timer 2 can be programmed to count up or down when configured in its 16-bit auto-reload mode. This feature is invoked by the DCEN (Down Counter Enable) bit located in the SFR T2MOD (see Table 4). Upon reset, the DCEN bit is set to 0 so that timer 2 will default to count up. When DCEN is set, Timer 2 can count up or down, depending on the value of the T2EX pin.Figure 6 shows Timer 2 automatically counting up when DCEN=0. In this mode, two options are selected by bit EXEN2 in T2CON. If EXEN2 = 0, Timer 2 counts up to 0FFFFH and then sets the TF2 bit upon overflow. The overflow also causes the timer registers to be reloaded with the 16-bit value in RCAP2H and RCAP2L. The values in Timer in Capture ModeRCAP2H and RCAP2L are preset by software. If EXEN2 = 1, a 16-bit reload can be triggered either by an overflow or by a 1-to-0 transition at external input T2EX. This transition also sets the EXF2 bit. Both the TF2 and EXF2 bits can generate an interrupt if enabled. Setting the DCEN bit enables Timer 2 to count up or down,as shown in Figure 6. In thismode, the T2EX pin controls the direction of the count. A logic 1 at T2EX makes Timer 2 count up. The timer will overflow at 0FFFFH and set the TF2 bit. This overflow also causes the 16-bit value in RCAP2H and RCAP2L to be reloaded into the timer registers,TH2 and TL2, respectively. A logic 0 at T2EX makes Timer 2 count down. The timer underflows when TH2 and TL2 equal the values stored in RCAP2H and RCAP2L. The underflow sets the TF2 bit and causes 0FFFFH to be reloaded into the timer registers. The EXF2 bit toggles whenever Timer 2 overflows or underflows and can be used as a 17th bit of resolution. In this operating mode, EXF2 does not flag an interrupt.译文：89C52的内部结构分析功能特性描述AT89S52是一种低功耗、高性能CMOS8位微控制器，具有8K 在系统可编程Flash 存储器。
课程名英文翻译
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Mechanics当代国际关系Contemporary International Relationship当代国外社会思维评价Evaluation of Contemporary Foreign Social Thought当代文学Contemporary Literature当代文学专题Topics on Contemporary Literature当代西方哲学Contemporary Western Philosophy当代戏剧与电影Contemporary Drama&Films党史History of the Party导波光学Wave Guiding Optics等离子体工程Plasma Engineering低频电子线路Low Frequency Electric Circuit低温传热学Cryo Conduction低温固体物理Cryo Solid Physics低温技术原理与装置Fundamentals of Cryo Technology&Equipment低温技术中的微机原理Priciples of Microcomputer in Cryo Technology低温绝热Cryo Heat Insulation低温气体制冷机Cryo Gas Refrigerator低温热管Cryo Heat Tube低温设备Cryo Equipment低温生物冻干技术Biological Cryo Freezing Drying Technology低温实验技术Cryo Experimentation Technology低温物理导论Cryo Physic Concepts低温物理概论Cryo Physic Concepts低温物理概念Cryo Physic Concepts低温仪表及测试Cryo Meters&Measurement低温原理Cryo Fundamentals低温中的微机应用Application of Microcomputer in Cryo Technology低温装置Cryo Equipment低噪声电子电路Low-Noise Electric Circuit低噪声电子设计Low-Noise Electronic Designing低噪声放大与弱检Low-Noise Increasing&Decreasing低噪声与弱信号检测Detection of Low Noise&Weak Signals地理Geography第二次世界大战史History of World War II电测量技术Electric Measurement Technology电厂计算机控制系统Computer Control System in Power Plants电磁测量实验技术Electromagnetic Measurement Experiment&Technology 电磁场计算机Electromagnetic Field Computers电磁场理论Theory of Electromagnetic Fields电磁场数值计算Numerical Calculation of Electromagnetic Fields电磁场与电磁波Electromagnetic Fields&Magnetic Waves电磁场与微波技术Electromagnetic Fields&Micro-Wave Technology电磁场中的数值方法Numerical Methods in Electromagnetic Fields电磁场中的数值计算Numerical Calculation in Electromagnetic Fields电磁学Electromagnetics电动力学Electrodynamics电镀Plating电分析化学Electro-Analytical Chemistry电工测试技术基础Testing Technology of Electrical Engineering电工产品学Electrotechnical Products电工电子技术基础Electrical Technology&Electrical Engineering电工电子学Electronics in Electrical Engineering电工基础Fundamental Theory of Electrical Engineering电工基础理论Fundamental Theory of Electrical Engineering电工基础实验Basic Experiment in Electrical Engineering电工技术Electrotechnics电工技术基础Fundamentals of Electrotechnics电工实习Electrical Engineering Practice电工实验技术基础Experiment Technology of Electrical Engineering电工学Electrical Engineering电工与电机控制Electrical Engineering&Motor Control电弧电接触Electrical Arc Contact电弧焊及电渣焊Electric Arc Welding&Electroslag Welding电化学测试技术Electrochemical Measurement Technology电化学工程Electrochemical Engineering电化学工艺学Electrochemical Technology电机测试技术Motor Measuring Technology电机电磁场的分析与计算Analysis&Calculation of Electrical Motor&Electromagnetic Fields电机电器与供电Motor Elements and Power Supply电机课程设计Course Exercise in Electric Engine电机绕组理论Theory of Motor Winding电机绕组理论及应用Theory&Application of Motor Winding电机设计Design of Electrical Motor电机瞬变过程Electrical Motor Change Processes电机学Electrical Motor电机学及控制电机Electrical Machinery Control&Technology电机与拖动Electrical Machinery&Towage电机原理Principle of Electric Engine电机原理与拖动Principles of Electrical Machinery&Towage电机专题Lectures on Electric Engine电接触与电弧Electrical Contact&Electrical Arc电介质物理Dielectric Physics电镜Electronic Speculum电力电子电路Power Electronic Circuit电力电子电器Power Electronic Equipment电力电子器件Power Electronic Devices电力电子学Power Electronics电力工程Electrical Power Engineering电力生产技术Technology of Electrical Power Generation电力生产优化管理Optimal Management of Electrical Power Generation电力拖动基础Fundamentals for Electrical Towage电力拖动控制系统Electrical Towage Control Systems电力系统Power Systems电力系统电源最优化规划Optimal Planning of Power Source in a Power System 电力系统短路Power System Shortcuts电力系统分析Power System Analysis电力系统规划Power System Planning电力系统过电压Hyper-Voltage of Power Systems电力系统继电保护原理Power System Relay Protection电力系统经济分析Economical Analysis of Power Systems电力系统经济运行Economical Operation of Power Systems电力系统可靠性Power System Reliability电力系统可靠性分析Power System Reliability Analysis电力系统无功补偿及应用Non-Work Compensation in Power Systems&Applicati 电力系统谐波Harmonious Waves in Power Systems电力系统优化技术Optimal Technology of Power Systems电力系统优化设计Optimal Designing of Power Systems电力系统远动Operation of Electric Systems电力系统远动技术Operation Technique of Electric Systems电力系统运行Operation of Electric Systems电力系统自动化Automation of Electric Systems电力系统自动装置Power System Automation Equipment电路测试技术Circuit Measurement Technology电路测试技术基础Fundamentals of Circuit Measurement Technology电路测试技术及实验Circuit Measurement Technology&Experiments电路分析基础Basis of Circuit Analysis电路分析基础实验Basic Experiment on Circuit Analysis电路分析实验Experiment on Circuit Analysis电路和电子技术Circuit and Electronic Technique电路理论Theory of Circuit电路理论基础Fundamental Theory of Circuit电路理论实验Experiments in Theory of Circuct电路设计与测试技术Circuit Designing&Measurement Technology电器学Electrical Appliances电器与控制Electrical Appliances&Control电气控制技术Electrical Control Technology电视接收技术Television Reception Technology电视节目Television Porgrams电视节目制作Television Porgram Designing电视新技术New Television Technology电视原理Principles of Television电网调度自动化Automation of Electric Network Management电影艺术Art of Film Making电站微机检测控制Computerized Measurement&Control of Power Statio电子材料与元件测试技术Measuring Technology of Electronic Material and Element电子材料元件Electronic Material and Element电子材料元件测量Electronic Material and Element Measurement电子测量与实验技术Technology of Electronic Measurement&Experiment电子测试Electronic Testing电子测试技术Electronic Testing Technology电子测试技术与实验Electronic Testing Technology&Experiment电子机械运动控制技术Technology of Electronic Mechanic Movement Control电子技术Technology of Electronics电子技术腐蚀测试中的应用Application of Electronic Technology in Erosion Measurement 电子技术基础Basic Electronic Technology电子技术基础与实验Basic Electronic Technology&Experiment电子技术课程设计Course Exercise in Electronic Technology电子技术实验Experiment in Electronic Technology电子理论实验Experiment in Electronic Theory电子显微分析Electronic Micro-Analysis电子显微镜Electronic Microscope电子线路Electronic Circuit电子线路设计与测试技术Electronic Circuit Design&Measurement Technology电子线路实验Experiment in Electronic Circuit电子照相技术Electronic Photographing Technology雕塑艺术欣赏Appreciation of Sculptural Art调节装置Regulation Equipment动态规划Dynamic Programming动态无损检测Dynamic Non-Destruction Measurement动态信号分析与仪器Dynamic Signal Analysis&Apparatus锻压工艺Forging Technology锻压机械液压传动Hydraulic Transmission in Forging Machinery锻压加热设备Forging Heating Equipment锻压设备专题Lectures on Forging Press Equipments锻压系统动力学Dynamics of Forging System锻造工艺Forging Technology断裂力学Fracture Mechanics对外贸易概论Introduction to International Trade多层网络方法Multi-Layer Network Technology多目标优化方法Multipurpose Optimal Method多项距阵Multi-Nominal Matrix多元统计分析Multi-Variate Statistical Analysis发电厂Power Plant发电厂电气部分Electric Elements of Power Plants法律基础Fundamentals of Law法学概论An Introduction to Science of Law法学基础Fundamentals of Science of Law翻译Translation翻译理论与技巧Theory&Skills of Translation泛函分析Functional Analysis房屋建筑学Architectural Design&Construction非电量测量Non-Electricity Measurement非金属材料Non-Metal Materials非线性采样系统Non-Linear Sampling System非线性光学Non-Linear Optics非线性规划Non-Linear Programming非线性振荡Non-Linear Ocsillation非线性振动Non-Linear Vibration沸腾燃烧Boiling Combustion分析化学Analytical Chemistry分析化学实验Analytical Chemistry Experiment分析力学Analytical Mechanics风机调节Fan Regulation风机调节.使用.运转Regulation,Application&Operation of Fans风机三元流动理论与设计Tri-Variate Movement Theory&Design of Fans风能利用Wind Power Utilization腐蚀电化学实验Experiment in Erosive Electrochemistry复变函数Complex Variables Functions复变函数与积分变换Functions of Complex Variables&Integral Transformation复合材料力学Compound Material Mechanics傅里叶光学Fourier Optics概率论Probability Theory概率论与数理统计Probability Theory&Mathematical Statistics概率论与随机过程Probability Theory&Stochastic Process钢笔画Pen Drawing钢的热处理Heat-Treatment of Steel钢结构Steel Structure钢筋混凝土Reinforced Concrete钢筋混凝土及砖石结构Reinforced Concrete&Brick Structure钢砼结构Reinforced Concrete Structure高层建筑基础设计Designing bases of High Rising Buildings高层建筑结构设计Designing Structures of High Rising Buildings高等材料力学Advanced Material Mechanics高等代数Advanced Algebra高等教育管理Higher Education Management高等教育史History of Higher Education高等教育学Higher Education高等数学Advanced Mathematics高电压技术High-Voltage Technology高电压测试技术High-Voltage Test Technology高分子材料High Polymer Material高分子材料及加工High Polymer Material&Porcessing高分子化学High Polymer Chemistry高分子化学实验High Polymer Chemistry Experiment高分子物理High Polymer Physics高分子物理实验High Polymer Physics Experiment高级英语听说Advanced English Listening&Speaking高能密束焊High Energy-Dense Beam Welding高频电路High-Frenquency Circuit高频电子技术High-Frenquency Electronic Technology高频电子线路High-Frenquency Electronic Circuit高压测量技术High-Voltage Measurement Technology高压测试技术High-Voltage Testing Technology高压电场的数值计算Numerical Calculation in High-Voltage Electronic Field高压电器High-Voltage Electrical Appliances高压绝缘High-Voltage Insulation高压实验High-Voltage Experimentation高压试验技术High-Voltage Experimentation Technology工程材料的力学性能测试Mechanic Testing of Engineering Materials工程材料及热处理Engineering Material and Heat Treatment工程材料学Engineering Materials工程测量Engineering Surveying工程测试技术Engineering Testing Technique工程测试实验Experiment on Engineering Testing工程测试信息Information of Engineering Testing工程动力学Engineering Dynamics工程概论Introduction to Engineering工程概预算Project Budget工程经济学Engineering Economics工程静力学Engineering Statics工程力学Engineering Mechanics工程热力学Engineering Thermodynamics工程项目评估Engineering Project Evaluation工程优化方法Engineering Optimizational Method工程运动学Engineering Kinematics工程造价管理Engineering Cost Management工程制图Graphing of Engineering工业分析Industrial Analysis工业锅炉Industrial Boiler工业会计学Industrial Accounting工业机器人Industrial Robot工业技术基础Basic Industrial Technology工业建筑设计原理Principles of Industrial Building Design工业经济理论Industrial Economic Theory工业经济学Industrial Economics工业企业财务管理Industrial Enterprise Financial Management工业企业财务会计Accounting in Industrial Enterprises工业企业管理Industrial Enterprise Management工业企业经营管理Industrial Enterprise Adminstrative Management 工业社会学Industrial Sociology工业心理学Industrial Psychology工业窑炉Industrial Stoves工艺过程自动化Technics Process Automation公差Common Difference公差技术测量Technical Measurement with Common Difference公差与配合Common Difference&Cooperation公共关系学Public Relations公文写作Document Writing古代汉语Ancient Chinese古典文学作品选读Selected Readings in Classical Literature固体激光Solid State Laser固体激光器件Solid Laser Elements固体激光与电源Solid State Laser&Power Unit固体物理Solid State Physics管理概论Introduction to Management管理经济学Management Economics管理数学Management Mathematics管理系统模拟Management System Simulation管理心理学Management Psychology管理信息系统Management Information Systems光波导理论Light Wave Guide Theory光电技术Photoelectric Technology光电信号处理Photoelectric Signal Processing光电信号与系统分析Photoelectric Signal&Systematic Analysis光辐射探测技术Ray Radiation Detection Technology光谱Spectrum光谱分析Spectral Analysis光谱学Spectroscopy光纤传感Fibre Optical Sensors光纤传感器Fibre Optical Sensors光纤传感器基础Fundamentals of Fibre Optical Sensors光纤传感器及应用Fibre Optical Sensors&Applications光纤光学课程设计Course Design of Fibre Optical光纤技术实验Experiments in Fibre Optical Technology光纤通信基础Basis of Fibre Optical Communication光学Optics光学测量Optical Measurement光学分析法Optical Analysis Method光学计量仪器设计Optical Instrument Gauge Designing光学检测Optical Detection光学设计Optical Design光学信息导论Introduction of Optical Infomation光学仪器设计Optical Instrument Designing光学仪器与计量仪器设计Optical Instrument&Gauge Instrument Designing 光学仪器装配与校正Optical Instrument Installation&Adjustment广播编辑学Broadcast Editing广播新闻Broadcast Journalism广播新闻采写Broadcast Journalism Collection&Composition广告学Advertisement锅炉燃烧理论Theory of Boiler Combustion锅炉热交换传热强化Boiler Heat Exchange,Condction&Intensification锅炉原理Principles of Boiler国际金融International Finance国际经济法International Economic Law国际贸易International Trade国际贸易地理International Trade Geography国际贸易实务International Trade Affairs国际市场学International Marketing国际市场营销International Marketing国民经济计划National Economical Planning国外社会学理论Overseas Theories of Sociology过程(控制)调节装置Process(Control)Adjustment Device过程调节系统Process Adjustment System过程控制Process Control过程控制系统Process Control System海洋测量Ocean Surveying海洋工程概论Introduction to Ocean Engineering函数分析Functional Analysis焊接方法Welding Method焊接方法及设备Welding Method&Equipment焊接检验Welding Testing焊接结构Welding Structure焊接金相Welding Fractography焊接金相分析Welding Fractography Analysis焊接冶金Welding Metallurgy焊接原理Fundamentals of Welding焊接原理及工艺Fundamentals of Welding&Technology焊接自动化Automation of Welding汉语Chinese汉语与写作Chinese&Composition汉语语法研究Research on Chinese Grammar汉字信息处理技术Technology of Chinese Information Processing毫微秒脉冲技术Millimicrosecond Pusle Technique核动力技术Nuclear Power Technology合唱与指挥Chorus&Conduction合金钢Alloy Steel宏观经济学Macro-Economics宏微观经济学Macro Micro Economics红外CCD Infrared CCD红外电荷耦合器Infrared Electric Charge Coupler红外探测器Infrared Detectors红外物理Infrared Physics红外物理与技术Infrared Physics&Technology红外系统Infrared System红外系统电信号处理Processing Electric Signals from Infrared Systems厚薄膜集成电路Thick&Thin Film Integrated Circuit弧焊电源Arc Welding Power弧焊原理Arc Welding Principles互换性技术测量基础Basic Technology of Exchangeability Measurement互换性技术测量Technology of Exchangeability Measurement互换性与技术测量Elementary Technology of Exchangeability Measurement互换性与技术测量实验Experiment of Exchangeability Measurement Technology 画法几何及机械制图Descriptive Geometry&Mechanical Graphing画法几何与阴影透视Descriptive Geometry,Shadow and Perspective化工基础Elementary Chemical Industry化工仪表与自动化Chemical Meters&Automation化工原理Principles of Chemical Industry化学Chemistry化学反应工程Chemical Reaction Engineering化学分离Chemical Decomposition化学工程基础Elementary Chemical Engineering化学计量学Chemical Measurement化学文献Chemical Literature化学文献及查阅方法Chemical Literature&Consulting Method化学粘结剂Chemical Felter环境保护理论基础Basic Theory of Environmental Protection环境化学Environomental Chemistry环境行为概论Introduction to Environmental Behavior换热器Thermal Transducer回旧分析与试验设计Tempering Analysis and Experiment Design回转式压缩机Rotary Compressor回转压缩机数学模型Mathematical Modeling of Rotary Compressors会计学Accountancy会计与财务分析Accountancy&Financial Analysis会计与设备分析Accountancy&Equipment Analysis会计原理及外贸会计Principles of Accountancy&Foreign Trade Accountancy会计原理与工业会计Principles of Accountancy&Industrial Accountancy活力学Energy Theory活塞膨胀机Piston Expander活塞式制冷压缩机Piston Refrigerant Compreessor活塞式压缩机Piston Compressor活塞式压缩机基础设计Basic Design of Piston Compressor活塞压缩机结构强度Structural Intensity of Piston Compressor活赛压机气流脉动Gas Pulsation of Piston Pressor货币银行学Currency Banking基本电路理论Basis Theory of Circuit基础写作Fundamental Course of Composition机床电路Machine Tool Circuit机床电器Machine Tool Electric Appliance机床电气控制Electrical Control of Machinery Tools机床动力学Machine Tool Dynamics机床设计Machine Tool design机床数字控制Digital Control of Machine Tool机床液压传动Machinery Tool Hydraulic Transmission机电传动Mechanical&Electrical Transmission机电传动控制Mechanical&electrical Transmission Control机电耦合系统Mechanical&Electrical Combination System机电系统计算机仿真Computer Simulation of Mechanic/Electrical Systems机电一体化Mechanical&Electrical Integration机构学Structuring机器人Robot机器人控制技术Robot Control Technology机械产品学Mechanic Products机械产品造型设计Shape Design of Mechanical Products机械工程控制基础Basic Mechanic Engineering Control机械加工自动化Automation in Mechanical Working机械可靠性Mechanical Reliability机械零件Mechanical Elements机械零件设计Course Exercise in Machinery Elements Design机械零件设计基础Basis of Machinery Elements Design机械设计Mechanical Designing机械设计基础Basis of Mechanical Designing机械设计课程设计Course Exercise in Mechanical Design机械设计原理Principle of Mechanical Designing机械式信息传输机构Mechanical Information Transmission Device机械原理Principle of Mechanics机械原理和机械零件Mechanism&Machinery机械原理及机械设计Mechanical Designing机械原理及应用Mechanical Principle&Mechanical Applications机械原理课程设计Course Exercise of Mechanical Principle机械原理与机械零件Mechanical Principle and Mechanical Elements机械原理与机械设计Mechanical Principle and Mechanical Design机械噪声控制Control of Mechanical Noise机械制造概论Introduction to Mechanical Manufacture机械制造工艺学Technology of Mechanical Manufacture机械制造基础Fundamental of Mechanical Manufacture机械制造基础(金属工艺学)Fundamental Course of Mechanic Manufacturing(Meta 机械制造系统自动化Automation of Mechanical Manufacture System机械制造中计算机控制Computer Control in Mechanical Manufacture机制工艺及夹具Mechanical Technology and Clamps积分变换Integral Transformation积分变换及数理方程Integral Transformation&Mathematical Equations积分变换控制工程Integral Transformation Control Engineering积分变换与动力工程Integral Transforms&Dynamic Engineering激光电源Laser Power Devices激光焊Laser Welding激光基础Basis of Laser激光技术Laser Technology激光加工Laser Processing激光器件Laser Devices激光器件与电源Laser Devices&Power Source激光原理Principles of Laser激光原理与技术Laser Principles&Technology极限分析Limit Analysis集合论与代数结构Set Theory&Algebraical Structure技术管理Technological Management技术经济Technological Economy技术经济学Technological Economics技术市场学Technological Marketing计量经济学Measure Economics计算方法Computational Method计算机导论Introduction to Computers计算机导论与实践Introduction to Computers&Practice计算机辅助设计CAD计算机辅助设计与仿真Computer Aided Design&Imitation计算机辅助语言教学Computer-Aided Language Teaching计算机辅助制造Computer-Aided Manufacturing计算机概论Introduction to Computers计算机绘图Computer Graphics计算机基础Basis of Computer Engineering计算机接口技术Computer Interface Technology计算机接口与通讯Computer Interface&Communication计算机局域网Regional Network of Computers计算机控制Computer Controling计算机设计自动化Automation of Computer Design计算机实践Computer Practice计算机数据库Computer Database计算机算法基础Basis of Computer Algorithm计算机图形显示Computer Graphic Demonstration计算机图形学Computer Graphics计算机网络Computer Networks计算机系统结构Computer Architecture计算机语言处理Computer Language Processing计算机原理Principle of Computer Engineering计算机在化学中的应用Application of Computer in Chemistry计算机组成原理Principles of Computer Composition计算力学Computational Mechanics计算力学基础Basis of Computational Mechanics计算流体Fluid Computation继电保护新技术New Technology of Relay Protection继电保护原理Principles of Relay Protection继电保护运行Relay-Protected Operation检测技术Measurement Technique检测系统动力学Detection System Dynamics检测与控制Detection&Controling简明社会学Concise Sociology简明世界史Brief World History减振设计Vibration Absorption Designing渐近方法Asymptotical Method建筑材料Building Materials建筑初步Elementary Architecture建筑防火Building Fire Protection建筑概论Introduction to Architecture建筑构造Architectural Construction建筑结构Architectural Structure建筑结构抗震设计Anti-quake Architectural Structure Design建筑经济与企业管理Architectural Economy&Enterprise Management建筑力学Architectural Mechanics建筑名作欣赏Appreciation of Architectural Works建筑入门Elementary Architecture建筑摄影Architectural Photographing建筑设备Architectural Equipment建筑设计Architectural Design建筑施工Construction Technology建筑绘画Architectural Drawing建筑物理Architecural Physics建筑制图Architectural Graphing胶体化学Colloid Chemistry交流调速系统Alternating Current Governor System教育心理学Pedagogic Psychology接口与控制器Interface and Controler接口与通讯Interface and Communication结构程序设计Structural Program Designing结构动力学Structural Dynamics结构化学Structural Chemistry结构检验Structural Testing结构力学Structural Mechanics结构素描Structure Sketching结构塑性分析Structural Plasticity Analysis结构稳定Stability Analysis of Structures结构先进技术Advanced Structuring Technology结构优化理论Optimal Structure Theory结构优化设计Optimal Structure Designing解析几何Analytic Geometry介质波导Medium Wave Guide介质测量Medium Measurement介质光学Medium Optics金属X射线学Metal X-Ray Analysis金属材料焊接Metal Material Welding金属材料学Metal Material Science金属材料与热处理Metal Material&Heat Treatment金属腐蚀与保护Metal Erosion&Protection金属腐蚀原理Principles of Metal Erosion金属工艺学Metal Technics金属焊接性基础Elementary Metal Weldability金属焊接原理Principles of Metal Welding金属机械性能Mechanical Property of Metal金属力学性能Metal Mechanic Property金属切削机床Metal Cutting Machine Tool金属切削原理及刀具Principles of Metal Cutting&Cutters 金属熔焊原理Principles of Metal Molten Welding。
单片机原理及应用课程设计
单片机原理及应用课程设计一、引言单片机（Microcontroller，MCU）是一种高度集成的微处理器系统，具有处理器核、存储器、输入输出接口和定时计数器等基本功能模块，并且这些模块都集成在一个芯片上。
单片机具有体积小、功耗低、可靠性高、成本低等优点，广泛应用于家用电器、汽车电子、工业自动化等领域。
本文将介绍单片机的原理及应用，并设计一个基于单片机的智能温控系统。
二、单片机原理1. 单片机结构单片机由CPU（Central Processing Unit）、存储器和外设组成。
其中CPU包括运算器（ALU）、控制器（CU）和寄存器组；存储器包括ROM（Read Only Memory）、RAM（Random Access Memory）和EEPROM（Electrically Erasable Programmable Read-Only Memory）；外设包括输入输出接口、定时计数器和串行通信接口等。
2. 单片机工作原理当单片机上电后，CPU从ROM中读取程序指令，并将其存放在RAM 中执行。
程序指令由操作码和操作数两部分组成，操作码表示指令类型，操作数表示指令参数。
CPU根据程序指令逐条执行相应的操作，完成各种任务。
3. 单片机编程单片机编程是指将程序代码翻译成单片机能够识别的指令，然后通过编程器将指令下载到单片机中。
常用的单片机编程语言有汇编语言、C 语言和BASIC语言等。
三、智能温控系统设计1. 系统功能本系统旨在实现对室内温度的监测和控制。
当室内温度超过设定值时，系统会自动启动降温设备，直到温度降至设定值以下。
当室内温度低于设定值时，系统会自动启动加热设备，直到温度升至设定值以上。
2. 系统硬件设计本系统采用AT89S52单片机作为控制核心，DS18B20数字温度传感器作为温度检测模块，LCD1602液晶显示屏作为人机交互界面，继电器模块作为输出控制模块。
3. 系统软件设计(1) 初始化：设置IO口方向、液晶显示初始化、定时器初始化等。
单片机有什么用_学单片机有前途吗
单片机有什么用_学单片机有前途吗什么是单片机所谓单片机，就是把中央处理器CPU（Central Processing Unit）、存储器（Memory）、定时器、I/0（Input/Output）接口电路等一些计算机的主要功能部件集成在一块集成电路芯片上的微型计算机。
虽然单片机只是一个芯片，但从组成和功能上看，它已具有了微型计算机系统的含义。
中文“单片机”的称呼由英文名称“Single Chip Microcomputer”直接翻译而来。
单片机把微型计算机的各主要部分集成在一块芯片上，大大缩短了系统内信号传送距离，从而提高了系统的可靠性及运行速度。
因而在工业测控领域中，单片机系统是最理想的控制系统。
所以，单片机是典型的嵌人式系统，是嵌入式系统低端应用的最佳选择。
单片机是如何工作的？单片机的工作过程就是一个不断“取指令-分析指令-执行指令”的过程。
单片机的程序以一条一条指令的形式存放在程序存储器中，单片机开始工作后，就从程序存储器的特定位置开始取指令，然后由单片机内部的控制器对指令进行分析，根据指令要求，进行“取数、送数、算术运算、逻辑运算、跳转”等基本操作中的一种或几种，这些操作都在一个规定的周期中完成，执行完了以后，到下一个存储器单元中取指令，重复刚才的操作（当然，这些要执行的操作具体内容可能跟上一次不一样了），如此不断重复，直到断电为止。
这里所说的“存储器特定位置”、“规定的周期”等与单片机的型号有关，下面以51系列单片机为例来说明。
在51系列单片机中有一个名为PC的寄存器（就是用来存数的一个容器），在单片机复位后，这个寄存器中的内容被置为0000H，单片机内部的控制器总是根据PC寄存器中的值去相应的程序存储器单元取指令，因此，开机后，将从0000H单元取第一条指令，分析执行，同时，PC值将作相应的调整，指向将要执行的下一条指令的位置，下一条指令的位置在哪里呢？对于51单片机来说，一条指令可能占用一个字节、二个字节或三个字节，如果第一条指令是单字节指令，取完第一条指令以后，PC的值就会变为0001H，因此，第一条指令执行完毕以后，将从0001H单元中取出第二条指令来执行，以此类推。
单片机微控制器中英文对照外文翻译文献
中英文对照外文翻译单片机单片机也被称为微控制器（Microcontroller Unit），常用英文字母的缩写MCU表示单片机，它最早是被用在工业控制领域。
单片机由芯片内仅有CPU的专用处理器发展而来。
最早的设计理念是通过将大量外围设备和CPU集成在一个芯片中，使计算机系统更小，更容易集成进复杂的而对体积要求严格的控制设备当中。
INTEL的Z80是最早按照这种思想设计出的处理器，从此以后，单片机和专用处理器的发展便分道扬镳。
早期的单片机都是8位或4位的。
其中最成功的是INTEL的8031，因为简单可靠而性能不错获得了很大的好评。
此后在8031上发展出了MCS51系列单片机系统。
基于这一系统的单片机系统直到现在还在广泛使用。
随着工业控制领域要求的提高，开始出现了16位单片机，但因为性价比不理想并未得到很广泛的应用。
90年代后随着消费电子产品大发展，单片机技术得到了巨大提高。
随着INTEL i960系列特别是后来的ARM系列的广泛应用，32位单片机迅速取代16位单片机的高端地位，并且进入主流市场。
而传统的8位单片机的性能也得到了飞速提高，处理能力比起80年代提高了数百倍。
目前，高端的32位单片机主频已经超过300MHz，性能直追90年代中期的专用处理器，而普通的型号出厂价格跌落至1美元，最高端的型号也只有10美元。
当代单片机系统已经不再只在裸机环境下开发和使用，大量专用的嵌入式操作系统被广泛应用在全系列的单片机上。
而在作为掌上电脑和手机核心处理的高端单片机甚至可以直接使用专用的Windows和Linux操作系统。
单片机比专用处理器更适合应用于嵌入式系统，因此它得到了最多的应用。
事实上单片机是世界上数量最多的计算机。
现代人类生活中所用的几乎每件电子和机械产品中都会集成有单片机。
手机、电话、计算器、家用电器、电子玩具、掌上电脑以及鼠标等电脑配件中都配有1-2部单片机。
而个人电脑中也会有为数不少的单片机在工作。
单片机STM32外文文献翻译、中英文翻译
外文翻译英文原文：STM32 MicrocontrollerIntroductionRequirements based STM32 family is designed for high-performance, low-cost, low-power embedded applications designed specifically for ARM Cortex-M3 core. According to the performance into two different series: STM32F103 "Enhanced" series and STM32F101 "Basic" series. Enhanced Series clock frequency of 72MHz, the highest performance of similar products product; basic clock frequency of 36MHz, 16-bit product prices get more than 16 products significantly enhance the performance and is 16 product users the best choice. Both series have built-in 32K to 128K of flash memory, the difference is the maximum capacity of the SRAM and peripheral combinations. At 72MHz, executing from Flash, STM32 power consumption 36mA, are 32 products on the market's lowest power, the equivalent of 0.5mA/MHz.STM32F103 Performance Characteristics1) Kernel. ARM32 bit CPU, the maximum operating frequency of 72MHz,1.25DMIPS/MHz. Single-cycle multiply and hardware divide.2) Memory. Integrated on-chip 32-512KB of Flash memory. 6-64KB SRAMmemory.3) Clock, reset, and power management. 2.0-3.6V power supply and I / O interface, the drive voltage. POR, PDR and programmable voltage detector. 4-16MHz crystal. Embedded factory tuned 8MHz RC oscillator circuit. 40 kHz internal RC oscillator circuit. CPU clock for the PLL. With calibration for the RTC 32kHz crystal.4) Low power consumption. Three kinds of low-power mode. Sleep, stop, standby mode. For RTC and backup registers supply VBAT.5) Debug mode. Serial debugging and JTAG interface.6) Direct data storage. 12-channel direct data storage controller. Supported peripherals: timers, ADC, DAC, SPI, IIC and USART.7) Up to a maximum of 112 fast I / O ports. Depending on the model, there are 26,37,51,80, and 112 I / O ports, all ports can be mapped to 16 external interruptvectors. In addition to the analog input, all of them can accept the input of 5V or less.8) Up to a maximum of 11 timers. Four 16-bit timers, each with 4 IC / OC / PWM or pulse counter. 2 16 6-channel advanced control timer: up to 6 channels can be used for PWM output. 2 watchdog timer. Systick timer: 24 down counter. Two 16-bit basic timer for driving DAC.9) Up to a maximum of 13 communication interfaces. 2 IIC interface. 5 USART interfaces. 3 SPI interface, two and IIS reuse. CAN interface. USB 2.0 full-speed interface. SDIO interface.System Function1) Integration of embedded Flash and SRAM memory ARM Cortex-M3 core. And 8/16 equipment compared, ARM Cortex-M3 32-bit RISC processor provides a higher code efficiency. STM32F103xx microcontrollers with an embedded ARM core, so it can be compatible with all ARM tools and software.2) Embedded Flash memory and RAM memory. Built up to 512KB embedded Flash, can be used to store programs and data. Up to 64KB of embedded SRAM clock speed of the CPU can read and write.3) Variable static memory. Variable static memory with 4 chip selects, supports four modes: Flash, RAM, PSRAM, NOR and NAND. After three FSMC interrupt lines connected to the OR after the nested vector interrupt controller. No read / write FIFO, except PCCARD, the code is executed from external memory is not supported Boot, the target frequency is equal to SYSCLK / 2, so the time when the system clock is 72MHz, 36MHz conducted in accordance with external access.4) Nested Vectored Interrupt Controller. Can handle 43 maskable interrupt channels, providing 16 interrupt priority levels. Tightly coupled nested vectored interrupt controller to achieve lower latency interrupt handling directly passed to the kernel interrupt vector table entry address, tightly coupled nested vectored interrupt controller kernel interface, allowing early treatment interruption, the latter to be more high-priority interrupt processing, support tail chain, auto-save processor state terrupts automatically restored on interrupt exit, no instructions intervention.5) External interrupt / event controller. External interrupt / event controller consists for 19 to generate interrupt / event requests edge detector lines. Each line can be individually configured to select the trigger event, it can be individually masked. There is a pending interrupt request registers to maintain state. When an external line appear longer than the internal APB2 clock-cycle pulse, the external interrupt / eventcontroller is able to detect. Up to 112 GPIO connected to the 16 external interrupt lines.6) Clocks and startup. At boot time or to the system clock selection, but the reset when the internal 8MHz crystal oscillator is selected as the CPU clock. Can choose a 4-16MHz external clock, and will be monitored to determine the success. During this time, the interrupt controller is disabled and the software management is subsequently disabled. Also, if there is a need, PLL clock interrupt management fully available. Comparator can be used more pre-configuration of the AHB frequency, including high-speed and low-speed APB APB, APB highest frequency of high-speed 72MHz, low-speed APB highest frequency of 36MHz.Architectural AdvantagesIn addition to the new features Enhanced peripheral interfaces, STM32 series also interconnect with other STM32 microcontrollers offer the same standard interface, such sharing of peripherals to enhance the entire product family, application flexibility, so that developers can a plurality of design reuse the same software. New STM32 standard peripherals include 10 timers, two 12-bit ADC, two 12-bit DAC, two I2C interfaces, five USART interfaces and three SPI ports. There are 12 new products peripherals direct data storage channel, there is a CRC calculation unit, like other STM32 microcontrollers, the supports 96 unique identifier.New series also has followed the STM32 microcontroller family of products low voltage and energy saving are two advantages. 2.0V to 3.6V operating voltage range compatible with the mainstream of battery technologies such as lithium batteries and nickel-metal hydride batteries, the package also features a battery operation mode dedicated pin Vbat. 72MHz frequency to execute code from flash consumes only 27mA current. There are four low-power mode, the current consumption can be reduced to two microamps. Quick Start from low power mode to save energy too; starting circuit using STM32 internally generated 8MHz signal, the microcontroller from stop mode when you wake up with less than 6 microseconds.中文翻译：单片机STM321 STM32的介绍STM32系列基于专为要求高性能、低成本、低功耗的嵌入式应用专门设计的ARM Cortex-M3内核。
单片机相关名词解释
MCU:微控制器(Micro Controller Unit)，也称单片机。
单片机是一种集成在电路芯片，是采用超大规模集成电路技术把具有数据处理能力的中央处理器CPU随机存储器RAM、只读存储器ROM、多种I/O口和中断系统、定时器/计时器等功能（可能还包括显示驱动电路、脉宽调制电路、模拟多路转换器、A/D转换器等电路）集成到一块硅片上构成的一个小而完善的计算机系统。
JTAG：joint test action group，又名JTAG Boundary ScanJTAG 主要应用于：电路的边界扫描测试和可编程芯片的在线系统编程ISP:在线编程（In System Programmable），不需要将芯片从PCB板上取下来，直接在板上下载程序，所以串行编程方式也是最方便和最常用的编程方式。
IAP(In Application Programmable)在运行编程方式，采用了称为自引导加载（Boot Load）技术实现的，往往在一些需要进行远程修改更新系统程序，或动态改变系统程序的应用中才采用。
Flash存储器：Flash Memory，可供用户多次擦除和写入程序代码，现在可实现大于1万次的写入操作RAM:RAM -random access memory 随机存储器。
存储单元的内容可按需随意取出或存入，且存取的速度与存储单元的位置无关的存储器。
这种存储器在断电时将丢失其存储内容，故主要用于存储短时间使用的程序。
SRAM：是英文Static RAM的缩写，它是一种具有静止存取功能的内存，不需要刷新电路即能保存它内部存储的数据，而DRAM（Dynamic Random Access Memory)每隔一段时间，要刷新充电一次，否则内部的数据即会消失，EEPROM :电可擦除存储器(Electrically Erasable Programmable Read-Only Memory)，电可擦可编程只读存储器--一种掉电后数据不丢失的存储芯片。
at89c52单片机中英文资料对照外文翻译文献综述
D.htmlat89c52单片机中英文资料对照外文翻译文献综述at89c52单片机简介中英文资料对照外文翻译文献综述AT89C52 Single-chip microprocessor introductionSelection of Single-chip microprocessor1. Development of Single-chip microprocessorThe main component part of Single-chip microprocessor as a result of by such centralize to be living to obtain on the chip，In immediate future middle processor CPU。
Storage RAM immediately﹑memoy readROM﹑Interrupt system、Timer /'s counter along with I/O's rim electric circuit awaits the main microcomputer section，The lumping is living on the chip。
Although the Single-chip microprocessor r is only a chip，Yet through makes up and the meritorous service be able to on sees，It had haveed the calculating machine system property，calling it for this reason act as Single-chip microprocessor r minisize calculating machine SCMS and abbreviate the Single-chip microprocessor。
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毕业设计（论文）外文翻译设计（论文）题目洗衣机控制电路设计院（系）电气工程及其自动化专业应用电子学生姓名熊晨辰学号 Z842C06107 指导老师徐莹隽起讫日期 2010年3月至 2010年 6月Single-chip1.The definition of a single-chipSingle-chip is an integrated on a single chip a complete computer system .Even though most of his features in a small chip，but it has a need to complete the majority of computer components：CPU，memory，internal and external bus system，most will have the Core.At the same time，such as integrated communication interfaces，timers，real-time clock and other peripheral equipment.And now the most powerful single-chip microcomputer system can even voice ，image，networking，input and output complex system integration on a single chip.Also known as single-chip MCU（Microcontroller），because it was first used in the field of industrial control.Only by the single-chip CPU chip developed from the dedicated processor. The design concept is the first by a large numberof peripherals and CPU in a single chip，the computer system so that smaller，more easily integrated into the complex and demanding on the volume control devices.INTEL the Z80 is one of the first design in accordance with the idea of the processor，From then on，the MCU and the development of a dedicated processor parted ways.Early single-chip 8-bit or all the four.One of the most successful is INTELs 8031，because the performance of a simple and reliable access to a lot of good praise.Since then in 8031to develop a single-chip microcomputer system MCS51 series.based on single-chip microcomputer system of the system is still widely used until now.As the field of industrial control requirements increase in the beginning of a 16-bit single-chip，but not ideal because the price has not been very widely used.After the90s with the big consumer electronics product development，single-chip technology is a huge improvement.INTEL i960 series with subsequent ARM in particular ，a broad range of application，quickly replaced by 32-bit single-chip 16-bit single-chip performance has been the rapid increase in processing power compared to the 80s to raise a few hundred times.At present，the high-end 32-bit single-chip frequency over 300MHz，the performance of the mid-90s close on the heels of a special processor，while the ordinary price of the model dropped to one U.S dollars，the most high-end models，only 10 U.S dollars.Contemporary single-chip microcomputer system is no longer only the bare-metal environment in the development and use of a large number of dedicated embedded operating system is widely used in the full range of single-chip microcomputer.In PDAs and cellphones as the coreprocessing of high-end single-chip or even a dedicated direct access to Windows and Linux operating systems.More than a dedicated single-chip processor suitable for embedded systems，so it was up to the application.In fact the number of single-chip is the worlds largest computer.Modern human life used in almost every piece of electronic and mechanical products will have a single-chip integration.Phone，telephone，calculator，home applicances，electronic toys，handheld computers and computer accessories such as a mouse in the Department are equipped with 1-2 single chip.And personal computers also have a large number of single-chip microcomputer in the workplace.Vehicles equipped with more than 40 Department of the general single-chip ，complex industrial control systems and even single-chip may have hundreds of work at the same time!SCM is not only far exceeds the number of PC and other integrated computing,even more than the number of human beings.2.single-chip introducedSingle-chip,also known as single-chip microcontroller,it is not the completion of a logic function of the chip,but a computer system integrated into a chip.Speaking in general terms: a single chip has become a computer .Its small size,light weight,cheap,for the learning,application and development of facilities provided .At the same time,learning to use the principle of single-chip computer to understand and structure the best choice.Single-chip and computer use is also similar to the module,such as CPU,memory,parallel bus, as well as the role and the same hard memory,is it different from the performance of these components are relatively weak in our home computer a lot,but the price is low ,there is generally no more than 10yuan,,can use it to make some control for a class of electrical work is not very complex is sufficient.We are using automatic drum washing machines, smoke hood,VCD and so on inside the home appliances can see its shadow! It is mainly as part of the core components of the control.It is an online real-time control computer,control-line is at the scene,we need to have a stronger anti-interference ability,low cost,and this is off-line computer(such as home PC)The main difference.By single-chip process,and can be amended.Through different procedures to achieve different functions,in particular the special unique features,this is the need to charge other devices can do a great effort,some of it is also difficult to make great efforts to do so .A function is not very complicated fi the United States the development of the 50s series of 74 or 60 during the CD4000series to get these pure hardware,the circuit must be a big PCB board !However,if the United States if the successful 70s seriesof single-chip market ,the result will be different!Simply because the adoption of single-chip preparation process you can achieve high intelligence,high efficiency and high reliability!Because of cost of single-chip is sensitive,so the dominant software or the lowest level assembly language,which is in addition to the lowest level for more than binary machine code of the language ,since such a low-level so why should we use ?Many of the seniors language has reached a level of visual programming why is it not in use ?The reason is simple ,that is,single-chip computer as there is no home of CPU,also not as hard as the mass storage device.A visualization of small high-level language program,even if there is only one button which will reach the size of dozens of K! For the home PCs hard drive is nothing,but in terms of the single-chip microcomputer is unacceptable.Single-chip in the utilization of hardware resources have to do very high ,so the compilation of the original while still in heavy use .The same token ,if the computer giants operating system and appplications run up to get the home PC,homePCcan not afford to sustain the same.It can be said that the twentieth century across the three “power”of the times,that is ,the electrical era,the electronic age and has now entered the computer age. However ,such a computer,usually refers to a personal computer,or PC.It consisits of the host ,keyboards,displays .And other components.There is also a type of computer,not how most people are familiar with . This computer is smart to give a variety of mechanical single-chip(also known as micro-controller).As the name suggests,these computer systems use only the minimum of an integrated circuit to make a simple calculation and control. Because of its small size,are usually charged with possession of machine in the “belly”in. It in the device,like the human mind plays a role, it is wrong,the entire device was paralyzed .Now,this single chip has a very wide field of use,such as smart meters,real-time industrial control,communications equipment,navigation systems,and household appliances. Once a variety of products with the use of the single-chip ,will be able to play so that the effectiveness of product upgrading,product names often adjective before the word “intelligent”,such as was hing machines and so intelligent.At present,some technical personnel of factories or other amateur electrtonics developers from engaging in certain products ,not the circuit is too complex ,that is functional and easy to be too simple imitation.The reason may be the product not on the cards or the use of single-chip programmable logic device on the other.3.single-chip historysingle-chip 70 was born in the late 20th century,experienced a SCM,MCU,SOC three stages.Single-chip micro-computer 1.SCM that(Single Chip Microcomputer)stage,is mainly a single from to find the best of the best embedded systems architecture.”Innovation model”to be successful,lay the SCM with the general-purpose computers,a completely different path of development . In embedded systems to create an independent development path,Intel Corporation credit.That is 2.MCU microcontroller(Micro Controller Unit)stage,the main direction of technology development: expanding to meet the embedded applications,the target system requirements for the various peripheral circuits and interface circuits,to highlingt the target of intelligent control.It covers all areas related with the objectSystem,therefore,the development of MCU inevitably fall on the heavy electrical,electronics manufacturers. From this point of view ,Intels development gradually MCU has its objective factors.MCU in the development ,the most famous manufacturers when the number of Philips Corporation.Philips in embedded applications for its enormous advantages,the MCS-51 from the rapid deveploment of single-chip micro-computer to the microcontroller.Therefore,when we look back at the path of development of embedded systems,Intel and Philips do not forget the historical merits.3.Single-chip is an independent embedded systems development,to the MCU an important factor in the development stage,is seeking applications to maximize the natural trend .With the mico-electronics technology,IC design,EDA tools development,based on the single-chip SOC design application systems will have greater development. Therefore,the understanding of single-chip micro-computer from a single ,monolithic single-chip microcontroller extends to applications.4.Single-chip applicationsAt present,single-chip microcomputer to infiltrate all areas of our lives,which is very difficult to find the area of almost no traces of single-chip microcomputer.Missile navigation equipment,aircraft control on a variety of instruments,compuer network communications and data transmission,industrial automation,real-time process control and data processing ,are widely used in a variety of smart IC card,limousine civilian security systems,video recorders,cameras,the control of automatic washing machines,as well as program-controllde toys,electronic pet,etc,which are inseparable from the single-chip microcomputer.Not to mention the field of robot automation ,intelligent instrumentation,medical equipment has been. Therefore,the single- chip learning ,development and application to a large number of computer applications and intelligent control of scientists,engineers.Single-chip widely used in instruments and meters,household appliances，medical equipment ,acrospace,specialized equipment and the intellingent management in areas such as process control,generally can be divided into the following areas:1.In the smart application of instrumentationSingle-chip with small size,low power consumption,control,and expansion flexibility , miniaturization and ease of sensors,can be realized,suchvoltage,power,frequency,humidity,temperature,flow,speed,thickness,angle,length,hardness,elemen t,measurement of physical pressure. SCM makes use of digital instrumentation,intelligence,miniaturization and functional than the use of electronic or digital circuitry even stronger.For example,precision measurement equipment(power meter,oscilloscope,and analyzer).2.In the industrial controlMCU can constitute a variety of control systems,data acquisition system.Such as factory assembly line of intelligent management ,intelligent control of the lift ,all kinds of alarm systems ,and computer networks constitute a secondary control system.3.In the applicationof household appliancesIt can be said that almost all home appliances are using the single-chip control,electric rice from favorable,washing machines,refrigerators,air conditioners,color TV and other audio video equipment,and then to the electronic weighing equipment,all kinds ,everywhere.4.On computer networks and communication applications in the field ofGenerally with the modern single-chip communication interface,can be easily carried out with computer carried out with computer data communications,computer networks and in inter-application communications equipment to provide an excellent material conditions,the communications equipment to provide an excellent material condition,from the mobile phone ,telephone , mini-program-controlled switchboards,buiding automated communications system call,the train wireless communications,and then you can see day-to-day work of mobile phones,Mobile communications,such as radios.5.Single-chip in the field of medical equipment applicationsSingle-chip microcomputer in medical devices have a wide range of purpose,such as medical ventilator,various analyzers,monitors,ultrasonic diagnostic equipment and hospital call systems.6.In a variety of large-scale electrical applications of modularSome special single-chip design to achieve a specific function to carry out a variety of modular circuitapplications,without requiring users to understand its internal structure.Integrated single-chip microcomputer such as music ,which seems to be simpleFunctions,a miniature electronic chip in a pure(as distinct from the principle of tape machine),would require a complex similar to the principle of the computer. Such as :music signal to digital form stored in memory(similar to ROM),read out by the microcontroller into analog music signal(similar to the sound card).In large circuits,modular applications that greatly reduces the size ,simplifying the circuit and reduce the damage,error rate ,but also to facilitate the replacement.In addition,single-chip microcomputer in the industrial,commercial,financial,scientific research ,education,defense aerospace and other fields have a wide range of uses.单片机1.单片机定义单片机是一种集成在电路芯片上的完整计算机系统。