MSP430FF11X1a

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基于MSP430F11X的低功耗温度记录仪

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流耗为０。Ｓ３采ＲＣ简令，消约５ＡＭ４Ｆ２用Ｉ精指集ＢＰ０１ＳＩ
大多数的指令可在一个指令周期里完成，使得
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ＭＳ４０１２具有超强的抗干扰能力并采用内部安全Ｐ３Ｆ还１
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保密熔丝对程序进行加密。ｒ５Ｂ４４Ｄ０１Ａ４Ｄ０ＩＴＬ司大容量低功耗ＦＡＨ存Ｔ５Ｂ４为ＡＭＥ公ＬＳ储器，它可工作３电压，工作电流为４ＶｍＡ，待机状态下仅为２ＡＢ。Ａ４Ｄ０１主存共２４页，页２４Ｔ５Ｂ４的０８每６字节，总容量为５８２Ｋ字节，合４比特。存放在主存中约Ｍ
依赖．大大拓宽了应用范围。过程
系统工作原理
整个系统采用模块化设计，分为温度采集器与数据
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msp430各功能模块的介绍

各个时钟信号源介绍如下：1、LFXT1CLK：低频/高频时钟源。

可以外接32768Hz的时钟芯片或频率为450KHz~8MHz的标准警惕或共振器。

2、XT2CLK:高频时钟源。

需要外接两个震荡电容器。

可以外接32768Hz的时钟芯片或频率为450KHz~8MHz的标准警惕或共振器和外部时钟输入。

较常用的晶体是8MHz的。

3、DCOCLK：内部数字可控制的RC振荡器。

MSP430单片机时钟模块提供3个时钟信号以供给片内各部分电路使用，这3个时钟信号分别是：（1）ACLK：辅助时钟信号。

ACLK是从LFXT1CLK信号由1/2/4/8分频器分频后得到的。

由BCSCTL1寄存器设置DIV A相应位来决定分频因子。

ACLK可提供给CPU外围功能模块做时钟信号使用。

（2）MCLK:主时钟信号。

MCLK是由3个时钟源所提供的。

它们分别是：LFXT1CLK、XT2CLK、和DCO时钟源信号。

MCLK主要用于MCU和相关模块做时钟。

同样可设置相关寄存器来决定分频因子及相关设置。

（3）SMCLK：子系统时钟。

SMCLK由2个时钟源信号提供，他们分别是XT2CLK 和DCO。

如果是F11或F11X1系列单片机，则由LFXT1CLK代替XT2CLK。

同样可设置相关寄存器来决定分频因子及相关的设置。

低频振荡器LFXT1:LFXT1支持超低功耗，它在低频模式下使用一个32768Hz的晶体。

不需要任何电容因为在低频模式下内部集成了电容。

低频振荡器也支持高频模式和高速晶体，但连接时每端必须加电容。

电容的大小根据所接晶体频率的高低来选择。

低频振荡器在低频和高频模式下都可以选择从XIN引脚接入一个外部输入时钟信号，但所接频率必须根据所设定的工作模式来选择，并且OSCOFF位必须复位。

高频振荡器LFXT2：LFXT2作为MSP430的第二晶体振荡器。

与低频相比，其功耗更大。

高频晶体真大气外接在XIN2和XOUT2两个引脚，并且必须外接电容。

MSP430 单片机基础知识说明书

MSP430Microcontroller BasicsMSP430Microcontroller Basics John H.DaviesAMSTERDAM•BOSTON•HEIDELBERG•LONDONNEW YORK•OXFORD•PARIS•SAN DIEGOSAN FRANCISCO•SINGAPORE•SYDNEY•TOKYONewnes is an imprint of ElsevierNewnes is an imprint of Elsevier30Corporate Drive,Suite400,Burlington,MA01803,USALinacre House,Jordan Hill,Oxford OX28DP,UKCopyright©2008,Elsevier Ltd.All rights reserved.No part of this publication may be reproduced,stored in a retrieval system,or transmitted in any formor by any means,electronic,mechanical,photocopying,recording,or otherwise,without the prior written permission of the publisher.Permissions may be sought directly from Elsevier’s Science&Technology Rights Department in Oxford, UK:phone:(+44)1865843830,fax:(+44)1865853333,E-mail:************************.You may also complete your request online via the Elsevier homepage()by selecting “Support&Contact”then“Copyright and Permission”and then“Obtaining Permissions.”Recognizing the importance of preserving what has been written,Elsevier prints itsbooks on acid-free paper whenever possible.Library of Congress Cataloging-in-Publication DataApplication submittedBritish Library Cataloguing-in-Publication DataA catalogue record for this book is available from the British Library.ISBN:978-0-7506-8276-3For information on all Newnes publications,visit our Web site at:08091011121310987654321Printed in the United States of America“To Elizabeth.”ContentsPreface (xi)Chapter1:Embedded Electronic Systems and Microcontrollers (1)1.1What(and Where)Are Embedded Systems? (1)1.2Approaches to Embedded Systems (2)1.3Small Microcontrollers (5)1.4Anatomy of a Typical Small Microcontroller (8)1.5Memory (11)1.6Software (15)1.7Where Does the MSP430Fit? (16)Chapter2:The Texas Instruments MSP430 (21)2.1The Outside View—Pin-Out (21)2.2The Inside View—Functional Block Diagram (24)2.3Memory (25)2.4Central Processing Unit (30)2.5Memory-Mapped Input and Output (32)2.6Clock Generator (33)2.7Exceptions:Interrupts and Resets (36)2.8Where to Find Further Information (37)Chapter3:Development (43)3.1Development Environment (44)3.2The C Programming Language (46)3.3Assembly Language (55)3.4Access to the Microcontroller for Programming and Debugging (57)3.5Demonstration Boards (59)3.6Hardware (64)3.7Equipment (65)viii ContentsChapter4:A Simple Tour of the MSP430 (67)4.1First Program on a Conventional Desktop Computer (68)4.2Light LEDs in C (70)4.3Light LEDs in Assembly Language (72)4.4Read Input from a Switch (80)4.5Automatic Control:Flashing Light by Software Delay (91)4.6Automatic Control:Use of Subroutines (99)4.7Automatic Control:Flashing Light by Polling Timer_A (105)4.8Header Files and Issues Brushed under the Carpet (114)Chapter5:Architecture of the MSP430Processor (119)5.1Central Processing Unit (119)5.2Addressing Modes (125)5.3Constant Generator and Emulated Instructions (131)5.4Instruction Set (132)5.5Examples (146)5.6Reﬂections on the CPU and Instruction Set (153)5.7Resets (157)5.8Clock System (163)Chapter6:Functions,Interrupts,and Low-Power Modes (177)6.1Functions and Subroutines (178)6.2What Happens when a Subroutine Is Called? (178)6.3Storage for Local Variables (179)6.4Passing Parameters to a Subroutine and Returning a Result (183)6.5Mixing C and Assembly Language (185)6.6Interrupts (186)6.7What Happens when an Interrupt Is Requested? (188)6.8Interrupt Service Routines (190)6.9Issues Associated with Interrupts (196)6.10Low-Power Modes of Operation (198)Chapter7:Digital Input,Output,and Displays (207)7.1Digital Input and Output:Parallel Ports (208)7.2Digital Inputs (216)7.3Switch Debounce (225)7.4Digital Outputs (238)7.5Interface between3V and5V Systems (243)7.6Driving Heavier Loads (247)7.7Liquid Crystal Displays (252)7.8Driving an LCD from an MSP430x4xx (256)7.9Simple Applications of the LCD (264)Contents ix Chapter8:Timers (275)8.1Watchdog Timer (276)8.2Basic Timer1 (281)8.3Timer_A (287)8.4Measurement in the Capture Mode (300)8.5Output in the Continuous Mode (318)8.6Output in the Up Mode:Edge-Aligned Pulse-Width Modulation (330)8.7Output in the Up/Down Mode:Centered Pulse-Width Modulation (349)8.8Operation of Timer_A in the Sampling Mode (352)8.9Timer_B (353)8.10What Timer Where? (356)8.11Setting the Real-Time Clock:State Machines (357)Chapter9:Mixed-Signal Systems:Analog Input and Output (369)9.1Comparator_A (371)9.2Analog-to-Digital Conversion:General Issues (393)9.3Analog-to-Digital Conversion:Successive Approximation (402)9.4The ADC10Successive-Approximation ADC (407)9.5Basic Operation of the ADC10 (412)9.6More Advanced Operation of the ADC10 (424)9.7The ADC12Successive-Approximation ADC (432)9.8Analog-to-Digital Conversion:Sigma–Delta (438)9.9The SD16_A Sigma–Delta ADC (446)9.10Operation of SD16_A (459)9.11Signal Conditioning and Operational Ampliﬁers (475)9.12Digital-to-Analog Conversion (485)Chapter10:Communication (493)10.1Communication Peripherals in the MSP430 (495)10.2Serial Peripheral Interface (497)10.3SPI with the USI (504)10.4SPI with the USCI (513)10.5A Thermometer Using SPI in Mode3with the F2013as Master (520)10.6A Thermometer Using SPI in Mode0with the FG4618as Master (526)10.7Inter-integrated Circuit Bus (534)10.8A Simple I²C Master with the USCI_B0on a FG4618 (542)10.9A Simple I²C Slave with the USI on a F2013 (549)10.10State Machines for I²C Communication (559)10.11A Thermometer Using I²C with the F2013as Master (567)10.12Asynchronous Serial Communication (574)10.13Asynchronous Communication with the USCI_A (581)x Contents10.14A Software UART Using Timer_A (590)10.15Other Types of Communication (599)Chapter11:The Future:MSP430X (601)11.1Architecture of the MSP430X (601)11.2Instruction Set of the MSP430X (607)11.3Where Next? (614)11.4Conclusion (617)Appendix A:Kickstarting the MSP430 (619)A.1Introduction to EW430 (619)A.2Developing a Project in C (621)A.3Debugging with the Simulator (627)A.4Debugging with the Emulator (630)A.5Developing a Project in Assembly Language (633)A.6Tips for Using EW430 (636)A.7Tips for Speciﬁc Development Kits (640)Appendix B:Further Reading (645)Books and Articles (645)Newsletters,Magazines,and Journals (651)Index (655)Preface About a decade ago,I took over the teaching of aﬁrst-year,second-semester course on digital electronics.It coveredﬂip-ﬂops,counters,and state machines,all built fromsmall-scale integrated circuits.One of the projects at the end was to build a digital die.In many ways it was an excellent exercise because there were so many feasible ways in which it could be approached—simple counters,Johnson counters,or state machines.My concern was that it was very close to the project that I had experienced in myﬁrst course on digital electronics,which was back in the mid-1970s.The technology was close to the state of the art then,but was it still appropriate after so many years?Another feature of our course is that it is taken not only by electronic engineers but also by students from the science faculty,mostly computer scientists.I wanted these students to leave with a feeling for what can readily be done with modern programmable electronics insmaller-scale systems.I therefore replaced the material in the second half of the course with microcontrollers.(Do not worry,state machines were not abandoned—they are taught with hardware description languages in the context of programmable logic devices.) More recently,I thought that the time had come to review the choice of microcontroller. We traditionally used8-bit processors because modern devices have versatile peripherals and sophisticated embedded emulation and are quite powerful enough for most applications.Then the Texas Instruments MSP430caught my eye.A problem with8-bit microcontrollers is that8bits are too few for addresses,which are typically16bits long, and this means that data and addresses cannot be treated on an equal footing.In contrast, the MSP430has a uniform,16-bit architecture throughout:The address bus,data bus,and registers in the CPU are all16bits wide.The CPU has a modern design with plenty of registers,most of which can be used equally for data or addresses.It has a small instruction set with orthogonal addressing and an ingenious constant generator,which is used to emulate many operations that would otherwise need their own,distinct instructions.In many ways these features make the16-bit MSP430simpler than a typical8-bit processor.xii PrefaceOf course an elegant architecture does not generate many sales in the real world.More important are the range of peripherals and development tools.The MSP430offers the usual selection of peripherals plus some less common modules,including sigma–delta analog-to-digital converters and operational ampliﬁers.Some devices include hardware multipliers and digital-to-analog converters,which provide a complete signal chain(although,of course,Texas Instruments also offers an enormous range of digital signal processors).There is a choice of two free development environments(always an important considerationin education).One is IAR Embedded Workbench,which is available for a wide range of microcontrollers.Another,Code Composer Essentials,is produced by Texas Instruments itself.A third option is the GCC toolchain for MSP430at .I have not yet mentioned the major selling point of the MSP430,which is its low power consumption.Many microcontrollers are based on long-established designs withlow-power modes grafted onto them.This means that returning to full power from alow-power mode is often awkward and in some cases is virtually a reset operation.The MSP430is refreshingly different because it was designed from the outset for low-power operation.Entry to low-power modes and exit from them is straightforward,supported by a versatile clock system.For example,the clock module includes a digitally controlled oscillator that restarts at full speed from a low-power mode in less than1␮s in newer devices.In many applications the MSP430is put into a low-power mode,from which it is awakened by interrupts.These automatically restore full power for the interrupt service routine and return the processor to low power when it hasﬁnished.No extra code is needed for this:It is an intrinsic part of the interrupt mechanism.Most peripherals are designed for low power,although this can sometimes make them a little more complicated than would otherwise be necessary.The main point is that low-power modes are easy to use.The quality of the data sheets and user’s guides is another issue in education and those for the MSP430areﬁne.Unfortunately one item was missing in the area of documentation:a suitable textbook in English.I wrote this book toﬁll the gap.OutlineMost textbooks on microcontrollers follow one of two approaches.Theﬁrst is to present a sequence of projects to explore successive aspects of the device.I think that this works well for simpler architectures,notably the8-bit PICs,because it enables the reader to write functioning programs rapidly.This always feels good.Unfortunately I am not sure that it works as well for more advanced peripherals,which need considerable explanation before the reader can learn to use them fully.Preface xiii The alternative approach is to describe each module in the microcontroller fully and in turn,starting with the CPU and instruction set and working out to the peripherals.This makes for a well-organized reference book but can be tedious as a textbook.I tried to steer a course between these two.My inspiration is Kernighan and Ritchie’s The C Programming Language,which starts with a“Tutorial Introduction”before exploring the language systematically in subsequent chapters.I think that it takes rather more introduction to a microcontroller so the“simple tour,”which is my equivalent to the tutorial,does not start until Chapter4.Before that,theﬁrst chapter contains a general introduction to embedded systems and microcontrollers.This sets the scene for Chapter2, which focuses on the MSP430and gives a broad view of its features.I include a chapter on hardware and software for developing applications,which I hope will be particularly useful for readers who are new to microcontrollers.It also contains some reminders of features of the C language that are more prominent in programs for microcontrollers than desktop computers—bitﬁelds for instance.This leads into the tour,which runs through some simple programs to illustrate input and output,the inevitableﬂashing LEDs,and an introduction to one of the timers(the MSP430has several).The remainder of the book provides a more systematic description of the MSP430.I start with the CPU and instruction set,and show how the constant generator is used to provide further“emulated”instructions.The clock system is also described in this chapter.It is followed by Chapter6on subroutines,interrupts,and low-power modes.I already mentioned that a major feature of the MSP430is the way in which low-power modes are handled automatically when interrupts are serviced.Subsequent chapters are concerned with the most widely used peripherals.Chapter7on digital input and output starts with the usual parallel ports and goes on to describe liquid crystal displays,which many MSP430s can drive directly.There is a wide selection of timers in the MSP430,which are covered in the next chapter.This is followed by a lengthy chapter on analog input and output.The MSP430offers many peripherals for analog-to-digital conversion,ranging from a simple comparator to a16-bit sigma–delta module.I do not think that you can use any of these without some understanding of their characteristics,which explains the length of this chapter.Some MSP430s include operational ampliﬁers and digital-to-analog converters,which I described brieﬂy.Theﬁnal long chapter is on communication.I cover only three types of communication—serial peripheral interface,inter-integrated circuit bus,and asynchronous—but there are several peripherals for these in different variants of the MSP430,so there is a lot to explain.xiv PrefaceThe very last chapter provides an introduction to the MSP430X,an extended architecture with a20-bit address bus that can handle1MB of memory.There is also an appendix to take the reader through the steps of editing,building,and debugging theﬁrst project, which can sometimes be a frustrating experience.Iﬁnd it annoying when books contain large chunks copied directly from data sheets and have tried to avoid this.You cannot hope to program a microcontroller without the data sheet at your side.Having said that,I start by going through each bit of the registers that control the peripherals used for the early programs.The idea is to explain how a typical peripheral is conﬁgured.After that I become more selective and concentrate on the overall function of the peripheral ually I pick out a few details that I think need extra explanation but skip the more mundane aspects.They are in the example programs inany case.I include links to many of Texas Instruments’application notes because I can see no point in repeating material that has been thoroughly explained already.Iﬁnd that many students are strangely reluctant to use this valuable resource.There are a few reminders about code examples for the same reason.C or Assembly Language?Most small microcontrollers are now programmed using the C language so the question might seem redundant.In fact often columns in newletters on embedded systems often carry articles with titles such as“Is Assembly Language Dead?”However,the answer seems to be clearly that assembly language is not dead for small microcontrollers,such as the MSP430.Most code is written in C but you may occasionally need to write a subroutine in assembly language to perform an operation that cannot be written out directly in C.Two examples are operations that require bitwise rotations rather than shifts and calculations that can be done more efﬁciently by exploiting special instructions of the CPU,such as binary-coded decimal arithmetic.Intrinsic functions often avoid the need for assembly language but not always.More important,assembly language is often needed for debugging and this is the most compelling reason for describing it in a textbook.Small microcontrollers typically spend much of their time interacting with hardware by manipulating the registers that control the peripherals.Debugging may require stepping through lines of assembly language to check each step.You have to look at the manual to check the details of each instruction,but it helps to have a general idea of how the assembly language works.Preface xv From a pedagogical point of view,assembly language is useful to illustrate the architecture of the processor.In fact the MSP430is simple enough that you can explore the thinking behind the design of the instruction set.Besides,assembly language can be fun(in small doses).My approach is to develop theﬁrst,simple programs in Chapter4using both C and assembly language to show the relation between them.However,C dominates by the end of the chapter.Assembly language makes a strong showing in the next two chapters,which cover architecture,subroutines,and interrupts,including a section on mixing C and assembly language.Almost all remaining programs are in C,with assembly language reappearing only brieﬂy for a function to convert numbers to binary-coded decimal.The listings in the text are read directly from the programs that I tested.Companion Web SitePlease visit the companion Web site for this book at/companions/9780750682763and download the programs used as examples in the book.These programs were read into the text of the book from the workspaces that I used for testing,which means that the downloadedﬁles should match the book perfectly.Links are also provided for data sheets,user’s guides,and development tools.Solutions to the odd-numbered examples are freely available on the companion Web site but the remaining solutions are offered only to instructors. AcknowledgmentsIt is a pleasure to thank numerous people who have helped me in various ways to write this book.Many are from Texas Instruments:Bonnie Baker,Jacob Borgeson,Andreas Dannenberg,Colin Garlick,Thomas Mitnacht,and Robert Owen.I am particularly grateful to Adrian Valenzuela for his comments on theﬁnal draft.Several engineers from other companies were kind enough to provide advice and assistance:Edward Gibbins and Steve Duckworth from IAR,Tom Baugh of SoftBaugh,Paul Curtis of Rowley Associates,David Dyer of Ericsson and Fernando Rodriguez while he was at Texas Instruments.Finally,I am grateful to colleagues and students at Glasgow University,from whom I have learnt an enormous amount over the years.I’d like to thank Fernando Rodriguez(not the same person who was at Texas Instruments)and David Muir in particular,with both of whom I have run a wide range of projects on embedded systems and microcontrollers—from tutor boxes withﬂip-ﬂops to the electronic systems of a Formula Student racing car.John Davies,Milngavie。

MSP430单片机入门例程

MSP430单片机入门例程MSP430单片机是一款低功耗、高性能的16位单片机，广泛应用于各种嵌入式系统。

下面是一个简单的MSP430单片机入门例程，可以让大家初步了解MSP430单片机的基本使用方法。

所需材料：1、MSP430单片机开发板2、MSP430单片机编译器3、MSP430单片机调试器4、电脑和相关软件步骤：1、安装MSP430单片机编译器首先需要安装MSP430单片机的编译器，该编译器可以将C语言代码编译成MSP430单片机可以执行的机器码。

在安装编译器时，需要选择与您的单片机型号匹配的编译器。

2、编写程序下面是一个简单的MSP430单片机程序，可以让LED灯闪烁：c本文include <msp430.h>int main(void)本文P1DIR |= 0x01; //设置P1.0为输出while(1){P1OUT ^= 0x01; //反转P1.0的状态，LED闪烁__delay_cycles(); //延时一段时间，控制闪烁频率}本文上述程序中，首先定义了P1DIR寄存器，将P1.0设置为输出。

然后进入一个无限循环，在循环中反转P1.0的状态，使LED闪烁。

使用__delay_cycles()函数实现延时，控制LED闪烁频率。

3、编译程序使用MSP430单片机编译器将程序编译成机器码，生成可执行文件。

在编译时，需要注意选择正确的编译器选项和单片机型号。

4、调试程序使用MSP430单片机调试器将可执行文件下载到单片机中，并使用调试器进行调试。

在调试时，可以观察单片机的输出口状态和LED灯的闪烁情况，确保程序正常运行。

随着嵌入式系统的发展，MSP430单片机作为一种低功耗、高性能的微控制器，在各种应用领域中得到了广泛的应用。

为了更好地理解和应用MSP430单片机，我在学习过程中积累了一些经验，现在分享给大家。

MSP430单片机是一种超低功耗的微控制器，由德州仪器（Texas Instruments）推出。

MSP430F21X1_中文资料

-MCLK 停止, 若 DCO 没有被使用,DCO 发生器关闭
● 低功耗模式 2 LPM2
-CPU 关闭
-MCLK 和 SMCLK 停止.
-பைடு நூலகம்CLK 保持活动
-DCO 发生器保持活动
● 低功耗模式 3 LPM3
-CPU 关闭
-MCLK 和 SMCLK 停止.
-DCO 发生器停止
-ACLK 保持活动
● 低功耗模式 4 LPM4
P2.2/CAOUT/ CA0/CA4
P2.3/CA0/CA1
P2.4/CA1/CA2 P2.5/CA5
XIN/P2.6/CA6
XOUT/P2.7/CA7 RST/NMI TEST Vcc Vss QFN Pad
引脚 DW,PW,DGV
引脚号 13 14
15
16
17
18
19
20 8 9
10
11
12 3 6
通用寄存器
R14
寻址方式见表 2
通用寄存器
R15
双操作数,源-目的单操作数相对转移,条件或无条件
表 1 指令格式 e.g ADD R4, R5 e.g CALL R8 e.g JNE
R4+R5→R5 PC→(TOS),R8→PC Z=0 时跳转
表 2 寻址方式
寻址方式 S D
语法
示例
说明
寄存器寻址 ● ●
I/O 片编程和测试时作数据和时钟输入端通用数字 I/O 口/定时器 A 比较方式 OUT2 输出/在芯
I/O 片编程和测试时作数据输出/输入端 I/O 通用数字 I/O 口/ACLK 输出端/比较器 A+ CA2 输入
通用数字 I/O 口/定时器 A INCLK 时钟输入/比较器 I/O A+ CA3 输入

由SA51和MSP430F1121组成的驱动控制系统

由SA51和MSP430F1121组成的驱动控制系统由SA51和MSP430F1121组成的驱动控制系统摘要：介绍了脉宽调制功率放大器SA51和16位单片机MSP430F1121的基本特性，给出了由它们组成的两片式的电机转速控制系统的简单应用方法和电路。

关键词：SA51MSP430F1121脉宽调制DCO捕获现在的电子设备往往要求体积小、重量轻、效率高，通常在苛刻的环境条件下，尤其在军工产品中，设计者非常希望使用单片或双片系统以尽可能地减少器件数量。

SA51和MSP430F1121以其自身的高集成度和强大功能成为组成双片驱动控制系统的理想选择方案。

该方案可广泛应用在对电机、电磁阀的控制系统中。

1SA51简介1.1SA51的特点参数SA51是由美国APEX公司生产的脉宽调制功率放大器，它能为负载提供5A的连续电流。

该全桥放大器能在很宽的供电电源范围内工作，对桥上臂和下臂开关的驱动和控制电路混合集成在器件内，用户只需提供与TTL电平兼容的PWM信号就可进行四象限模式的幅值和方向同时控制，而且与数字控制器的接口非常简单。

SA51的内部电路可提供适当的死区时间间隔以保护桥的四个N沟道场效应管，场效应管的导通电阻很低，而开关速度却很高（最高可达500kHz），效率可达97％。

对于空闲/休眠模式或错误保护，SA51提供有与TTL兼容的禁止管脚来关断四个场效应管。

SA51采用8脚TO-3封装，可安装在小型散热器上或直接焊装在印制电路板上。

SA51的电气极限参数如下：*供电电压+Vs:80V；*峰值输出电流：7A；*逻辑供电电压Vcc:16V；*内部功耗：120W；*管脚焊接温度（10s）：300℃；*环境温度：150℃；*贮存温度：-65～150℃；*使用温度：-65～125℃；**输入端输入电压：0～Vcc；*禁止端输入电压：0～Vcc。

1.2SA51的结构功能SA51放大器的原理框图如图1所示。

现将各管脚的功能描述如下：Vcc：内部逻辑电路和MOSFETS上臂和下臂驱动器的低压电源；Vs：H桥供电电源，MOSFETS从这个电源端获得输出电流，该脚电压范围为Vcc～+80V,MOSFETS标称值为100V。

MSP430讲义(南京航空航天大学)430单片机的简介

超低功耗微控制器MSP430南京航空航天大学魏小龙2002年9月修改F40xi n de s i g n x31xLCD92x32xLCD84ADC14x33xLCD120Timer_A USART MPY8-bit T/C19961999200020022001x11x1Comp_AX12x USARTi n de s i g n F13xTimer_B ADC12USART Comp_AF14xTimer_B ADC122 USART MPY Comp_ANewNewF41xF42xi n de s i g n F43X/F44XM S P430南京航空航天大学魏小龙2002年9月修改1 个晶振, 1 个DCO, 适应不同频率需要2 个晶振, 1 个DCO, 适应不同频率需要南京航空航天大学魏小龙2002年9月修改MSP430 performs 16 bit instead of 8 bit 4 times faster than a typical 8 bit µC !!MSP430 performs 16 bit instead of 8 bit 4 times faster than a typical 8 bit µC !!南京航空航天大学魏小龙2002年9月修改南京航空航天大学魏小龙2002年9月修改南京航空航天大学南京航空航天大学魏小龙2002年自动扫描桶型缓存采样/转换控制片内温度传感器可编程参考源选择南京航空航天大学魏小龙2002年9南京航空航天大学魏小龙2002年9月修改例程简介Dis6.s43Key.cKey.s43r电源的高效率Ÿ电池缩减/ 电池寿命延长Ÿ电源电路简化/ 可远程供电r硬件简化Ÿ外部元件极少Ÿ集成实时钟Ÿ集成LCD 驱动电路Ÿ集成ADCr加速产品开发Ÿ用Flash 或OTP 型可快速制作样机Ÿ用Flash 型可作现场更新Ÿ容易学习和设计程序Ÿ代码效率高r廉价的微控制器MSP430和开发工具FET南京航空航天大学魏小龙2002年9月修改/sc/docs/products/micro/msp430器件厂家网站中国代理网站小龙微控有大量的430应用与例程/sc/docs/products/micro/msp430器件厂家网站中国代理网站小龙微控有大量的430应用与例程。

MSP430 入门及常见问题解答

MSP430 入门及常见问题解答MSP430 入门及常见问题解答Ver 0.1 - Jeffrey1．MSP430 入门 2．如何为我的应用选择最合适的 MSP430 芯片？ 3．与 MSP430 的引导加载程序通信的开发工具 4．MSP430 需配合何种晶振工作？ 5．使用哪款 MSP430 编程器可以用来烧断 JTAG 熔丝？ 6．要实现 MSP430 编程，应如何连接 JTAG？ 7．是否有关于 MSP430 的讨论小组或论坛? 8．使用 FET 时需要哪几根 MSP430 JTAG 信号线？ 9．MSP430 的 I/O 口的灌出和吸入电流能力 10．MSP430 仿真器（FET）的常见问题 11．通过启动加载程序(Bootstrap Loader，以下简称 BSL)为 MSP430 编程 12．MSP430 I2C 模块的速度 13．MSP430 的 USART 的硬件配置 14．MSP430 Flash 数据保持率 15．MSP430 SPI 或 UART 的速度 16．MSP430 Flash 的写入/擦除周期数 17．MSP430 ADC12 模块的通道数 18．MSP430 哪些端口的引脚具有中断能力? 19．MSP430 的全部操作码（记忆规则）列表 20．怎样降低 MSP430 的功耗? 21．MSP430 开发工具支持哪些操作系统? 22．MSP430 DCO 的频率会抖动吗? 23．MSP430 的 Flash 块写(BLKWRT)模式的使用 24．MSP430 外部中断输入所需的最小脉冲宽度 25．MSP430 的嵌套中断 26．MSP430 端口中断类型 27．除 32.768kHz 晶振，MSP430 还可以配合多高频率的晶振工作？ 28．MSP430 的静电效应值 29．批量生产时对 Flash 编程的方法。

30．MSP430 在上电清除（PUC）和上电复位（ POR）时初始状态是什么? 31．MSP430 的操作和储存温度范围 32．MSP430 数据存储器的扩展 33．MSP430 的指令周期和长度 34．MSP430 的静电保护二极管 35．在哪能够找到一个 BSDL 文件来建立 JTAG 链 36． IAR Embedded Workbench 提示的错误信息： “unable to open file `cl430`” 37． USART 模块同时工作在 UART 和 SPI 模使式 38．系统内部 Flash 的编程及作为 EEPROM 的使用 39．多个外部中断同时发生的处理 40．FET 支持的芯片封装类型 41．MSP430F11x1 和 MSP430F11x1A 的区别 42．使用两个管脚进行 Flash 升级 43．MSP430x4xx 低功耗晶振的配置 44．哪一款编程器可以将用户的程序下载到 Flash 中？ 45．使用 MSP430 串口编程工具 MSP-PRGS430 的问题 46．在 MSP430 BSL 通信中 80h 的使用 47．MSP430 ADC12 模块的信息源 48．使用 MSP430 Basic Clock 模块中稳定 DCO 频率 49．MSP430 的 I/O 引脚和 JTAG 引脚的复用 50．MSP430 ADC12 的速度 51．MSP430 ADC12 的基准电压引脚的连接 52．MSP430 ADC12 模块的外部电容需求 53．在哪里可以买到 MSP430 的插座 54．MSP430 工作在 8MHz 时推荐的工作电压 55．查找应用报告中的参考文件1．MSP430 的入门．要获取关于 MSP430 产品系列的完整信息，请参看 MSP430 的主页在 MSP430 主页中，有相关的链接：所有的文档、应用报告、可下载的源代码示例、开发人员信息。

低功耗微控制器MSP430×11×1的应用

低功耗微控制器MSP430×11×1的应用
胡大友
【期刊名称】《世界电子元器件》
【年(卷),期】2001(000)007
【摘要】@@ MSP430系列是德州仪器公司推出的超低功耗混合信号微控制器家族.这些微控制器可用电池作电源并长期工作的场合,及捕捉模拟信号的传感系统.【总页数】2页(P71-72)
【作者】胡大友
【作者单位】无
【正文语种】中文
【中图分类】TM571.6
【相关文献】
1.MSP430微控制器讲座(一)如何选择一款超低功耗微控制器 [J], 雷奥
2.MSP430微控制器讲座(二)基于Slope A/D实现的超低功耗温度控制仪 [J], 雷奥
3.德州仪器全新MSP430™FRAM微控制器开创超低功耗新时代 [J], 消息德州仪器半导体技术上海有限公司
4.新型超低功耗MSP430微控制器平台 [J],
5.64款超低功耗MSP430 Value Line微控制器 [J],
因版权原因，仅展示原文概要，查看原文内容请购买。

MSP430寄存器配置指导

2-时钟模块
微控网为你准备的 MSP430F 单片机入门必修课
微控网
MSP430F1XX 系列时钟模块图时基模块结构如上图:
MSP430 系列单片机基础时钟主要是由低频晶体振荡器,高频晶体振荡器，数字控制振荡器(DCO)，锁频环(FLL)及 FLL+等模块构成。由于 430 系列单片机中的型号不同，而时钟模块也将有所不同。虽然不同型号的单片机的时基模块有所不同，但这些模块产生出来的结果是相同的.在 MSP430F13、14 中是有 TX2 振荡器的，而 MSP430F11X,F11X1 中是用 LFXT1CLK 来代替 XT2CLK 时钟信号的.在时钟模块中有 3 个(对于 F13,F14)时钟信号源(或 2 个时钟信号源，对于 F11X、F11X1):
BCSCTL1 基本时钟系统控制寄存器 1
7
6
5
4
XT2OFF TXS DIVA.1 DIVA.0
3 XT5V
2
1
0
Rsel.2 Resl.1 Resl.0
XT2OFF 控制 XT2 振荡器的开启与关闭。 TX2OFF=0，XT2 振荡器开启。 TX2OFF=1，TX2 振荡器关闭（默认为 TX2 关闭）
微控网
句：_BIS_SR(LMP3_bits)和_BIC_SR(LPM3 bits) LPM3 和 LPM3_EXIT
它们的定义是一样的。这里说明在 C 语言环境中有些定义的函数是不可见的。但你可以从 in430.h 文件看到它们的定义。
DCOCTL DCO 控制寄存器
cctlx捕获比较控制寄存器151413121110ccis1scssccicapoutmodxcciexccioutcovccifxtimera有多个捕获比较模块每个模块都有自己的控制寄存器cctlxcaptmod10选择捕获模式00禁止捕获模式01上升沿捕获10下降沿捕获11上升沿与下降沿都捕获ccisi0在捕获模式中用来定提供捕获事件的输入端00选择ccixa01选择ccixb10选择gnd11选择vccscs选择捕获信号与定时器时钟同步异步关系0异步捕获1同步捕获异步捕获模式允许在请求时立即将ccifg置位和捕获定时器值适用于捕获信号的周期远大于定时器时钟周期的情况

基于MSP430F1101的智能学习型红外遥控器的设计

基于ＭＳＰ４３０Ｆ１１０１的智能学习型红外遥控器的设计作者：宋祖辉孙富康戚鹏来源：《电脑知识与技术·学术交流》2008年第23期摘要：介绍了一款基于MSP430系列单片机的智能学习型红外遥控器的设计方案，给出了该系统的硬件结构和软件组成。

在人们日常生活和工作中，这款红外遥控器可以通过对任何红外遥控设备编码的学习、分析和记忆，以实现多个电器的统一管理。

关键词：红外遥控器；智能学习；单片机中图分类号：TN219文献标识码：A文章编号：1009-3044(2008)23-1016-03Design of Intelligent-learning Infrared Remote Controller Based on MSP430F1101SONG Zhu-hui1, SUN Fu-kang2, QI Peng2(1.Anhui Personal Test Academy, Hefei 230022, China;2.Anhui Institute of Architecture and Industry,Hefei 230601, China)Abstract: This paper introduces design of intelligent-learning infrared remote controller based on MSP430 microcontroller, and describes hardware structure and software of system. In daily living, through learning, analyzing, and storing infrared remote controller code, intelligent-learning infrared remote controller can archive to control several equipments.Key words: infrared remote controller; intelligent-learning; microcontroller1 引言在现代化的社会里，随着电子技术的日新月异，带有红外线遥控器的电气化设备越来越普及。

MSP430F1121A中文资料

元器件交易网IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvements, and other changes to its products and services at any time and to discontinueany product or service without notice. Customers should obtain the latest relevant information before placingorders and should verify that such information is current and complete. All products are sold subject to TI’s termsand conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TIdeems necessary to support this warranty. Except where mandated by government requirements, testing of allparameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible fortheir products and applications using TI components. T o minimize the risks associated with customer productsand applications, customers should provide adequate design and operating safeguards.TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or processin which TI products or services are used. Information published by TI regarding third-party products or servicesdoes not constitute a license from TI to use such products or services or a warranty or endorsement thereof.Use of such information may require a license from a third party under the patents or other intellectual propertyof the third party, or a license from TI under the patents or other intellectual property of TI.Reproduction of information in TI data books or data sheets is permissible only if reproduction is withoutalteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproductionof this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable forsuch altered documentation.Resale of TI products or services with statements different from or beyond the parameters stated by TI for thatproduct or service voids all express and any implied warranties for the associated TI product or service andis an unfair and deceptive business practice. TI is not responsible or liable for any such statements.Following are URLs where you can obtain information on other Texas Instruments products and applicationsolutions:Products ApplicationsAmplifiers Audio /audioData Converters Automotive /automotiveDSP Broadband /broadbandInterface Digital Control /digitalcontrolLogic Military /militaryPower Mgmt Optical Networking /opticalnetworkMicrocontrollers Security /securityTelephony /telephonyVideo & Imaging /videoWireless /wirelessMailing Address:Texas InstrumentsPost Office Box 655303 Dallas, Texas 75265Copyright 2004, Texas Instruments Incorporated。

使用MSP430F1121中断必须要注意的问题

使用MSP430F1121中断必须要注意的问题MSP430F1121（下面简称F1121）是TI公司新近推出的一款廉价的20引脚低功耗16位Flash单片机。

它所具备的多种中断功能使其应用灵活，并适用于各种不同的应用领域。

不过，我们在应用开发中发现，厂家提供的技术文件虽然不少，但是对有关中断的说明却不那么详尽，这就给应用开发造成了诸多不便。

为此，我们专门用程序进行了一些试验，并从中明确了一些问题。

在这里，我们就把这些问题说明一下，供大家参考。

在说明这些问题之前，有必要先来看一下F1121的中断，如表1所列。

表1 F1121中断F1121的各个中断都有对应的中断向量和中断优先级，通常被分为三类：系统复位、（非）屏蔽中断和可屏蔽中断。

此外，F1121的各中断又分单源中断和多源中断，对应的中断标志称为单源中断标志和多源中断标志。

一、系统复位从形式上讲，可以把系统复位看成一种中断，但这是一种特殊的中断，虽然它也有中断向量（复位向量）和中断优先级，但与通常意义的中断有明显的区别：系统复位导致系统进入初始状态，并迫使程序从头开始运行。

1. 导致系统复位的情况及POR和PUC信号有4种情况能够导致系统复位，并且产生POR（Power-On Reset）和PUC（Power-Up Clear）信号：· 上电复位——产生POR和PUC；· RST复位（外部复位信号复位）——产生POR和PUC；· 看门狗中断——仅产生PUC；· 关键码错误中断——仅产生PUC。

POR和PUC都是系统复位时产生的芯片内部信号，负责对寄存器进行初始化。

在F1121提供的技术文件中，由PUC信号负责初始化的那些寄存器位，其初始状态用“ 0”和“ 1”来表示，而由POR信号负责的，用“ （0）”和“ （1）”来表示。

用MSP430F1121构成的电子时钟

用MSP430F1121构成的电子时钟赵秋【摘要】介绍一种TI公司推出的MSP430F1121单片机，利用它自带的定时器得到固定的定时值。

MSP430F1121是TI的传统产品，是高精度、低功耗为一体的集成。

由于MSP430F1121具有可编程功能、纤小的封装以及极大的温度范围，因而可广泛应用于各种各样的应用之中，尤其适合用它组成超小型定时测量装置。

【期刊名称】《电子制作》【年(卷),期】2015(000)008【总页数】3页(P17-18,29)【关键词】MSP430F1121;定时器;低功耗【作者】赵秋【作者单位】南京工业职业技术学院江苏南京 210023【正文语种】中文德州仪器(TI)推出的MSP430F1XX系列单片机采用1.8V～3.6V电压供电，是一种超低功耗单片机，具有16位的RSIC结构，可以在很多的产品应用中提供最佳的解决方案，而通过采用不同的时钟源工作可以使器件满足不同的功耗要求，下面以其中的MSP430F1121为例介绍如何构建一个六位时钟系统。

电路如图1所示，具有4K Flash ROM的MSP430F1121作为电路的核心，它采用20-DW封装，外接32Khz的晶振，不需要负载电容。

显示模块由六位共阴数码管LED1-LED6组成，显示格式是88：时 88：分 88秒。

段驱动选用74LS06,位驱动选用达林顿集成电路ULN2003。

除了提供其它电路5V电压外，我们在此处MSP430F1121采用3.3V供电，须采用TI公司的专用电压芯片TPS76033得到3.3V，此芯片体积很小，可以节约PCB板的面积，复位电路采用RC电路。

整个程序的核心部分是利用定时器得到0.5秒的定时，MSP430支持标准的C语言，在此基础上进行了扩展，以下就是用C写的部分关键程序：2.1 部分全局变量定义#include <msp430x11x1.h> // MSP43011F21的头文件unsigned char dispbuf[7];//6位时、分、秒显示值存放阵列，一位标志位2.2 利用定时器A产生0.5s 定时void Init_TimerA(void){TACTL = TASSEL1 + TACLR; //选择SMCLK;清除TAR,表示从下一时钟开始计数CCTL0=CCIE; //TACCR0中断允许CCR0=65535; //时钟源DCO近似是800K，被8分频是100K,50000是0.5秒的近似值，此处选择65535，实际调试时可以通过调节此数据使和标准时钟对准。

MSP430单片机型号资料

MSP430 单片机型号资料
MSP430 单片机的发展
德州仪器1996 年到2000 年初，先后推出了31x、32x、33x 等几个系列，这些系列具有LCD 驱动模块，对提高系统的集成度较有利。

每一系列有
ROM 型(C)、OTP 型(P)、和EPROM 型(E)等芯片。

EPROM 型的价格昂贵，运行环境温度范围窄，主要用于样机开发。

这也表明了这几个系列的开
发模式，即：用户可以用EPROM 型开发样机;用OTP 型进行小批量生产; 而ROM 型适应大批量生产的产品。

2000 年推出了11x/11x1 系列。

这个系列采用20 脚封装，内存容量、片上功能和I/O 引脚数比较少，但是价格比较低廉。

这个时期的MPS430 已经显露出了它的特低功耗等的一系列技术特点，但
也有不尽如人意之处。

它的许多重要特性如：片内串行通信接口、硬件乘法器、足够的I/O 引脚等，只有33x 系列才具备。

33x 系列价格较高，比较适合于较为复杂的应用系统。

当用户设计需要更多考虑成本时，33x 并不一定
是最适合的。

而片内高精度A/D 转换器又只有32x 系列才有。

2000 年7 月推出了F13x/F14x 系列，在2001 年7 月到2002 年又相继推出F41x、F43x、F44x。

这些全部是Flash 型单片机。

F41x 系列单片机有48 个I/O 口，96 段LCD 驱动。

F43x、F44x 系列是在。

msp430单片机入门知识

#define BASICTIMER_VECTOR (0*2u) /*0xFFE0 基础定时器）
PORT2_VECTOR (1 * 2u) /* 0xFFE2 P2 */ PORT1_VECTOR (4 * 2u) /* 0xFFE8 P1 */ TIMERA1_VECTOR (5 * 2u) /* 0xFFEA Timer A CCR1/2*/ TIMERA0_VECTOR (6 * 2u) /* 0xFFEC Timer A CCR0 */ USART0TX_VECTOR (8 * 2u) /* 0xFFF0 串口发送 */ USART0RX_VECTOR (9 * 2u) /* 0xFFF2 串口接收*/ WDT_VECTOR (10 * 2u) /* 0xFFF4 Watchdog Timer */ SD16_VECTOR (12 * 2u) /* 0xFFF8 16位ADC */ NMI_VECTOR (14 * 2u) /* 0xFFFC Non-maskable */ RESET_VECTOR (15 * 2u) /* 0xFFFE Reset */
20
中断的具体过程
1. 事先将中断服务程序入口地址装入中断向量表。
2. 中断发生后，如果中断被允许（可屏蔽中断），CPU将当前程序地址和CPU状态寄存器SR压入堆栈。
3. 跳转到中断服务程序入口，备份寄存器入堆栈。
4. 开始执行中断服务程序。 5. 退出中断前，恢复寄存器。CPU取回SR
寄存器，跳转回中断前主程序地址。
6
MSP430FE425A资源 1. 8M/s处理速度 2. 512RAM（数据）+16KB Flash（程序代码） 3. 内置Flash控制器，剩余Flash可存数据。 4. 内置时钟管理单元，可内部倍频 5. 3路同步采样、差分输入、32倍程控增益放大器的16位ADC 6. 温度传感器 7. 1.2V基准源和输出缓冲器 8. 128段LCD驱动器 9. 增强UART串口 10. 看门狗 11. BasicTimer定时器 12. 16位TimeA定时器，3路捕获和2路PWM 13. 内置BOR复位电路 14. 16个双向可中断IO口 15. 内置电能计量模块 16. 后缀带A的，比如FE425A带硬件乘法器

超低功耗MSP430F1121的斜率A／D应用与设计

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Ｄ转换；
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１ＭＳ４Ｏ１１简介Ｐ３Ｆｌ２
ＭＳ４０Ｉ２Ｐ３Ｆ１１是ＴＩ司推出的业界极低功公
耗系列单片机之一，＿～３儡建９）东州，滨程学息通工学硕研生要究向纤信数薯霁－－．山德＾尔工大信与信程脘士究，研方：通和字１２（８男１０２７哈主光
完成Ｄ转换常常需要专用的Ｄ转换芯片，而在小型测控系统中，由于Ｄ价格颇贵，价比性就要下降，况且在一般小型系统中精度要求低，没有必要使用昂贵的Ｄ，完全可以利用单片机的