三键电容式触控芯片XC2863 Datasheet
TTY6751 8 KEYS 电容式触摸按键 规格书说明书
TTY6751 8 KEYS 电容式触摸按键规格书 Ver1.2●产品描述 (2)●产品特色 (2)●产品应用 (2)●封装脚位图 (3)●脚位定义 (4)●AC / DC Characteristics (5)1Absolutely max. Ratings (5)2 D.C. Characteristics (5)3 A.C. Characteristics (5)●输出指示 (6)●功能描述 (7)●注意事项 (8)●应用线路图 (10)●封装说明 (12)●订购信息 (13)●修订记录 (13)●产品描述提供8个触摸感应按键，二进制(BCD)编码输出，具有一个按键承认输出的显示，按键后的数据会维持到下次按键，可先判断按键承认的状态。
提供低功耗模式，可使用于电池应用的产品。
对于防水和抗干扰方面有很优异的表现!●产品特色工作电压范围：2.7V – 5.5V工作电流： 1.8mA (正常模式)；10 uA (休眠模式) @3.3V8个触摸感应按键持续无按键4秒，进入休眠模式提供二进制(BCD)编码直接输出接口(上电D2~D0/111)按键后离开，输出状态会维持到下次按键才会改变。
提供按键承认有效输出，当有按键时输出低电平，无按键为高电平。
可以经由调整CAP脚的外接电容，调整灵敏度，电容越大灵敏度越高具有防水及水漫成片水珠覆盖在触摸按键面板，按键仍可有效判别●产品应用各种大小家电，娱乐产品封装脚位图TTP272-AOBN 16-SOP-ATTP272-AOBN 16-SOP-A脚位定义SOP16 QFN16 脚位名称类型功能描述1 3 K5 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力2 4 K4 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力3 5 K3 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力4 6 K2 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力5 7 K1 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力6 8 K0 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力7 9 CAP -- 电容须使用 NPO 材质电容或 X7R 材质电容使用范围: 6800pF-33000pF，电容越大灵敏度越高8 10 VSS P 电源负端9 11 OUT_FLAG O 按键承认输出，低电平有效10 12 D0 O 二进制比特码输出D011 13 NC P 空接12 14 VDD P 电源正端13 15 D1 O 二进制比特码输出D114 16 D2 O 二进制比特码输出D215 1 K7 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力16 2 K6 I 触摸按键脚,串接100-1000欧姆，能提高抗干扰和提高抗静电能力I:输入O:输出P:电源AC / DC Characteristics 12 D.C. Characteristics3 A.C. Characteristics输出指示提供 8 keys 电容触摸按键, 输出是采用二进制(BCD)编码输出, 其关系如下表: 按键有按/没按D2 D1 D0 备注上电 1 1 1 1K0 触摸0 0 0 0离开 1 0 00K1 触摸0 0 0 1离开 1 0 01K2 触摸0 0 1 0离开 1 0 10K3 触摸0 0 1 1离开 1 0 11K4 触摸0 1 0 0离开 1 1 00K5 触摸0 1 0 1离开 1 1 01K6 触摸0 1 1 0离开 1 1 10K7 触摸0 1 1 1离开 1 1 11功能描述1TTY6751于手指按压触摸盘，在50ms内输出对应按键的状态。
LT6101 touch key 触摸按键IC datasheet
低功耗触摸按键控制芯片 LT6101C 概述LT6101是一款具有极低功耗的自电容式触摸按键控制芯片。
该芯片采用本公司专利的电容式触摸按键信息检测技术，能够实现非常低的动态功耗和高的触摸信号检测精度，适合于对功耗要求苛刻的电子产品触摸按键应用。
LT6101可以作为外部控制器的从机运行，也可以作为主机独立运行。
作为从机时，芯片在SPI时钟信号同步下工作，以正常按键刷新速率，典型工作电流仅16uA。
作为主机独立运行时，LT6101在内部振荡器产生的时钟信号（也可选择使用外部时钟信号）同步下工作，循环查询各个触摸按键的状态，并在发现了指定触摸事件后，以中断方式激活外部控制器。
主机模式下，使用内部振荡器产生的时钟工作，典型芯片工作电流仅4.5uA；当使用外部时钟输入时，典型工作电流仅1.3uA。
LT6101的主机运行模式，使得触摸按键的查询无需外部控制器的干预，特定触摸事件的识别在芯片内部自动完成，无触摸事件时，外部控制器可进入深度休眠，从而大大节省整个系统功耗。
LT6101内部集成11位逐次逼近型电容量化电路，可以检测到最小9fF触摸按键电容变化量。
芯片支持直接数字化的电容量化结果输出和是否触摸的判定结果输出，主机模式下，支持内部按键信号多次测量滤波。
LT6101支持多种触摸模式中断信号产生，并可灵活调节按键触发的时间长度。
LT6101同时支持最多4按键二进制密码图形中断触发，可以大大减小系统误触发的概率。
LT6101采用QFNWB5X5-32L和QFNWB3X3-16L两种封装。
特点z极低的待机和工作电流（从机模式典型工作电流16uA，主机模式典型工作电流4.5uA和1.3uA）z同时支持主机工作模式和从机工作模式z极高的信号检测精度（最小9fF自电容变化量分辨率）z内置11位逐次逼近型电容量化器z多种方式的触摸事件自动识别及中断触发z支持最多4按键二进制密码图形中断触发z主机触摸事件自动循环查询z工作电压2.7V~5.5V.z可配置offset消除。
敦泰触摸IC参数对照表
20*12
FT5402DQT
互容
推荐7-10.1寸
27*16
FT5206GE1
互容
推荐2.8-5寸
Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F Sito：金属架桥，OGS Dito：G+G，G+F+F 横三角图案： GF,GG,OGS,GP,PF 横三角图案： GF,GG,OGS,GP,PF 横三角图案： GF,GG,OGS,GP,PF 竖三角2点图案： GF,GG,OGS,GP,PF 横三角图案： GF,GG,OGS,GP,PF 竖三角2点图案： GF,GG,OGS,GP,PF G1M – OGS结构单层互容 GFM – GF结构单层互容 GGM – GG结构单层互容 G1M – OGS 结构单层互容 GFM – GF结构单层互容 GGM – GG结构单层互容
工作电流：6mA 待机电流：4mA 睡眠电流：30uA
工作温度： -20~+85 储存温度： -55~+150 工作温度： -20~+85 储存温度： -55~+150
智能触摸芯片 CPT2610 数据手册说明书
CHIPHOMER TECHNOLOGY (SHANGHAI) LIMITEDCPT2610 数据手册单/双通道电容性触摸检测芯片September 2019目录CPT2610 数据手册 (1)目录 (2)图目录 (3)1概述 (4)2引脚 (5)2.1引脚排列 (5)2.2引脚说明 (6)3典型应用 (7)3.1双通道典型应用图 (7)3.2单通道典型应用图 (7)4功能描述 (8)4.1按键状态 (8)4.1.1按键输出有效电平选择 (8)4.1.2CPT2610SP8、CPT2610DN8 按键状态获取 (8)4.1.3CPT2610ST6、CPT2610DN6 按键状态获取 (8)4.2按键扫描模式 (8)4.3长时按键触发解除功能 (8)5电气特性 (9)6封装 (10)6.1SOP8L (10)6.2DFN2X2-8L (11)6.3SOT23-6L (12)6.4DFN1.6X1.6-6L (13)7订货信息 (14)8版本信息 (15)图目录图1CPT2610 SOP8L 引脚排列图 (5)图2CPT2610 SOT23-6L引脚排列图 (5)图3CPT2610 DFN1.6X1.6-6L引脚排列图 (5)图4CPT2610 DFN2X2-8L引脚排列图 (5)图5双通道触摸典型应用图 (7)图6单通道触摸典型应用图 (7)图7SOP8L封装尺寸图 (10)图8DFN2X2-8L封装尺寸图 (11)图9SOT23-6L封装尺寸图 (12)图10DFN1.6X1.6-6L封装尺寸图 (13)1 概述CPT2610是一款低功耗双通道/单通道电容检测芯片，具有高效的RF噪音抑制功能，能够准确识别手指触摸引起的微小电容变化，适用于用触摸按键替代机械按键等应用场合；具有实时的自校准和基线跟踪算法，能有效避免因环境因素变化而引起按键误触等情况；支持输出有效电平选择，以满足不同系统平台及应用的要求。
三键电容式触控芯片XC2863 Datasheet
三通道电容式触摸键控制芯片XC2863目录1概述 (3)1.1 特性 (3)1.2 系统框图 (4)2管脚定义 (5)3功能描述 (6)4电气特性 (7)5关键特性 (8)5.1 环境自适应能力 (8)5.1.1环境漂移跟随 (8)5.1.2环境突变校准 (8)6应用指南 (9)7PCB设计 (10)7.1 触摸键设计 (10)7.1.1触摸键 (10)7.1.2触摸键的常用结构 (10)7.1.3触摸键设计 (11)7.2 PCB布线 (11)8封装 (12)1概述XC2863是一款支持宽工作电压范围的三输入三输出电容式触摸键控制芯片。
XC2863内部集成高分辨率触摸检测模块和专用信号处理电路，以保证芯片对环境变化具有灵敏的自动识别和跟踪功能，且内置特殊算法以实现防水、抗干扰等需求。
该芯片可满足用户在复杂应用中对稳定性、灵敏度、功耗、响应速度、防水、带水操作、抗震动、抗电磁干扰等方面的高体验要求。
XC2863为方便用户在应用中可对触摸键的灵敏度进行自主控制，特设置了灵敏度控制位。
用户只需在PCB设计中对这个管脚的逻辑电平值进行设置，就能自由选择在具体应用中芯片体现出的检测灵敏度。
XC2863还内置了上电复位及电源保护电路，在典型应用中可无需任何外部器件，也无需软件、程序或参数烧录。
芯片应用的开发过程非常简单，最大限度的降低了方案成本。
XC2863可广泛适用于遥控器、灯具调光、各类开关以及小家电和家用电器控制界面等应用中。
1.1特性工作电压：2.5V~5.5V三个高灵敏度的触摸检测通道无需进行参数烧录响应速度快抗电磁干扰能力强防水及带水操作功能独特的环境跟踪和自适应能力低功耗（典型工作电流< 25uA）内置上电复位（POR）和电源保护电路CMOS电平输出1.2系统框图XC2863包含PMU和Touch Key Core两个部分，其系统框图如图1所示。
图1 XC2863的系统框图2管脚定义XC2863采用SOP8封装，管脚分布如图2所示。
Espressif ESP32-C6 系列芯片技术规格书说明书
ESP32-C6系列芯片技术规格书搭载RISC-V32位单核处理器的极低功耗SoC2.4GHz Wi-Fi6(802.11ax)、Bluetooth®5(LE)、Zigbee及Thread(802.15.4)芯片封装内可叠封4MB flash30或22个GPIO，丰富的外设QFN40(5×5mm)或QFN32(5×5mm)封装包括：ESP32-C6ESP32-C6FH4版本1.0乐鑫信息科技版权©2023产品概述ESP32-C6是一款支持2.4GHz Wi-Fi 6、Bluetooth 5、Zigbee 3.0及Thread 1.3系统级芯片(SoC)，集成了一个高性能RISC-V 32位处理器和一个低功耗RISC-V 32位处理器、Wi-Fi 、Bluetooth LE 、802.15.4基带和MAC 、RF 模块及外设等。
Wi-Fi 、蓝牙及802.15.4共存，共用同一个天线。
芯片的功能框图如下图所示。
Modules having power in specific power modes:ActiveActive and Modem-sleep Active, Modem-sleep, Light-sleep;optional in Light-sleepAll modesESP32-C6功能框图更多关于功耗的信息，请参考章节3.9低功耗管理。
产品特性Wi-Fi•工作在2.4GHz频段，1T1R•工作信道中心频率范围：2412~2484MHz•支持IEEE802.11ax协议：–仅20MHz非接入点工作模式(20MHz-onlynon-AP mode)–MCS0~MCS9–上行、下行正交频分多址接入(OFDMA)，特别适用于高密度应用下的多用户并发传输–下行多用户多输入多输出(MU-MIMO)，提升网络容量–波束成形接收端(Beamformee)，提升信号质量–信道质量指示(Channel quality indication,CQI)–双载波调制(dual carrier modulation,DCM)，提高链路稳定性–空间复用(Spatial reuse)，提升网络容量–目标唤醒时间(TWT)，提供更好的节能机制•完全兼容IEEE802.11b/g/n协议：–支持20MHz和40MHz频宽–数据速率高达150Mbps–无线多媒体(WMM)–帧聚合(TX/RX A-MPDU,TX/RX A-MSDU)–立即块确认(Immediate Block ACK)–分片和重组(Fragmentation and defragmen-tation)–传输机会(Transmission opportunity,TXOP)–Beacon自动监测（硬件TSF）–4×虚拟Wi-Fi接口–同时支持基础结构型网络(InfrastructureBSS)Station模式、SoftAP模式、Station+SoftAP模式和混杂模式请注意ESP32-C6在Station模式下扫描时，SoftAP信道会同时改变–天线分集–802.11mc FTM蓝牙•低功耗蓝牙(Bluetooth LE)：通过Bluetooth5.3认证•Bluetooth mesh•高功率模式(20dBm)•速率支持125Kbps、500Kbps、1Mbps、2Mbps •广播扩展(Advertising Extensions)•多广播(Multiple Advertisement Sets)•信道选择(Channel Selection Algorithm#2)•功率控制(LE Power Control)•Wi-Fi与蓝牙共存，共用同一个天线IEEE802.15.4•兼容IEEE802.15.4-2015协议•工作在2.4GHz频段，支持OQPSK PHY•数据速率：250Kbps•支持Thread1.3•支持Zigbee3.0CPU和存储•高性能RISC-V处理器：–时钟频率：最高160MHz–四级流水线架构–CoreMark®得分：441.32CoreMark；2.76CoreMark/MHz(160MHz)•低功耗RISC-V处理器：–时钟频率：最高20MHz–二级流水线架构•L1cache：32KB•ROM：320KB•HP SRAM：512KB•LP SRAM：16KB•支持的SPI协议：SPI、Dual SPI、Quad SPI、QPI 接口在芯片封装外连接多个flash和其他SPI设备•通过cache加速flash访问•支持flash在线编程(ICP)高级外设接口•30×GPIO口(QFN40)或22×GPIO口(QFN32)•模拟接口：–1×12位SAR ADC，多达7个通道–1×温度传感器•数字接口：–2×UART–1×低功耗UART(LP UART)–2×SPI接口用于连接flash–1×通用SPI接口–1×I2C–1×低功耗I2C(LP I2C)–1×I2S–1×脉冲计数控制器–1×USB串口/JTAG控制器–2×TWAI®控制器，兼容ISO11898-1（CAN 规范2.0）–1×SDIO2.0从机控制器–LED PWM控制器，多达6个通道–1×电机控制脉宽调制器(MCPWM)–1×红外遥控器(TX/RX)–1×并行IO接口(PARLIO)–通用DMA控制器(简称GDMA)，3个接收通道和3个发送通道–事件任务矩阵(ETM)•定时器：–1×52位系统定时器–2×54位通用定时器–3×数字看门狗定时器–1×模拟看门狗定时器功耗管理•通过选择时钟频率、占空比、Wi-Fi工作模式和单独控制内部器件的电源，实现精准电源控制•针对典型场景设计的四种功耗模式：Active、Modem-sleep、Light-sleep、Deep-sleep•Deep-sleep模式下功耗低至7µA•Deep-sleep模式下低功耗存储器(LP memory)仍保持工作安全机制•安全启动-内部和外部存储器的权限控制•Flash加密-加密和解密存储器•4096位OTP，用户可用的高达1792位•可信执行环境控制器(TEE)和访问（地址）权限管理(APM)•加密硬件加速器：–AES-128/256(FIPS PUB197)–ECC–HMAC–RSA–SHA–数字签名–Hash(FIPS PUB180-4)•片外存储器加密与解密(XTS_AES)•随机数生成器(RNG)RF模块•天线开关、射频巴伦(balun)、功率放大器、低噪声放大器•802.11b传输功率高达+21dBm•802.11ax传输功率高达+19.5dBm•低功耗蓝牙接收器灵敏度(125Kbps)高达-106dBm应用低功耗芯片ESP32-C6专为物联网(IoT)设备而设计，应用领域包括：•智能家居•工业自动化•医疗保健•消费电子产品•智慧农业•POS机•服务机器人•音频设备•通用低功耗IoT传感器集线器•通用低功耗IoT数据记录器目录产品概述2产品特性3应用51ESP32-C6系列型号对比12 1.1命名规则12 1.2型号对比122管脚13 2.1管脚布局13 2.2管脚概述15 2.3IO管脚182.3.1IO MUX和GPIO管脚功能182.3.2LP IO MUX功能212.3.3模拟功能212.3.4GPIO和LP GPIO的限制23 2.4模拟管脚24 2.5电源252.5.1电源管脚252.5.2电源管理252.5.3芯片上电和复位26 2.6Strapping管脚272.6.1SDIO输入采样沿和输出驱动沿控制282.6.2芯片启动模式控制282.6.3ROM日志打印控制282.6.4JTAG信号源控制29 2.7芯片与flash的管脚对应关系303功能描述31 3.1CPU和存储313.1.1HP CPU313.1.2LP CPU313.1.3片上存储313.1.4封装外flash323.1.5存储器映射323.1.6Cache333.1.7TEE控制器333.1.8访问权限管理(APM)333.1.9超时保护33 3.2系统时钟333.2.1CPU时钟333.2.2低功耗时钟343.3模拟外设343.3.1模/数转换器(ADC)343.3.2温度传感器34 3.4数字外设343.4.1通用异步收发器(UART)343.4.2串行外设接口(SPI)353.4.3I2C接口353.4.4I2S接口353.4.5脉冲计数控制器(PCNT)363.4.6USB串口/JTAG控制器363.4.7TWAI®控制器363.4.8SDIO2.0从机控制器373.4.9LED PWM控制器373.4.10电机控制脉宽调制器(MCPWM)373.4.11红外遥控器(RMT)383.4.12并行IO(PARLIO)控制器383.4.13通用DMA控制器(GDMA)383.4.14事件任务矩阵(ETM)38 3.5射频383.5.1 2.4GHz接收器393.5.2 2.4GHz发射器393.5.3时钟生成器39 3.6Wi-Fi393.6.1Wi-Fi射频和基带393.6.2Wi-Fi MAC403.6.3联网特性41 3.7低功耗蓝牙413.7.1低功耗蓝牙PHY413.7.2低功耗蓝牙链路控制器41 3.8802.15.4423.8.1802.15.4PHY423.8.2802.15.4MAC42 3.9低功耗管理42 3.10定时器433.10.1系统定时器433.10.2通用定时器433.10.3看门狗定时器43 3.11加密/安全组件443.11.1AES加速器(AES)443.11.2ECC加速器(ECC)453.11.3HMAC加速器(HMAC)453.11.4RSA加速器(RSA)453.11.5SHA加速器(SHA)453.11.6数字签名(DS)463.11.7片外存储器加密与解密(XTS_AES)463.11.8随机数发生器(RNG)463.12外设管脚分配474电气特性50 4.1绝对最大额定值50 4.2建议电源条件50 4.3VDD_SPI输出特性50 4.4直流电气特性(3.3V,25°C)51 4.5ADC特性51 4.6功耗特性524.6.1Active模式下的RF功耗524.6.2其他功耗模式下的功耗53 4.7可靠性535射频特性55 5.1Wi-Fi射频555.1.1Wi-Fi射频发射器(TX)特性555.1.2Wi-Fi射频接收器(RX)特性56 5.2低功耗蓝牙射频585.2.1低功耗蓝牙射频发射器(TX)特性585.2.2低功耗蓝牙射频接收器(RX)特性59 5.3802.15.4射频615.3.1802.15.4射频发射器(TX)特性625.3.2802.15.4射频接收器(RX)特性626封装637相关文档和资源64附录A–ESP32-C6管脚总览65修订历史67表格1-1ESP32-C6系列芯片对比12 2-1QFN40封装管脚概述16 2-2QFN32封装管脚概述17 2-3QFN40封装IO MUX管脚功能19 2-4QFN32封装IO MUX管脚功能19 2-5LP IO MUX功能21 2-6模拟功能22 2-7模拟管脚24 2-8电源管脚25 2-9电压稳压器25 2-10上电和复位时序参数说明26 2-11Strapping管脚默认配置27 2-12Strapping管脚的时序参数说明27 2-13SDIO输入采样沿/输出驱动沿控制28 2-14芯片启动模式控制28 2-15ROM日志打印控制29 2-16JTAG信号源控制29 2-17QFN40封装芯片与封装外flash/PSRAM的管脚对应关系30 3-1外设和传感器管脚分配47 4-1绝对最大额定值50 4-2建议电源条件50 4-3VDD_SPI内部和输出特性50 4-4直流电气特性(3.3V,25°C)51 4-5ADC特性51 4-6ADC校准结果52 4-7Active模式下Wi-Fi(2.4GHz)功耗特性52 4-8Active模式下低功耗蓝牙功耗特性52 4-9Active模式下802.15.4功耗特性53 4-10Modem-sleep模式下的功耗53 4-11低功耗模式下的功耗53 4-12可靠性认证53 5-1Wi-Fi射频规格55 5-2频谱模板和EVM符合802.11标准时的发射功率55 5-3发射EVM测试55 5-4接收灵敏度56 5-5最大接收电平57 5-6接收邻道抑制57 5-7低功耗蓝牙射频规格58 5-8低功耗蓝牙-发射器特性-1Mbps58 5-9低功耗蓝牙-发射器特性-2Mbps58 5-10低功耗蓝牙-发射器特性-125Kbps59 5-11低功耗蓝牙-发射器特性-500Kbps59 5-12低功耗蓝牙-接收器特性-1Mbps595-13低功耗蓝牙-接收器特性-2Mbps60 5-14低功耗蓝牙-接收器特性-125Kbps61 5-15低功耗蓝牙-接收器特性-500Kbps61 5-16802.15.4射频规格61 5-17802.15.4发射器特性-250Kbps62 5-18802.15.4接收器特性-250Kbps62 7-1QFN40封装管脚总览65 7-2QFN32封装管脚总览66插图插图1-1ESP32-C6系列芯片命名规则12 2-1ESP32-C6管脚布局（QFN40封装，俯视图）13 2-2ESP32-C6管脚布局（QFN32封装，俯视图）14 2-3ESP32-C6电源管理26 2-4上电和复位时序参数图26 2-5Strapping管脚的时序参数图28 3-1地址映射结构32 6-1QFN40(5×5mm)封装63 6-2QFN32(5×5mm)封装631ESP32-C6系列型号对比1ESP32-C6系列型号对比1.1命名规则F H/N xflash ⼤⼩ (MB)flash 温度H：⾼温N：正常封装内 flash芯⽚系列图1-1.ESP32-C6系列芯片命名规则1.2型号对比表1-1.ESP32-C6系列芯片对比1更多关于芯片丝印和包装的信息，请参考小节6封装。
思力微GSL3692_DataSheet_Chinese_RevA1.2
4.5. 电路元件...........................................................................................................................................16
3
Silead Inc. 上海思立微电子科技有限公司-多点电容触控 IC
GSL3692 Capacitive Touchscreen Controller
4.3.5. SDA, SCL.....................................................................................................................................15
1.1. 管脚图 .................................................................................................................................................6 1.2. 管脚说明.............................................................................................................................................6 1.3. 原理示意图.........................................................................................................................................9 2. 概述..............................................................................................................................................................9 2.1. 简介 .....................................................................................................................................................9 2.2. 资源 ...................................................................................................................................................11 3. 电容式触控基础.......................................................................................................................................11 3.1. 传感器和节点结构 ..........................................................................................................................11 3.2. 扫描顺序...........................................................................................................................................12 3.3. 触摸屏的灵敏度 ..............................................................................................................................12 4. 操作细节 ...................................................................................................................................................13 4.1. 上电和复位.......................................................................................................................................13 4.2. 校准 ...................................................................................................................................................13 4.3. 通讯 ...................................................................................................................................................13
F788-RK3126整机规格书
视频播放格式
AVI, MKV(XVID/px/H.264), MOV, TS, M2TS, RM/RM 3GP, MPEG, DAT, MP4(support to 1080P:1920x108
备注
尔达/深玛外壳
图片
MID参数 E 802.11b/g/N无线网络 选） 车游戏 素 0mAH(单节3.7V） I正常工作时间__小时 60Hz 50） ， 支持FLASH11.1 layer /Apk /Calculator lorer /ES Task Manager/Global Time Talk/iReader/NC Manager/Google Search wser/Weather Forecast/QQ/Email/Gmail OGG、WAV 20Hz to 20000Hz 64), MOV, TS, M2TS, RM/RMVB, FLV, support to 1080P:1920x1080)
摄像头
前30万像素，后200万像素
锂电池
锂聚合物ห้องสมุดไป่ตู้池容量：3400mAH(单节3.7V） 待机时间__小时，开WIFI正常工作时间__小时
input:AC100-240V 50-60Hz 电源
output:5V 2A(谐波小于50）
android 4.4.4操作系统， 支持FLASH11.1
Video Player/Audio Player /Apk /Calculator
4GB/512M (内存/容量可选)
电容式灵敏触摸屏
1* TF卡槽接口（最大到32GB）
1* Micro USB
1* 3.5MM耳机插孔
1* 电源开关按键
2* 返回键
图片
电容式感应触摸芯片功能说明
触控焊盘自身存在一个分布电容。当手指或者其它物体接近触控焊盘时，触 控焊盘周围的环境（地）改变，导致其分布电容发生变化。这种变化由触控芯片 内部的专用电路转换成频率信号后，交给芯片内部软件处理，而后作出相应的控 制动作。
3、特征
1> 最多支持 8 通道触摸按键 2> 输出可选择为 IIC 或者一对一接口（1 脚选择） 3> 一对一接口下灵敏度端口电容细调，外部电阻 6 级粗调 ， IIC 下内部寄存器设置， 4> 端口内部集成电阻，可省略串入电阻 5> 单多按键模式，长短按时间内部寄存器可设置 6> 上电 0.5S 快速初始化 7> 可过电流注入 10V、电子群脉冲 4KV、静电 15KV（非接触）测试 8> 防尘、防水、环境改变自动校准
7 IIC 通信
7.1 开始与停止
7.2 从机地址
7.3 写数据
7.4 读数据
7.5 数据传输注意事项 1，发送数据必须一次全部写入共 17 字节数据。16 字节(0xD0~0xDF)+1 字节校验和，单字节写入和校验码错误写入数据都会被丢弃； 2，传输速率<100K； 3，SDA/SCL 线均需要设置为开漏接口，输出高为外部电阻上拉产生。 输出低，芯片直接拉低。 4，从机（YS8XX）忙碌时 SCL 为低电平，此期间主机不可传输数据。 主机传输数据前，检查 SCL 为高，才能传输下一个数据。
读
按键数量
1-24Key
读
EEPROM 状态 Bit7=1 资料错误 Bit2=1 忙碌
保留
读
按键输出
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
08H K8 K7 K6 K5 K4 K3 K2 K1
思力微GSL3692_DataSheet_Chinese_RevA1.2
1.1. 管脚图 .................................................................................................................................................6 1.2. 管脚说明.............................................................................................................................................6 1.3. 原理示意图.........................................................................................................................................9 2. 概述..............................................................................................................................................................9 2.1. 简介 .....................................................................................................................................................9 2.2. 资源 ...................................................................................................................................................11 3. 电容式触控基础.......................................................................................................................................11 3.1. 传感器和节点结构 ..........................................................................................................................11 3.2. 扫描顺序...........................................................................................................................................12 3.3. 触摸屏的灵敏度 ..............................................................................................................................12 4. 操作细节 ...................................................................................................................................................13 4.1. 上电和复位.......................................................................................................................................13 4.2. 校准 ...................................................................................................................................................13 4.3. 通讯 ...................................................................................................................................................13
CPT112S芯科电容触摸按键芯片资料
TouchXpress™ Family CPT112S Data SheetThe CPT112S device, part of the TouchXpress family, is designed to quickly add capacitive touch via an I2C interface by eliminating the firmware complexity and reducing the development time for ca-pacitive sensing applications.Supporting up to 12 capacitive sensor inputs in packages as small as a 3 mm x 3 mm QFN, the CPT112S is a highly-integrated device that interfaces via I2C to the host pro-cessor to provide a simple solution for adding capacitive touch. The device also comes with advanced features like moisture immunity, wake-on proximity, and buzzer feedback for an enhanced user experience. No firmware development is needed, and all the ca-pacitive touch sense parameters can be configured using a simple GUI-based configura-tor. By eliminating the need for complex firmware development, the CPT112S device en-ables rapid user interface designs with minimal development effort.The CPT112S device is ideal for a wide range of capacitive touch applications including the following:•Home appliances•Instrument / Control panels •White goods•Medical equipment •Consumer electronics •Lighting controlOptimized ActiveLowest power mode with feature operational:ActiveLow Power SleepFeature List and Ordering Information 1. Feature List and Ordering InformationFigure 1.1. CPT112S Part NumberingThe CPT112S has the following features:•Capacitive sensing input engine with 12 inputs•Post-sample touch qualification engine•Configuration profile space in non-volatile memory•I2C event buffer with interrupt pin to signal when new touch events have been qualified•Low power state machine to minimize current draw in all use cases•Capacitive proximity sensing input•Buzzer output•Mutually-exclusive touch qualifier•Touch time-out timerTable 1.1. Product Selection Guide2. Typical Connection Diagrams2.1 Signal, Analog, and Power connectionsFigure 2.1 Connection Diagram on page 2 shows a typical connection diagram for the power pins of CPT112S devices.Figure 2.1. Connection Diagram2.2 ConfigurationThe diagram below shows a typical connection diagram for the configuration connections pins. The ToolStick Base Adapter is available on the evaluation board.Figure 2.2. Configuration Connection Diagram3. Electrical Specifications3.1 Electrical CharacteristicsAll electrical parameters in all tables are specified under the conditions listed in Table 3.1 Recommended Operating Conditions on page 4, unless stated otherwise.3.1.1 Recommended Operating ConditionsTable 3.1. Recommended Operating Conditions3.1.2 Power ConsumptionSee 3.4 Typical Performance Curves for power consumption plots.Table 3.2. Power Consumption3.1.3 Reset and Supply MonitorTable 3.3. Reset and Supply Monitor3.1.4 Configuration MemoryTable 3.4. Configuration Memory3.1.5 Capacitive SenseTable 3.5. Capacitive Sense3.1.6 Buzzer OutputTable 3.6. Buzzer Output3.2 Thermal ConditionsTable 3.7. Thermal Conditions3.3 Absolute Maximum RatingsStresses above those listed in Table 3.8 Absolute Maximum Ratings on page 9 may cause permanent damage to the device. This is a stress rating only and functional operation of the devices at those or any other conditions above those indicated in the operation list-ings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. For more information on the available quality and reliability data, see the Quality and Reliability Monitor Report at / support/quality/pages/default.aspx.Table 3.8. Absolute Maximum Ratings3.4 Typical Performance CurvesFigure 3.1. Active Mode Processing Time Per SensorNote: Active mode processing time per sensor measured with sensors configured to 1x accumulation, 8x gain. Sensor sampling and system processing time is included with mutually-exclusive buttons, the buzzer, slider, and touch time-outs disabled.Figure 3.2. Current vs. Active Mode Scan Period — Base Current ConsumptionFigure 3.3. Current vs. Active Mode Scan Period — Current Consumption for Each Additional SensorNote: Active mode scan period current draw measured with free run mode disabled and all 12 sensors enabled at 4x accumulation, 8x gain. In addition, the buzzer, slider, and mutually-exclusive button groups were disabled.Figure 3.4. Typical V OH CurvesFigure 3.5. Typical V OL Curves4. Functional Description4.1 Capacitive Sensing Input 4.1.1 IntroductionThe capacitive to digital converter uses an iterative, charge-timing self-capacitance technique to measure capacitance on an input pin.Sampling is configured and controlled by settings in the non-volatile configuration profile, which can be changed through the 2-pin con-figuration interface.C a p a c i t a n c eTimeFigure 4.1. Capacitive Sense Data Types4.1.2 Touch Qualification CriteriaThe device detects a touch event when an inactive (untouched) input enabled by the input enable mask detects an sequence of meas-urements that cross the active threshold.The device detects a touch release event when an active (touched) input enabled by the input enable mask detects an sequence of measurements that cross the inactive threshold.The debounce configuration profile parameter defines how many measurements in a row must cross a threshold before a touch or re-lease is qualified. In electrically noisy environments more heavily filtered data is used for qualification.4.1.3 ThresholdsCapacitive sensing inputs use input-specific thresholds for touch qualification. Each input uses two thresholds, one to detect inactive-to-active transitions on the input, and another to determine active-to-inactive transitions on the input. The inputs use two thresholds to add hysteresis and prevent active/inactive ringing on inputs. Each threshold can be set through Simplicity Studio tools and all thresholds are stored in non-volatile memory in the device's configuration profile.Thresholds are defined as percentages of a capacitive sensing input's touch delta.4.1.4 Debounce CounterEach capacitive sensing input maintains its own debounce counter. For an inactive sensor, this counter tracks the number of succes-sive samples which have crossed that input's active threshold. For an active sensor, this counter tracks the number of successive sam-ples which have crossed the inactive threshold. When the counter reaches a terminal value defined in the the configuration profile, the touch/release event is qualified.4.1.5 Touch DeltasEach capacitive sensing input uses a stored touch delta value that describes the expected difference between inactive and active ca-pacitive sensing output codes. This value is stored in the configuration profile for the system and is used by the touch qualification en-gine, which defines inactive and active thresholds relative to the touch delta.The touch deltas are stored in the configuration profile in a touch delta/16 format. For this reason, touch deltas must be configured as multiples of 16.4.1.6 Auto-Accumulation and AveragingCapacitive sensing inputs have an auto-accumulate and average post-sample filter that can be used to improve signal strength if nee-ded. Settings stored in the configuration profile can configure the engine to accumulate 1, 4, 8, 16, 32, or 64 samples. After the defined number of samples have been accumulated, the result is divided by either 1, 4, 8, 16, 32, or 64, depending on the accumulation setting. This auto-accumulated and averaged value is the sample output used for all touch qualification processing. Note that sample time per sensor increases as the level of accumulation increases. To reduce current consumption, the engine should not be set to auto-accumu-late unless it is required to achieve acceptable signal strength due to thick overlays or other system-level factors.4.1.7 Drive strengthThe drive strength of the current source used to charge the electrode being measured by the capacitive sensing input can be adjusted in integer increments from 1x to 8x (8x is the default). High drive strength gives the best sensitivity and resolution for small capacitors, such as those typically implemented as touch-sensitive PCB features. To measure larger capacitance values, the drive strength should be lowered accordingly. The highest drive strength setting that yields capacitive sensing output which does not saturate the sensing engine when the electrode is active (touched) should always be used to maximize input sensitivity.4.1.8 Active Mode Scan EnableActive mode scanning of capacitive sensing inputs is controlled by an enable setting for each capacitive sensing input. This setting is stored in the configuration profile.4.1.9 Active Mode Scan PeriodThe capacitive sensing input engine stays in active mode whenever one or more inputs have qualified as active. During this time, the sensors scan at a periodicity defined by the active mode scan period, which is stored in the configuration profile. Every active mode scan pushes new samples through the processing engine, which checks for new touch and release events on all enabled inputs.If free run mode is enabled, the engine will repeatedly scan all enabled inputs during the active mode scan period. In this mode of operation, the active mode scan period is used as a timer to determine how much time has passed since the last qualified active sensor has been seen. When a defined amount of time without a qualified touch event has occurred, the engine switches to a low power mode using the sleep mode scan period, and conserves current.If free run mode is disabled, the engine will enter a low power state after completing one scan of all enabled inputs and processing the resulting samples. The engine will remain in this low power state until it wakes, at a time defined by active mode scan period, to perform another scan.4.1.10 Active Mode Scan TypeThe active mode scan type, which is stored in the configuration profile, controls whether the capacitive sensing engine in active mode will scan only once during the active mode scan period before going to sleep, or whether the engine will continue scanning as quickly as possible during the active mode scan period, never entering a low power state.For optimal responsiveness, the engine should be configured to run with free run mode enabled. Setting the scan mode to 'free run' causes touch qualification on a new touch to occur as quickly as the scanning engine can convert and process samples on all sensors. In this mode, qualification time is not bounded by active mode scan period, and is only bounded by scanning configuration factors such as the debounce setting, the number of enabled sensors, the accumulation setting on each sensor, and the timing constraints of any enabled component.For optimal current draw when in active mode, the engine should be configured to use the 'one scan per period' mode setting. In this case, touch qualification is bound by the scan period and the debounce setting of the device.Touch Event(t = 0 ms)10 ms20 ms30 ms40 msFigure 4.2. Timing and Current — One Sample Per Period ModeTouch Event10 ms20 ms30 ms40 ms(t = 0 ms)4.1.11 Sleep Mode Scan PeriodThe sleep mode scan period defines the rate at which a scan of the inputs enabled as wake-up sources are sampled. Each enabled sensor can also be enabled as a wake-up source. After the sleep mode scan completes, the scan is processed for a qualified candidate touch. If a candidate touch is qualified, the system wakes form sleep mode and enters active mode scanning.The sleep mode scan period is stored in the configuration profile and is defined in units of ms.4.1.12 Active Mode and Sleep Mode TransitionsCapacitive sensing inputs will stay in active mode until no inputs detect qualified touches for a span of time defined by the counts until sleep parameter stored in the configuration profile. The scan period of enabled inputs is defined by the active mode scan period, also found in the configuration profile. If free run mode is enabled, the active mode sensing engine will remain awake and scanning the sen-sors as fast as possible. If free run mode is disabled, the engine will put itself into a low power state for the remainder of the active mode scan period, after a scan has completed.When in sleep mode, the sensing engine will wake at a period defined by sleep mode scan period to do a scan on sensors that have been enabled as wakeup sources. If the engine finds a candidate touch in this state, the system reverts to active mode to continue scanning.Note that in systems where a proximity input is selected, the sleep mode scan engine uses conversions on the proximity input instead of sensors enabled as wakeup sources.Devices configured to wake on a touch will attempt to qualify the candidate touch that initiated the sleep-to-active transition. If qualifica-tion completes successfully, the device will signal this qualification to the external system. Touch qualification of this candidate touch uses the same active mode thresholds, debounce setting, and active mode scan period settings as any touch that occurs during active mode scanning.D e v i c eE x e c u t i o nFigure 4.4. Active and Sleep Transitions4.2 I2C Event Buffer Interface4.2.1 IntroductionThe event buffer I2C interface provides an event-driven, packetized communication system describing newly qualified events generated by the capacitive sensing input engine.The interface provides access to a first-in-first-out buffer of data packets. When the sensing engine generates these packets and push-es them onto the buffer. The interface then signals a host to indicate that one or more packets are available in the buffer by activating the event buffer interrupt pin.The interrupt pin is defined as active-low and operates as a push-pull digital output.The host reads the packets through an I2C interface, with the host acting as an I2C master. Once all packets have been fully transmit-ted across the I2C interface, the event buffer interrupt pin is de-activated. The device will remain in active mode until no packets remain in the buffer, even if no sensors have been qualified as active for the period of time defined by the active mode scan period and the counts before sleep value.4.2.2 Packet retrieval in operational modeWhen the least significant byte of the CRC of an event packet has been transferred during a master read transaction, that event is popped from the device's buffer. If only a part of the event is read, the event will stay in the buffer and will be transmitted again by the device during the next read.If the host initiates a master read when the device is in operational mode but the interrupt pin is not active, signifying that the device has no events in its buffer to transmit, the device will NACK its slave address on the bus.If the I2C master sends a stop condition on the bus before the entire three-byte packet has been read, the device will not pop the pack-et from its internal buffer. Instead, the I2C state machine will reset, and the next transaction will begin with the first byte of the same event that was being read in the previous, prematurely-terminated transaction.The I2C event buffer has a depth of 22 events. If the host does not read events promptly after seeing the interrupt pin go active, there is the possibility of a buffer overflow. In the event of an overflow, the I2C engine will discard the oldest events first.New I2C packets will only be generated at the active mode sample rate, and so the buffer will only fill at a maximum of 12 packets (in the case of 12 simultaneous touch/releases) per sample period. If the host runs the I2C bus at 400kHz and reads packets as soon as the interrupt pin activates, all packets can be read from the buffer in 1 to 2 ms, which is faster than the rate at which a new active mode scan sequence can complete.4.2.3 Event Packet StructureEvery qualified event detected by the capacitive sensing input engine generates a single packet that can be retrieved by the host pro-cessor through the event buffer I2C interface. The packet is an atomic data unit that fully describes the generated event.Note: The bytes in the packet are transmitted MSB first.Each packet has a standard structure that can be parsed by the host.Table 4.1. Standard Packet StructureThe packet counter is a 4-bit number stored in the upper bits of byte 1. Each new event will be assigned a counter value that is +1 from the last qualified event. After event 15, the counter wraps back to 0 for the next event. The counter captures the temporal nature of touch events so that a host can reconstruct a sequence of events over time. Also, the host can use the counter value to determine if a packet has been lost due to a buffer overflow.The event type is a 4-bit value describes the originator of the event. For instance, the source could be a capacitive sensing button. The event type is stored in the lower 4 bits of byte 1.The event description bytes define characteristics of the event that have been qualified. Event descriptions are defined relative to the event source. An event source that is a capacitive sensing input will have a defined set of valid event description values. Those same values will mean something different for a different type of event source, such as a slider. Event description values are defined relative to the event type field of byte 1.Touch Event I2C Slave Address+ read bitCSxx index reserved byte 0byte 1byte 2byte 3Touch Release Event I2C Slave Address+ read bitCSxx index reserved byte 0byte 1byte 2byte 3Slider Event I2C Slave Address+ read bitslider position(MSB)slider position(LSB) byte 0byte 1byte 2byte 3packetcounter0010eventtype0000packetcounter0011eventtype0001packetcounter0100eventtype0010Figure 4.5. I2C Event Buffer Packet Structure4.2.4 Defined Event TypesThe device assigns the following event types to events.Table 4.2. Event Type MappingNote that this event type value is stored in the lower 4 bits of the first byte of a packet. The upper 4 bits are a packet counter value.4.2.5 Description Bytes for Touch EventsA touch or release event uses only one byte of the description field. That field identifies which sensor caused the touch or release event as shown below.Table 4.3. Touch or Release Event Sensor Mapping4.2.6 Description Bytes for Slider EventsThe slider activity description field uses two bytes to describe the position of the slider, which can be any value between 0 (0x0000) and 65534 (0xFFFE). The most-significant byte of this value is transmitted in the first byte (byte 2 of the event packet), and the least-signifi-cant byte is transmitted second (byte 3 of the event packet).When the slider is released, a final slider event will be transmitted with 0xFFFF in the two-byte field.4.2.7 Event Buffer I2C Slave AddressThe device's I2C slave address is configurable through the configuration profile. The device will ACK its slave address only when the interrupt pin is low, signalling that a packet is ready to be read by the host. If the interrupt pin is logic high, the device will not ACK its slave address.4.3 Capacitive Proximity Sensing4.3.1 Wake on ProximityThe wake on capacitive proximity detection engine monitors for the presence of a conductive object such as a hand to move within detectable range of the sensor. When the engine detects an object, the device wakes from sleep and can begin qualifying touch events on all sensors enabled for active mode sensing.4.3.2 Proximity ConfigurationThe proximity sensing feature uses a single sensor input for proximity qualification. The configuration profile stores the pin chosen by the user. The sensor used for proximity qualification should also have a drive strength setting that is as high as possible without saturat-ing the input when no conductive object is in proximity to the proximity sensor. The accumulation setting of the input is also configura-ble.The proximity threshold controls the sensitivity of the input. A lower threshold setting increases sensitivity and increases the range of the sensor.A proximity sensing input cannot be used for touch qualification, and so the active and inactive thresholds are not used for proximity sensors. Additionally, the proximity input has no effect on other components of the device such as mutually exclusive button groups, buzzer output, touch time out timers, and sliders.4.4 SliderThe device supports creation of a single slider that is composed of two or more capacitive sensing input pins. The pins chosen as slider inputs are assigned to the slider feature through the configuration profile.The configuration profile also stores a value designated as the highest positional value that can be derived by the slider engine. That highest value is used to derive the values of all intermediate positions on the slider array.When a capacitive sensing input pin is designated as a slider input, it will no longer function as a 'button' input and will not generate button style touch/release events across the I2C buffer interface.Touching the slider pads and moving a finger along a slider pad generates an event packet of type Slider, with the remaining two bytes of the packet describing the calculated active position of the slider.The range of possible reported slider active positions can be 0 to the maximum value of the slider as defined in the configuration profile,which can be any value between 40 and 65534. The 65535 (0xFFFF) value is reserved for a slider untouched event.Position 0 is always assigned to the lowest CSxx sensor enabled as a slider input. The maximum position value of the slider is assigned to the highest CSxx sensor enabled as a slider input. All slider inputs in between are assumed to be routed to the slider contiguously,lowest to highest.InvalidConfigurationValidConfigurationincreasing slider positionValidConfigurationpositionFigure 4.6. Slider Behavior and Layout ConstraintsSlider touch qualification uses the same touch deltas and thresholds that are defined in the configuration profile for all enabled sensors.The user should configure slider sensors through the configuration profile, just as one would configure a sensor assigned to a capaci-tive button.For optimal performance, each sensor used in the slider should have roughly the same touch surface area dimensions.If the touch-timeout feature is enabled, slider-assigned inputs will also be subject to being qualified as releases by the touch-timeout feature.The mutually exclusive button grouping feature does not affect slider-assigned sensors. Even if the mutually exclusive button grouping feature is enabled, multiple slider-assigned sensors can still be used to resolve a finger's position on the slider.4.5 Touch Time-OutThe touch time-out feature can be enabled and disabled through the configuration profile. When enabled, the device will monitor touch event duration on each input independently.When a touch event exceeds a duration specified in the configuration profile, the device forces a release event, even if the user is still actively touching the sensor.The feature qualifies a touch release by adding the configured touch delta value for that sensor to the sensor's current baseline value. By doing this, the raw data-to-baseline delta created by the touch will be removed, and the touch qualification engine will see this as a touch release event.When the user removes a finger from a sensor that had been qualified active but has been qualified released through touch timeout, the resulting raw-to-baseline negative delta will be aggressively tracked downward by the baseline, resulting in a sensor that remains sensi-tive to successive touches.The touch timeout duration is configured globally, so all inputs are monitored for the same touch duration.If both the touch timeout feature and the mutually exclusive button group feature are enabled, the timeout timer will only run on the touch that is externally reported as being active.4.6 Buzzer Output4.6.1 IntroductionThe buzzer output engine produces a square wave of a configurable duration and frequency when a capacitive sensing input goes from inactive to active. The feature can be enabled and disabled through the configuration profile. The configuration profile also includes the settings for active duration and frequency.Device ExecutionActiveOptimizedActiveSleepNo Touch, Buzzer InactiveFigure 4.7. Effects of the Buzzer on Current Draw — Active Mode, No Touch, Buzzer InactiveDevice ExecutionActiveOptimizedActiveSleepTouch Detected, Buzzer ActiveFigure 4.8. Effects of the Buzzer on Current Draw — Active Mode, Touch Detected, Buzzer Active4.6.2 Buzzer ConfigurationWhen enabled, buzzer output will appear on the CS11/buzzer pin (pin 10) of the device. When buzzer output is enabled, CS11 is not available for capactive input sensing.When activated, the buzzer will remain active for either the duration specified in the configuration profile, or until the last active sensor has qualified a touch release.The configuration profile supports configuration of output frequencies ranging from 1 kHz to 4 kHz.The configuration profile can configure the buzzer output pin to either push pull mode or open drain mode.4.7 Mutually Exclusive ButtonsWhen enabled through the configuration profile, this system allows one and only one capacitive sensing input to be qualified as active at a time. The first sensor active will remain the only sensor active until released. The device will internally qualify multiple touch and release events but will not report them.If multiple sensors have been internally qualified as active, the first sensor's touch event will be reported. If a touch event occurs simul-taneously on more than one sensor, the touch with the highest touch delta will be reported.If two sensors are qualified as active and the sensor being reported as active qualifies a touch release, the device will report that re-lease and then report a touch qualification on the still-active second sensor.In the case where a device has simultaneously qualified more than two active sensors and the reported active sensor qualifies and reports a release, the remaining qualified sensor with the highest sensor name will then be reported. For example, if sensors CS00,CS01, and CS02 are active with CS00 externally reported as active, after CS00's release, CS02 would be externally reported as an active sensor unless the device has already qualified a touch release on CS02.If both the touch timeout feature and the mutually exclusive button group feature are enabled, the timeout timer will only run on the touch that is externally reported as being active.Device Executionphysical touch on pad touch reported by CPT device release reported by CPT deviceFigure 4.9. Mutually-Exclusive Button Operation4.8 Self Testing4.8.1 IntroductionWhen the self-test feature is enabled through the configuration profile, the device performs a check on all enabled capacitive sensing inputs upon startup to determine whether the sensing input pins are erroneously shorted to ground or supply. If a short or open is found on a sensor, the self test feature will signal that an error has been found through a port pin. The feature will then disable that sensor before beginning touch qualification scans on all sensors left enabled.4.8.2 Test Failure SignalingIf the self test check reveals an error, the device will toggle the I2C buffer interrupt pin at a frequency of 2 Hz. This toggling will persist for two seconds if the device detects one or more self test errors.4.9 Configuration ProfileThe configuration interface is used by the device to configure default values and performance characteristics that effect capacitive sensing. The configuration data can be programmed through the Configuration interface (Config Clk and Config Data pins) using [Con-figurator] in Simplicity Studio.Several configuration profile templates are available in Simplicity Studio to provide a starting point for development.。
xc6192系列电池供电设备电源按钮开关芯片数据手册说明书
XC6192SeriesPower saving Push Button Load switch ETR33010-003■BLOCK DIAGRAMXC6192AXC6192B* Diodes inside the circuit are an ESD protection diodes and a parasitic diodes.OUTSSV IN SWSHDNOUTSSV IN SWSHDNXC6192Series ■PRODUCT CLASSIFICATION●Ordering Information(*1)●Selection GuideParts No. Turn-On Delay Time (s) Turn-Off Delay Time (s) PackageXC6192AA05ER-G0.5s 5sUSP-8B06XC6192AA10ER-G 10sXC6192BANNER-G Not applicable■PIN CONFIGURATION*The dissipation pad for the USP-8B06 package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release.When taking out a potential of the heat-sink, connect with V SS pin (#5 pin).■PIN ASSIGNMENTPIN NUMBER PIN NAMEFUNCTIONUSP-8B061 V IN Power Supply Input2 N.C No connection pin(The N.C pin should be connected the V SS pin.) 3 SW Push Button Signal input pin 4 PG Power Good Status Output 5 V SS Ground Pin6 TEST The TEST pin must be connected the V SS pin.7 SHDNForced Shutdown pin 8V OUTOutput pin■PIN FUNCTIOS ASSIGNMENTPIN NAME SIGNALSTATUS SW (*3)L ActiveH Keep the current state OPEN Undefined State (*1) SHDN (*3)LKeep the current state H Shut down OPEN Undefined State (*1) PGLow impedance V OUT < V RUSH (*2) High impedanceV OUT ≥ V RUSH (*2)(*1) Please do not leave the SW pin and the SHDN pin open. Each should have a certain voltage (*2) Please refer to electrical characteristics.(*3)Please refer to notes on use.43215867V OUT SHDN TEST V SS V IN N.C SW PGUSP-8B06(BOTTOM VIEW)XC6192Series ■ABSOLUTE MAXIMUM RATINGSXC6192Series■TEST CIRCUITSTest Circuit (1)Unless otherwise stated, V SS common, V IN =6.0V, V SW =6.0V, V SHDN =0V, V PG =Open, I OUT =0mA, C IN =0.1μF, C L =0.1μF■TYPICAL APPLICATION CIRCUIT【Typical Examples】(*1) Please select freely according to the threshold of the MCU's I/O.XC6192Series■OPERATIONAL EXPLANATIONThe XC6192 series A type fixes V OUT at “H” voltage (same level as the V IN pin voltage) when “L” voltage is input the required time into the SW pin, and shuts down V OUT (same level as GND) when “L” voltage is subsequently input the required time into the SW pin, thereby realizing alternating ON/OFF control (*1). Two shutdown methods are available: inputting “H” voltage into the SHDN pin, and inputting “L” voltage the required time into the SW pin.(*1)Alternating ON/OFF control on this IC is a system that alternates between VOUT “H” voltage and shutdown each time “L” voltage is input the required time into the SW pin.The B type fixes V OUT at “H” voltage when “L” voltage is input the required time into the SW pin. After V OUT is fixed at “H” voltage, the signal is not accepted if “L” voltage is subsequently input into the SW pin. The shutdown method is inputting “H” voltage into the SHDN pin.As protective functions, the XC6192 series is equipped with a rush current prevention circuit and a short-circuit protection circuit.OUTV IN SWSHDN■OPERATIONAL EXPLANATION (Continued)[Turn-On sequence: Fig.3]On the XC6192 series, when “L” voltage is input for the duration T OND into the SW pin with V OUT fixed at “L” voltage, the Pch pre-driver transistor PM1 (Fig.1) turns ON and V OUT starts to rise. If the SW pin is switched from “L” voltage to “H” voltage while V OUT is rising by PM1, V OUT will change to the shutdown state.When the V OUT pin voltage reaches Inrush Current Limit Voltage (V RUSH: refer to Electrical Characteristics), the main driver transistor PM2 (Fig.1) turns ON, and V OUT is fixed at “H” voltage even if the SW pin voltage changes to “H” voltage.When the V OUT pin voltage reaches V RUSH, the Nch transistor NM1 that is connected to the PG pin (Fig.1) turns OFF and the PG pin changes to high impedance.These operations suppress rush current to the capacitor that is connected to the V OUT pin and allow the input power supply to maintain stability. In addition, by connecting the PG pin to the Enable pin of the device that follows the XC6192 series, malfunctioning of that device is prevented. (Fig.2)[Shutdown sequence: Fig.4]On the XC6192 series, when one pulse of “H” voltage (at least 1ms as a guideline) is input into the SDHN pin with V OUT fixed at “H” voltage, V OUT changes to the shutdown state and the IC enters the standby state.[Turn-Off sequence: Fig.5]On the A type, when “L” voltage is input into the SW pin for the duration T OFFD with V OUT fixed at “H” voltage, V OUT shuts down. After shutdown, returning the SW pin to “H” voltage reduces the supply current to the standby current while holding the IC’s logic.The B type does not have this function.V OUT Pin VoltagePG Pin VoltageSHDN pin Voltage[Operation after Turn-On: Fig. 6]On the A type, when “L” voltage is input into the SW pin for the duration T OND and V OUT is fixed at “H” voltage, and then “L”voltage is input into the SW pin for the duration T OFFD , the Turn-Off sequence cannot be initiated. To initiate the Turn-Off sequence, “H” voltage must be input into the SW pin, and then “L” voltage must again be input for the duration T OFFD . The B type does not have a Turn-Off sequence by SW pin.[Operation after Turn-Off:Fig.7]On the A type, when “L” voltage is input into the SW pin for the duration T OFFD and V OUT is shut down, and then “L” voltage isinput into the SW pin for the duration T OND , the Turn-On sequence cannot be initiated.To initiate the Turn-On sequence, “H” voltage must be input into the SW pin, and then “L” voltage must again be input for the duration T OND .The B type does not have a Turn-Off sequence by SW pin.[Operation after shutdown: Fig. 8]On the XC6192 series, in order to initiate the Turn-On sequence after “H” voltage is input into the SHDN pin and V OUT is shut down, “H” voltage must be input into the SW pin and then “L” voltage must again be input for the duration T OND.[Inrush current limit and output short circuit protection:Fig.9 ]The XC6192 series has a function that limits rush current and a circuit that shuts down the output when an output short-circuit is detected.During the time until the V OUT pin voltage reaches V RUSH during the Turn-On sequence, only PM1 turns ON, and therefore the voltage rises through the Pre-driver On Resistor (R ONP: refer to the Electrical Characteristics).When the V OUT pin voltage reaches V RUSH or more, PM2 turns ON and rush current limiting is released.The rush current at the instant when PM1 turns ON is calculated using the following equation.Inrush Current = V IN / R ONP (A)In addition, during the time until the V OUT pin voltage reaches V RUSH by means of the rush current limiting function, the load current while V OUT rises must be set to less than the value given by the equation below.Start-up Load Current < (V IN – V RUSH (Max.)) / R ONP (A)Example: 4.2V – 4.15V / 135 Ohms = 0.359mA;Note this very low 0.359mA is used to charge the output capacitors. If startup load current exceeds this, the output current will pass thru PM1 only, and have a 135 ohm resistor creating a voltage drop. If it’s noticed that V OUT is significantly below V IN, please ensure start-up load current is NOT exceeded.If the V OUT pin voltage drops below the Short Circuit Detect Voltage (V SHORT: refer to the Electrical Characteristics) after the Turn-On sequence, a short-circuit is detected and PM1 and PM2 are latched in the OFF state, causing V OUT to shut down. The relation between the output current (I SHORT) and V SHORT when a short circuit occurs is given by the equation below.I SHORT = (V IN - V SHORT) / R ON (A)The equation for the maximum output current is as follows.I OUT (Min.) = (V IN - V SHORT (Max.)) / R ON (Max.) (A)[SW pin]When “L” voltage is input into the SW pin for the duration T OND with the IC in the standby state, the pin fixes V OUT at “H” voltage.On the A type, when V OUT is fixed at “H” voltage, “L” voltage can be input for the duration T OFFD to shut down V OUT.[SHDN pin]This pin shuts down V OUT when one pulse of “H” voltage (1ms or more as a guideline) is input into the SHDN pin with V OUT fixed at “H” voltage.[PG pin]NM1 and R2 (Fig.1) are connected to the PG pin.NM1 is an Nch MOSFET and is synchronized with the GATE signal of PM2, so NM1 turns OFF when PM2 turns ON.[VOUT pin]PM1, PM2, and R1 (Fig.1), and R2 (Fig.1) and the CL discharge transistor NM2 (Fig.1) are connected to the output pin.PM1 is a Pch MOSFET, and is effective in preventing rush current.PM2 is a Pch MOSFET and functions as the main driver.NM2 is an Nch MOSFET, and is synchronized with the GATE signal of PM1. Therefore, when PM1 turns ON, NM2 turns OFF.[SW Circuit]This circuit transmits the signal input into the SW pin to the internal circuitry.[SHDN Circuit]This circuit transmits the signal input into the SHDN pin to the internal circuitry.[VREF & POR]This circuit supplies the internal circuit reference voltage and is a reset circuit that is input into the logic circuitry.[Type Select]This circuit selects the product type.[Turn-On Delay Counter]This circuit count-controls the time until V OUT is fixed at “H” voltage after “L” voltage is input into the SW pin.During the time until the count is completed, the counter circuit can be returned to the initial state by inputting “H” voltage into the SW pin.[Turn-Off Delay Counter]This circuit only operates on the A type.When V OUT is fixed at “H” voltage, this circuit count-controls the time from input of “L” voltage into the SW pin until V OUT shuts downDuring the time until the count is completed, the counter circuit can be returned to the initial state by inputting “H” voltage into the SW pin.[VREF2 & POR2]This circuit sets the initial state of the V OUT pin.The circuit is set so that V OUT is in the shutdown state when the power is turned on, so there is no need to input “H” voltage into the SHDN pin after power is supply to shut down the output.[Inrush Current Limit]This circuit limits rush current until the V OUT pin voltage reaches V RUSH.[Short Circuit Protect]This circuit outputs a shutdown signal if the V OUT pin voltage reaches V SHORT.[Gate Slope]After the V OUT pin voltage reaches V RUSH, this circuit gradually changes the GATE voltage of PM2 from “H” voltage to “L” voltage.■NOTES ON USE1) For temporary, transitional voltage drop or voltage rising phenomenon. The IC is liable to malfunction should the ratings beexceeded.2) Please use this IC within the specified operating ranges.3) In some cases, power supply noise may cause malfunctioning of the internal counter circuit. Sufficiently reinforce the V IN,V OUT, and GND lines, and connect 0.1μF or higher capacitors near the IC between V IN and GND (V SS), and between V OUT and GND (V SS).4) Turn-On Delay Time characteristics and Turn-Off Delay Time characteristics are increased when using a capacitor largerthan 0.1 μF for CL connected to V OUT - GND (V SS). Sufficiently test actual operation before use.5) When “L” level is input into the SW pin, Operation Current flows. Sufficiently test actual operation before designingperipheral circuits.6) The SW pin and SHDN pin are connected to the gate of a CMOS inverter. If a voltage lower than the V IN pin voltage or avoltage higher than the V SS pin voltage is input into each pin, the flow-through current of the CMOS inverter may appear as supply current.7) If an intermediate voltage between “L” voltage and “H” voltage is input into the SW pin or SHDN pin, starting and stoppingof the IC may become unstable. Sufficiently test peripheral components and other parts to ensure that an intermediate voltage between “L” voltage and “H” voltage is not continuously input for an excessive time into the SW pin and SHDN pin.8) The TEST pin must be connected to GND (V SS).9) When using for an application other than a push-button application, please design the timing to include deviations and testsufficiently with the actual device before use.10) The USP-8B06 is a thin surface-mount package. Therefore, distortion of the board during PCB mounting may betransmitted to the IC chip, which may affect Turn-On Delay Time characteristics and Turn-Off Delay Time characteristics.Sufficiently test actual operation before use.11) Torex places an importance on improving our products and their reliability.We request that users incorporate fail-safe designs and post-aging protection treatment when using Torex products in their systems.(12) SHDN pin "H" "L" Voltage vs. Ambient Temperature(13) PG pin Output Current vs. Ambient Temperature(14) C L Discharge Current vs. Ambient Temperature0.500.550.600.650.700.750.800.850.90-50-25255075100125S H D N p i n "H " "L " V o l t a g e ：V S H D N [V ]Ambient Temperature ：Ta [℃]X C6192SeriesVSHDN "H" Voltage VSHDN "L" VoltageV IN =2.5VC IN =0.1uF, C L =0.1uF0.500.550.600.650.700.750.800.850.90-50-25255075100125S H D N p i n "H " "L " V o l t a g e ：V S H D N [V ]Ambient Temperature ：Ta [℃]X C6192SeriesVSHDN "H" Voltage VSHDN "L" VoltageV IN =3.7VC IN =0.1uF, C L =0.1uF0.500.550.600.650.700.750.800.850.90-50-25255075100125S H D N p i n "H " "L " V o l t a g e ：V S H D N [V ]Ambient Temperature ：Ta [℃]X C6192SeriesVSHDN "H" Voltage VSHDN "H" VoltageV IN =6.0VC IN =0.1uF, C L =0.1uF1.501.601.701.801.902.002.102.20-50-25255075100125P G p i n O u t p u t C u r r e n t ：I P G [m A ]Ambient Temperature ：Ta [℃]X C6192SeriesTurn-Off State, V IN =2.5V, V PG =0.3V C IN =0.1uF, C L =0.1uF1.501.601.701.801.902.002.102.20-50-25255075100125C LD i s c h a r g e C u r r e n t ：I D C G [m A ]Ambient Temperature ：Ta [℃]X C6192SeriesTurn-Off State, V IN =2.5V, V OUT =0.3V C IN =0.1uF, C L =0.1uF■PACKAGING INFORMATIONFor the latest package information go to, /technical-support/packagesPACKAGE OUTLINE / LAND PATTERN THERMAL CHARACTERISTICSUSP-8B06 USP-8B06 PKG High heatdissipation Board USP-8B06 Power Dissipation■MARKING RULE① represents product series.MARK PRODUCT SERIE 2 XC6192******-G② represents Type and Turn-On delay time. MARK Type Turn-On delay time PRODUCT SERIE0 A0.5s XC6192AA****-G 1 1.0sXC6192A1****-G 2 3.0s XC6192A3****-G 3 5.0s XC6192A5****-G 4 B0.5s XC6192BA****-G 5 1.0sXC6192B1****-G 6 3.0s XC6192B3****-G 7 5.0sXC6192B5****-G③ represents Turn-Off delay time.MARK Turn-Off delay timePRODUCT SERIE A 3s XC6192**03**-G B 5s XC6192**05**-G C 10s XC6192**10**-G D 15s XC6192**15**-G 0-XC6192B*NN**-G④,⑤ represents production lot number01~09, 0A~0Z, 11~9Z, A1~A9, AA~AZ, B1~ZZ in order. (G, I, J, O, Q, W excluded) * No character inversion used.。
TTP222电容触摸按键
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Preliminary
键矩阵(KEY-MATRIX)模式框图：
TTP222/TTP222E TonTouchTM
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Preliminary
TTP222/TTP222E TonTouchTM
VDD=3V, Vol=0.6V
VDD=3V, Voh=2.4V
最小 典型 最大 单位 值值值 2.0 3 5.5 V - 440K - Hz - 440K - Hz - 80 160 uA 0 - 0.2 VDD 0.8 - 1.0 VDD - 8 - mA - -4 - mA
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1 0 0 1
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Preliminary
TTP222/TTP222E TonTouchTM
4. 输出模式 大多数输出模式工作在直接(direct)或串行(serial)模式。只有当OPS0=0时，输出模式会为矩
阵(matrix)类型。 输出类型选项
2. 系统初始信号
系统初始或者模式初始
状态
功能
上电复位
系统复位至初始状态
RST=1
串行模式移位计数器复位
3. 中断 对于 MCU 系统，中断请求有益于软件编程。DV 信号提供了考虑周到的输出控制。DV 可为
高电平有效或低电平有效，由 AHL 管脚选择。任何能通过去除抖动(de-bounce)过程的有效输 入都将激活 DV 信号。
Ver :2.2
Preliminary
FPGA可编程逻辑器件芯片XC2V250-5CS144C中文规格书
Spartan-3 FPGA Family: DC and Switching Characteristics
Table 59: Switching Characteristics for the DLL (Cont’d)
Cycle-to-cycle jitter at the CLKIN input
CLKIN_PER_JITT_DLL_LF
Period jitter at the CLKIN input
CLKIN_PER_JITT_DLL_HF
CLKFB_DELAY_VAR_EXT
Allowable variation of off-chip feedback delay from the DCM output to the CLKFB input
18 167 18 167 MHz
48 280 48 280 MHz 36 334 36 334 MHz 1.125 110 1.125 110 MHz 3 185 3 185 MHz
All
– ±100 – ±100 ps
– ±150 – ±150 ps
– ±150 – ±150 ps
– ±150 – ±150 ps
CLKIN_DIVIDE_BY_2 divides the incoming clock frequency by two as it enters the DCM. 4. Industrial temperature range devices have additional requirements for continuous clocking, as specified in Table 64. 5. CLKIN input jitter beyond these limits may cause the DCM to lose lock. See UG331 for more details.
AM612 datasheet智能红外传感器
3
3.3V
4 3 5
R1 NIN 1 1M C1 0.6 8uF/40 0V
VIN 1
+ CE 2 100 uF/25 V GN D
C2 104
1 2 6
ON EE TIM
SEN S
VD D VS S OU T
R5 1M
R7 1M
R9 1M
1
R2 150 R/1W
R6 0R
2 D2 M7
1
C5 10u F/16V
图 2（a1） ONTMIE 脚不接电容
4
南阳森霸光电股份有限公司
图 2（a2） ONTMIE 脚不接电容（a1 的局部放大）
图 2（b） ONTMIE 脚接 100pF 电容到地
图 2（c） ONTMIE 脚接 1nF 电容到地
5
南阳森霸光电股份有限公司
2.检测区域内有温度差的检测对象横切后可进行检测。
8
1
2
3
4
南阳森霸光电股份有限公司
D
典型应用电路
2 5 1
K1
U2 612
D3 1N 4148
4
3
R11 100 R Q1 2N 7002 4
LIN 1
12V
C
U1
2
VO UT D1 ZM M12 + CE 1 220 uF/50 V 2
输入高电压 输入电流
0.4Vdd -1
V V
μA
OEN电压高到低的阈值电平 OEN电压低到高的阈值电平
1 7 0.44 64
VSS<VIN<VDD
振荡器和滤波器 低通滤波器截止频率
深圳市晶科鑫实业有限公司产品说明书：SMD3225 OSC 32.000MHZ 3.3V 15PF
SERIES 3N, SEAM SEALED CERAMIC 3.2X2.5MM SURFACE MOUNT PACKAGETel ：*************-837(Mr.huang)Fax ：0755-******** .cnADD: Room 1204~1206,Building 3C, TianAn Cloud Park Phase 1,Bantian, Longgang District, Shenzhen深圳市晶科鑫实业有限公司Shenzhen Crystal Technology Industrial Co., LtdAPPROVAL SHEETCUSTOMER P/N:TYPE: SMD CRYSTALDESCRIPTION： SMD3225 OSC 32.000MHZ 3.3V 15PF -40~85℃ P N/ SJK： 3N 32000G33YC ENVIRONMENTAL： ■RoHS■REACH■HF□PAHS□otherREVISION： A1 2017-5-10 MSL：Levels 1SIGNATURESUPPLIERCUSTOMER IssueCheckApproveQACheckApproveSJK 186****8994（Mr.Huang）Signature FAE_EMAIL *********************DateDate Approve： □accept□unacceptedNote:SERIES 3N, SEAM SEALED CERAMIC 3.2X2.5MM SURFACE MOUNT PACKAGE1.ELECTRICAL SPECIFICATIONSStandard atmospheric conditionsUnless otherwise specified, the standard range of atmospheric conditions for making measurement and tests are as follow:Ambient temperature : 25±5℃Relative humidity : 40%~70%If there is any doubt about the results, measurement shall be made within the following limits: Ambient temperature : 25±3℃Relative humidity : 40%~70%Measure equipmentElectrical characteristics measured by MD 37WX-05M or equivalen t.Crystal cutting typeThe crystal is using AT CUT (thickness shear mode).ParametersSYMElectrical Spec.NotesMINTYPE MAXUNITS 1 Nominal Frequency27.000000MHZ 2 Frequency StabilityAT 25℃±10 PPM Over Operating Temperature range±20PPM -40～85℃3 Operating Temperature Topr -4025 85 ℃4 Storage Temperature Tstg -55~ 125 ℃5 Supply Voltage VDD 3.3 / ±10%V 1.62~3.63 available 6 Input Current Icc5mA7 Enable Control YesPad18 Output Load : CMOS CL 15pF 9 Output Voltage High VoH 90% VddV 10 Output Voltage LowVoL 10% Vdd V 11 Rise Time Tr 5 ns 10%→90%VDDLevel12 Fall Time Tf 5 ns 90%→10%VDDLevel13 Symmetry (Duty ratio)TH/T 45~55 % 14 Start-up Time Tosc 10 ms 15 Enable Voltage High Vhi 70% VddV 16 Disable Voltage LowVlo30% VddV 17 Aging±3ppm/yr. 1st. Year at 25℃ 18 Output Disable Delay Time T off 150 us 19 Output Enable Delay Time T on150 us 20Phase Jitter （12KHZ~20MHZ ）0.51.0psTel ：*************-837(Mr.huang)Fax ：0755-******** .cnADD: Room 1204~1206,Building 3C, TianAn Cloud Park Phase 1,Bantian, Longgang District, ShenzhenSERIES 3N, SEAM SEALED CERAMIC 3.2X2.5MM SURFACE MOUNT PACKAGE 2.DIMENSIONS (Units :mm)3.MARKING4.TEST CIRCUITTel：*************-837(Mr.huang)Fax：0755-******** ADD: Room 1204~1206,Building 3C, TianAn Cloud Park Phase 1,Bantian, Longgang District, ShenzhenSERIES 3N, SEAM SEALED CERAMIC 3.2X2.5MM SURFACE MOUNT PACKAGE5.WAVEFORM CONDITIONS6.OUTPUT ENABLE / DISABLE DELAYThe following figure shows the oscillator timing during normal operation . Note that when the device is in standby,the oscillator stops. When standby is released, the oscillator starts and stable oscillator output occurs after ashort delay7.SUGGESTED REFLOW PROFILETotal time : 200 sec. Max / Solder melting point :220 ℃Tel ：*************-837(Mr.huang)Fax ：0755-******** .cnADD: Room 1204~1206,Building 3C, TianAn Cloud Park Phase 1,Bantian, Longgang District, ShenzhenSERIES 3N, SEAM SEALED CERAMIC 3.2X2.5MM SURFACE MOUNT PACKAGE8.RELIABILITY TEST SPECIFICATION 1.Mechanical EnduranceNo. Test Item Test MethodsREF. DOC 1 Drop Test 75 cm height,3 times on concrete floor . JIS C6701 2Mechanical ShockDevice are shocked to half sine wave ( 1000G ) three mutuallyperpendicular axes each 3 times. 0.5m sec.duration timeMIL-STD-202F3 Vibration Frequency range 10 ~ 2000 HzAmplitude 1.52 mm/20G Sweep time 20 minutesPerpendicular axes each test time 4 Hrs(Total test time 12 Hrs)MIL-STD-883E4 Gross Leak Standard Sample For Automatic Gross LeakDetector, Test Pressure: 2kg / cm2 MIL-STD-883E5Fine LeakHelium Bomging 4.5 kgf / cm 2 for 2 Hrs 6 Solderability Temperature 245 ℃ ± 5℃ Immersing depth 0.5 mm minimum Immersion time 5 ± 1 seconds Flux Rosin resin methyl alcoholsolvent ( 1 : 4 )MIL-STD-883E2.Environmental EnduranceNo. Test Item Test MethodsREF. DOC 1Resistance To Soldering Heat Pre-heat temperature 125 ℃ Pre-heat time 60 ~ 120 sec. Test temperature 260 ± 5 ℃Test time 10 ± 1 sec. MIL-STD-202F2 High Temp. Storage +125 ℃ ±3 ℃ for 1000 ± 12 HrsMIL-STD-883E3Low Temp. Storage-40 ℃ ± 3 ℃ for 1000 ± 12 Hrs4 Thermal Shock Total 100 cycles of the following temperature cycleMIL-STD-883E5 Pressure CookerStorage 121 ± 3℃ , RH100% , 2 bar , 240 Hrs JIS C6701 6 High Temp ＆Humidity85℃ ± 3℃, RH 85% , 1000 HrsJIS C5023备注Tel ：*************-837(Mr.huang)Fax ：0755-******** .cnADD: Room 1204~1206,Building 3C, TianAn Cloud Park Phase 1,Bantian, Longgang District, Shenzhen。
FPGA可编程逻辑器件芯片XC2S300E-FG456中文规格书
YS806功能说明REV02
RS
CS
PAD
CS
6.3 RC-灵敏度选择
Bit name
Reset
Function
Maximum On Time 1010
按键最长输出时间，范围：0到15；0-关闭，1-4秒，15-60秒
Sample Time
10
按键取样时间，范围：0到3,0-128,1-256,2-512,3-1024
2、芯片特征
y 电压范围：2.7V～5.5V y 输出接口方式：
− 直接输出方式：一对一直接输出，输出低电平有效，复位状态时高电平， − IIC通讯接口 y 芯片优势： − 防水性能优良 − 抗干扰强，防辐射性能好； − 电源稳定性好； − 对布线要求不高； − 灵敏度分为 8 个等级可调，通过外接电阻设置； − 产品符合 ROHS 标准； − 适应多种触摸介质； − 16OP 16封装。 y 应用
CS5 CS6
VDD GND
OUT5/CS7 8
9
OUT6/CS8
图1 YS806 管脚图
3
电容感应式触摸按键芯片
5.2 管脚说明：
YS806 管脚说明
脚位 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
管脚名称 OUT3 CS1 CS2 CS3 CS4 CS5 CS6 OUT5/CS7 OUT6/CS8 GND VDD RES OUT2/SCL OUT1/SDA OUT4/INT RC
USB转串口 RD232R datasheet
Document No.: RD_000062RD232R USB UART IC Datasheet Version 2.311.3 USB CompliantThe RD232R is fully compliant with the USB 2.0 specification and has been given the USB-IF Test-ID (TID).Table of Contents1 Typical Applications (2)1.1 Driver Support (2)1.2 Part Numbers (2)Note: Packing codes for xxxx is: (2)1.3 USB Compliant (3)2 RD232R Block Dia gram (4)3 Device Pin Out and Signal Description (7)3.1 28-LD SSOP Package (7)3.2 SSOP Package Pin Out Description (7)3.3 QFN-32 Package (10)3.4 QFN-32 Package Signal Description (10)3.5 CBUS Signal Options (13)4 Function Description (14)4.1 Key Features (14)4.2 Functional Block Descriptions (15)5 Devices Characteristics and Ratings (17)5.1 Absolute Maximum Ratings (17)5.2 DC Characteristics (18)5.3 EEPROM Reliability Characteristics (21)5.4 Internal Clock Characteristics (21)6 USB Power Configurations (23)6.1 USB Bus Powered Configuration (23)6.2 Self Powered Configuration (24)6.3 USB Bus Powered with Power Switching Configuration (25)6.4 USB Bus Powered with Selectable External Logic Supply (26)7 Application E xa mples (27)7.1 USB to RS232 Converter (27)7.2 USB to RS485 Coverter (28)7.3 USB to RS422 Converter (29)7.4 USB to MCU UART Interface (30)7.5 LED Interface (31)7.6 Using the External Oscillator (32)8 Internal EEPROM Configuration (33)9 Package Parameters (35)9.1 SSOP-28 Package Dimensions (35)Document No.: RD_000062RD232R USB UART IC Datasheet Version 2.31Clearance No.: CORECHIPS# 51 9.2 QFN-32 Package Dimensions (36)9.3 QFN-32 Package Typical Pad Layout (37)9.4 QFN-32 Package Typical Solder Paste Diagram (37)9.5 Solder Reflow Profile (38)Appendix A - List of Figures and Tables (39)Figure 3.1 SSOP Package Pin Out and Schematic SymbolNote: The convention used throughout this document for active low signals is the signal name followed by aDescr i p tio nUSB Data Signal Plus, incorporating internal series resistor and 1.5k pull u pUSB Data Signal Minus, incorporating internal series resistor.Descr i p tio n+1.8V to +5.5V supply to the UART Interface and CBUS group pins (1...3, 5, 6,9...14, 22, 23). In USB bus powered designs connect this pin to 3V3OUT pin to driveout at +3.3V levels, or connect to VCC to drive out at 5V CMOS level. This pin canalso be supplied with an external +1.8V to +2.8V supply in order to drive outputs atlower levels. It should be noted that in this case this supply should originate fromthe same source as the supply to VCC. This means that in bus powered designs aregulator which is supplied by the +5V on the USB bus should be used.Figure 3.2 QFN-32 Package Pin Out and schematic symbol3.4 QFN-32 SignalPin No.DescriptionUSBDP I/O USB Data Signal Plus, incorporating internal series resistor and 1.5k pull up r esist oto +3.3V.USBDM I/O USB Data Signal Minus, incorporating internal series resistor.Table 3.5 USB Interface GroupPin DescriptionVCCIO PWR +1.8V to +5.5V supply for the UART Interface and CBUS group pins (2, 3,6,7,8,9,10 11, 21, 22, 30,31,32). In USB bus powered designs connect this pin to3V3OUTto drive out at +3.3V levels, or connect to VCC to drive out at +5V CMOS level. This pin can also be supplied with an external +1.8V to +2.8V supply in order to drive out at lower levels. It should be noted that in this case this supply should originate from the same source as the supply to VCC. This means that in bus powered designs a regulator which is supplied by the +5V on the USB bus should be used.4 Function DescriptionThe RD232R is a USB to serial UART interface device which simplifies USB to serial designs and reduces external component count by fully integrating an external EEPROM, USB termination resistors and an integrated clock circuit which requires no external crystal, into the device. It has been designed to operate efficiently with a USB host controller by using as little as possible of the total USB bandwidth available.4.1 Key FeaturesFunctional Integration. Fully integrated EEPROM, USB termination resistors, clock generation, AVCC filtering, POR and LDO regulator.Configurable CBUS I/O Pin Options. The fully integrated EEPROM allows configuration of the Control Bus (CBUS) functionality, signal inversion and drive strength selection. There are 5 configurable CBUS I/O pins. These configurable options are1. TXDEN - transmit enable for RS485 designs.2. PWREN# - Power control for high power, bus powered designs.3. TXLED# - for pulsing an LED upon transmission of data.4. RXLED# - for pulsing an LED upon receiving data.5. TX&RXLED# - which will pulse an LED upon transmission OR reception of data.6. SLEEP# - indicates that the device going into USB suspend mode.7. CLK48 / CLK24 / CLK12 / CLK6 - 48MHz, 24MHz, 12MHz, and 6MHz clock output signaloptions.The CBUS pins can also be individually configured as GPIO pins, similar to asynchronous bit bang mode. It is possible to use this mode while the UART interface is being used, thus providing up to 4 general purpose I/O pins which are available during normal operation. An application note, available from CORECHIPS website () describes this feature.The CBUS lines can be configured with any one of these output options by setting bits in the internal EEPROM. The device is supplied with the most commonly used pin definitions pre-programmed - see Section 8 for details.Asynchronous Bit Bang Mode with RD# and WR# Strobes. The RD232R supports CORECHIPS`s previous chip generation bit-bang mode. In bit-bang mode, the eight UART lines can be switched from the regular interface mode to an 8-bit general purpose I/O port. Data packets can be sent to the device and they will be sequentially sent to the interface at a rate controlled by an internal timer (equivalent to the baud rate pre-scaler). With the RD232R device this mode has been enhanced by outputting the internal RD# and WR# strobes signals which can be used to allow external logic to be clocked by accesses to the bit-bang I/O bus. This option will be described more fully in a separate application note available from CORECHIPS website ().Synchronous Bit Bang Mode. The RD232R supports synchronous bit bang mode. This mode differs from asynchronous bit bang mode in that the interface pins are only read when the device is written to. This makes it easier for the controlling program to measure the response to an output stimulus as the data returned is synchronous to the output data. An application note, available from CORECHIPS website() describes this feature.CoreChips-ID™. The RD232R also includes the new CoreChips-ID™security dongle feature. This CoreChips-ID™ feature allows a unique number to be burnt into each device during manufacture. This number cannot be reprogrammed. This number is only readable over USB and forms a basis of a security dongle which can be used to protect any customer application software being copied. This allows the possibility of using the RD232R in a dongle for software licensing. Further to this, a renewable license scheme can be implemented based on the CoreChips-ID™ number when encrypted with other information. This encrypted number can be stored in the user area of the RD232R internal EEPROM, and can be decrypted, then compared with the protected CoreChips-ID™ to verify that a license is valid. Web based applications can be used to maintain product licensing this way. An application note, available from CORECHIPS website () describes this feature.The RD232R is capable of operating at a voltage supply between +3.3V and +5V with a nominal operational mode current of 15mA and a nominal USB suspend mode current of 70µA. This allows greater margin for peripheral designs to meet the USB suspend mode current limit of 2.5mA. An integrated level converter within the UART interface allows the RD232R to interface to UART logic running at +1.8V, 2.5V,+3.3V or +5V.Document No.: RD_000062RD232R USB UART IC Datasheet Version 2.31Clearance No.: CORECHIPS# 51 4.2 Functional Block DescriptionsThe following paragraphs detail each function within the RD232R. Please refer to the block diagram shown in Figure 2.1Internal EEPROM. The internal EEPROM in the RD232R is used to store USB Vendor ID (VID), Product ID (PID), device serial number, product description string and various other USB configuration descriptors. The internal EEPROM is also used to configure the CBUS pin functions. The RD232R is supplied with the internal EEPROM pre-programmed as described in Section 8. A user area of the internal EEPROM is available to system designers to allow storing additional data. The internal EEPROM descriptors can be programmed in circuit, over USB without any additional voltage requirement. It can be programmed using the CORECHIPS utility software called MPROG, which can be downloaded from CORECHIPS Utilities on the CORECHIPS website ().+3.3V LDO Regulator. The +3.3V LDO regulator generates the +3.3V reference voltage for driving the USB transceiver cell output buffers. It requires an external decoupling capacitor to be attached to the3V3OUT regulator output pin. It also provides +3.3V power to the 1.5kΩ internal pull up resistor on USBDP. The main function of the LDO is to power the USB Transceiver and the Reset Generator Cells rather than to power external logic. However, it can be used to supply external circuitry requiring a+3.3V nominal supply with a maximum current of 50mA.USB Transceiver. The USB Transceiver Cell provides the USB 1.1 / USB 2.0 full-speed physical interface to the USB cable. The output drivers provide +3.3V level slew rate control signalling, whilst a differential input receiver and two single ended input receivers provide USB data in, Single-Ended-0 (SE0) and USB reset detection conditions respectfully. This function also incorporates the internal USB series termination resistors on the USB data lines and a 1.5kΩ pull up resistor on USBDP.USB DPLL. The USB DPLL cell locks on to the incoming NRZI USB data and generates recovered clockand data signals for the Serial Interface Engine (SIE) block.Internal 12MHz Oscillator - The Internal 12MHz Oscillator cell generates a 12MHz reference clock. This provides an input to the x4 Clock Multiplier function. The 12MHz Oscillator is also used as the reference clock for the SIE, USB Protocol Engine and UART FIFO controller blocks.Clock Multiplier / Divider. The Clock Multiplier / Divider takes the 12MHz input from the Internal Oscillator function and generates the 48MHz, 24MHz, 12MHz and 6MHz reference clock signals. The 48Mz clock reference is used by the USB DPLL and the Baud Rate Generator blocks.Serial Interface Engine (SIE). The Serial Interface Engine (SIE) block performs the parallel to serial and serial to parallel conversion of the USB data. In accordance with the USB 2.0 specification, it performsbit stuffing/un-stuffing and CRC5/CRC16 generation. It also checks the CRC on the USB data stream.USB Protocol Engine. The USB Protocol Engine manages the data stream from the device USB control endpoint. It handles the low level USB protocol requests generated by the USB host controller and the commands for controlling the functional parameters of the UART in accordance with the USB 2.0 specification chapter 9.FIFO RX Buffer (128 bytes). Data sent from the USB host controller to the UART via the USB data OUT endpoint is stored in the FIFO RX (receive) buffer. Data is removed from the buffer to the UART transmit register under control of the UART FIFO controller. (Rx relative to the USB interface).FIFO TX Buffer (256 bytes). Data from the UART receive register is stored in the TX buffer. The USB host controller removes data from the FIFO TX Buffer by sending a USB request for data from the device data IN endpoint. (Tx relative to the USB interface).UART FIFO Controller. The UART FIFO controller handles the transfer of data between the FIFO RX and TX buffers and the UART transmit and receive registers.UART Controller with Programmable Signal Inversion and High Drive. Together with the UART FIFO Controller the UART Controller handles the transfer of data between the FIFO RX and FIFO TXbuffers and the UART transmit and receive registers. It performs asynchronous 7 or 8 bit parallel to serialand serial to parallel conversion of the data on the RS232 (or RS422 or RS485) interface.Control signals supported by UART mode include RTS, CTS, DSR, DTR, DCD and RI. The UART Controller also provides a transmitter enable control signal pin option (TXDEN) to assist with interfacing to RS485 transceivers. RTS/CTS, DSR/DTR and X ON / X OFF handshaking options are also supported. Handshaking is handled in hardware to ensure fast response times. The UART interface also supports the RS232 BREAK setting and detection conditions.Figure 6.1 Bus Powered ConfigurationFigure 6.1 Illustrates the RD232R in a typical USB bus powered design configuration. A USB bus powered device gets its power from the USB bus. Basic rules for USB bus power devices are as follows : On plug-in to USB, the device should draw no more current than 100mA.In USB Suspend mode the device should draw no more than 2.5mA.A bus powered high power USB device (one that draws more than 100mA) should use one of theCBUS pins configured as PWREN# and use it to keep the current below 100mA on plug-in and2.5mA on USB suspend.A device that consumes more than 100mA cannot be plugged into a USB bus powered hub.No device can draw more than 500mA from the USB bus.The power descriptors in the internal EEPROM of the RD232R should be programmed to match the current drawn by the device.A ferrite bead is connected in series with the USB power supply to reduce EMI noise from the RD232R and associated circuitry being radiated down the USB cable to the USB host. The value of the Ferrite Bead depends on the total current drawn by the application. A suitable range of Ferrite Beads is available from Steward (), for example Steward Part # MI0805K400R-10.Note: If using PWREN# (available using the CBUS) the pin should be pulled to VCCIO using a 10kFigure 6.2 Self Powered ConfigurationFigure 6.2 illustrates the RD232R in a typical USB self powered configuration. A USB self powered device gets its power from its own power supply, VCC, and does not draw current from the USB bus. The basic rules for USB self powered devices are as follows :A self powered device should not force current down the USB bus when the USB host or hubcontroller is powered down.A self powered device can use as much current as it needs during normal operation and USBsuspend as it has its own power supply.A self powered device can be used with any USB host, a bus powered USB hub or a self powered USBhub.The power descriptor in the internal EEPROM of the RD232R should be programmed to a value of zero (self powered).In order to comply with the first requirement above, the USB bus power (pin 1) is used to control the RESET# pin of the RD232R device. When the USB host or hub is powered up an internal 1.5kΩ resistor on USBDP is pulled up to +3.3V (generated using the 4K7 and 10k resistor network), thus identifying the device as a full speed device to the USB host or hub. When the USB host or hub is powered off, RESET# will be low and the RD232R is held in reset. Since RESET# is low, the internal 1.5kΩ resistor is not pulledup to any power supply (hub or host is powered down), so no current flows down USBDP via the 1.5k pull-up resistor. Failure to do this may cause some USB host or hub controllers to power up erratically. Figure 6.2 illustrates a self powered design which has a +4V to +5.5V supply.When the RD232R is in reset, the UART interface I/O pins are tri-stated. Input pins have internal pull-up resistors to VCCIO, so they will gently pull high unless driven by some external logic.When using internal RD232R oscillator the VCC supply voltage range must be +4.0V to 5.5V.3. When using external oscillator the VCC supply voltage range must be +3.3V to 5.5V Any designwhich interfaces to +3.3 V or +1.8V would be having a +3.3V or +1.8V supply to VCCIO.Figure 6.3 Bus Powered with Power Switching ConfigurationA requirement of USB bus powered applications, is when in USB suspend mode, the application draws a total current of less than 2.5mA. This requirement includes external logic. Some external logic has the ability to power itself down into a low current state by monitoring the PWREN# signal. For external logic that cannot power itself down in this way, the RD232R provides a simple but effective method of turning off power during the USB suspend mode.Figure 6.3 shows an example of using a discrete P-Channel MOSFET to control the power to external logic. A suitable device to do this is an International Rectifier () IRLML6402, or equivalent. It recommended that a “soft start circuit consisting of a 1kΩ series resistor and a 0.1limit the current surge when the MOSFET turns on. Without the soft start circuit it is possible that the transient power surge, caused when the MOSFET switches on, will reset the RD232R or the USB host/hub controller. The soft start circuit example shown in Figure 6.3 powers up with a slew rate of approximaely12.5V/ms. Thus supply voltage to external logic transitions from GND to +5V in approximately 400 microseconds.As an alternative to the MOSFET, a dedicated power switch IC with inbuilt “soft-start” can be used. A suitable power switch IC for such an application is the Micrel () MIC2025-2BM orWith power switching controlled designs the following should be noted:The external logic to which the power is being switched should have its own reset circuitry to automatically reset the logic when power is re-applied when moving out of suspend mode.Set the Pull-down on Suspend option in the internal RD232R EEPROM.iii) One of the CBUS Pins should be configured as PWREN# in the internal RD232R EEPROM, and used to switch the power supply to the external circuitry. This should be pulled high through a 10 kFigure 6.4 USB Bus Powered with +3.3V or +5V External Logic Power SupplyFigure 6.4 illustrates a USB bus power application with selectable external logic supply. The external logic can be selected between +3.3V and +5V using the jumper switch. This jumper is used to allow tto be interfaced with a +3.3V or +5V logic devices. The VCCIO pin is either supplied with +5V from the USB bus (jumper pins1 and 2 connected), or from the +3.3V output from the RD232R 3V3OUT pin (jumper pins 2 and 3 connected). The supply to VCCIO is also used to supply external logic.With bus powered applications, the following should be noted:To comply with the 2.5mA current supply limit during USB suspend mode, PWREN# or SLEEP# signals should be used to power down external logic in this mode. If this is not possible, use the configuration shown in Section 6.3.The maximum current sourced from the USB bus during normal operation should not exceed 100mA, otherwise a bus powered design with power switching (Section 6.3) should be used.Another possible configuration could use a discrete low dropout (LDO) regulator which is supplied by the 5V on the USB bus to supply between +1.8V and +2.8V to the VCCIO pin and to the external logic. In this case VCC would be supplied with the +5V from the USB bus and the VCCIO would be supplied fromthe output of the LDO regulator. This results in the RD232R I/O pins driving out at between +1.8V andFor a USB bus powered application, it is important to consider the following when selecting the regulator: The regulator must be capable of sustaining its output voltage with an input voltage of +4.35V. An Low Drop Out (LDO) regulator should be selected.The quiescent current of the regulator must be low enough to meet the total current requirement ofFigure 7.1 Application Example showing USB to RS232 ConverterAn example of using the RD232R as a USB to RS232 converter is illustrated in Figure 7.1. In this application, a TTL to RS232 Level Converter IC is used on the serial UART interface of the RD232R to convert the TTL levels of the RD232R to RS232 levels. This level shift can be done using the popular “213” series of TTL to RS232 level converters. These “213” devices typically have 4 transmitters and 5 receivers in a 28-LD SSOP package and feature an in-built voltage converter to convert the +5V (nominal) VCC to the +/- 9 volts required by RS232. A useful feature of these devices is the SHDN# pin which can be used to power down the device to a low quiescent current during USB suspend mode.A suitable level shifting device is the Sipex SP213EHCA which is capable of RS232 communication at up to 500k baud. If a lower baud rate is acceptable, then several pin compatible alternatives are available such as the Sipex SP213ECA, the Maxim MAX213CAI and the Analogue Devices ADM213E, which are all suitable for communication at up to 115.2k baud. If a higher baud rate is required, the Maxim MAX3245CAI device is capable of RS232 communication rates up to 1Mbaud. Note that the MAX3245 is not pin compatible with the 213 series devices and that the SHDN pin on the MAX device is active high and should be connect toFigure 7.2 Application Example Showing USB to RS485 ConverterAn example of using the RD232R as a USB to RS485 converter is shown in Figure 7.2. In this application, a TTL to RS485 level converter IC is used on the serial UART interface of the RD232R to convert the TTL levels of the RD232R to RS485 levels.This example uses the Sipex SP481 device. Equivalent devices are available from Maxim and Analogue Devices. The SP481 is a RS485 device in a compact 8 pin SOP package. It has separate enables on both the transmitter and receiver. With RS485, the transmitter is only enabled when a character is being transmitted from the UART. The TXDEN signal CBUS pin option on the RD232R is provided for exactly this purpose and so the transmitter enable is wired to CBUS2 which has been configured as TXDEN. Similarly, CBUS3been configured as PWREN#. This signal is used to control the SP481`s receiver enable. The receiver enable is active low, so it is wired to the PWREN# pin to disable the receiver when in USB suspend mode. CBUS2 = TXDEN and CBUS3 = PWREN# are the default device configurations of the RD232R pins.RS485 is a multi-drop network; so many devices can communicate with each other over a two wire cable interface. The RS485 cable requires to be terminated at each end of the cable. A link (which provides the termination) allows the cable to be terminated if the SP481 is physically positioned at either end of In this example the data transmitted by the RD232R is also present on the receive path of the SP481.This is a common feature of RS485 and requires the application software to remove the transmitted data from the received data stream. With the RD232R it is possible to do this entirely in hardware by modifying theFigure 7.3 USB to RS422 Converter ConfigurationAn example of using the RD232R as a USB to RS422 converter is shown in Figure 7.3. In this application, two TTL to RS422 Level Converter ICs are used on the serial UART interface of the RD232R to convert the TTL levels of the RD232R to RS422 levels. There are many suitable level converter devices available. This example uses Sipex SP491 devices which have enables on both the transmitter and receiver. Since the SP491 transmitter enable is active high, it is connected to a CBUS pin in SLEEP# configuration. The SP491 receiver enable is active low and is therefore connected to a CBUS pin PWREN# configuration. This ensures that when both the SP491 transmitters and receivers are enabled then the device is active, and when the device is in USB suspend mode, the SP491 transmitters and receivers are disabled. If a similar application is used, but the design is USB BUS powered, it may be necessary to use a P-Channel logic level MOSFET (controlled by PWREN#) in the VCC line of the SP491 devices to ensure that the USB standby current of 2.5mA is met. The SP491 is specified to transmit and receive data at a rate of up to 5 Mbaud. In this example the maximum data rate is limited to 3 Mbaud by the RD232R.Figure 7.4 USB to MCU UART InterfaceAn example of using the RD232R as a USB to Microcontroller (MCU) UART interface is shown in Figure7.4. In this application the RD232R uses TXD and RXD for transmission and reception of data, and RTS# / CTS# signals for hardware handshaking. Also in this example CBUS0 has been configured as a 12MHz output Optionally, RI# could be connected to another I/O pin on the MCU and used to wake up the USB host controller from suspend mode. If the MCU is handling power management functions, then a CBUS pin can be configured as PWREN# and would also be connected to an I/O pin of the MCU.Figure 7.5 Dual LED ConfigurationAn example of using the RD232R to drive LEDs is shown in Figure 7.5. In this application one of the CBUS pins is used to indicate transmission of data (TXLED#) and another is used to indicate receiving data (RXLED#). When data is being transmitted or received the respective pins will drive from tri-state to low in order to provide indication on the LEDs of data transfer. A digital one-shot is used so that even a small percentage of data transfer is visible to the end user.Figure 7.6 Single LED ConfigurationAnother example of using the RD232R to drive LEDs is shown in Figure 7.6. In this example one of the CBUS pins is used to indicate when data is being transmitted or received by the device (TX&RXLED). In this configuration the RD232R will drive only a single LED.7.6 Using the External OscillatorThe RD232R defaults to operating using its own internal oscillator. This requires that the device is powered with VCC(min)=+4.0V. This supply voltage can be taken from the USB VBUS. Applications which require using an external oscillator, VCC= +3.3V, must do so in the following order:1. When device powered for the very first time, it must have VCC > +4.0V. This supply is availablefrom the USB VBUS supply = +5.0V.2. The EEPROM must then be programmed to enable external oscillator. This EEPROM modificationcannot be done using the CORECHIPS programming utility, MPROG. The EEPROM can only be re- configured from a custom application. Please refer to the applications note on the CORECHIPSwebsite () on how to do this.3. The RD232R can then be powered from VCC=+3.3V and an external oscillator. This can be doneusing a link to switch the VCC supply.The RD232R will fail to operate when the internal oscillator has been disabled, but no external oscillator has been connected.Figure 9.1 SSOP-28 Package DimensionsThe RD232RL is supplied in a RoHS compliant 28 pin SSOP package. The package is lead (Pb) free and uses a “green” compound. The package is fully compliant with European Union directive 2002/95/EC. This package is nominally 5.30mm x 10.20mm body (7.80mm x 10.20mm including pins). The pins are on a 0.65 mm pitch. The above mechanical drawing shows the SSOP-28 package.All dimensions are in millimetres.The date code format is YYXX where XX = 2 digit week number, YY = 2 digit year number. This is followed by the revision number.Figure 9.2 QFN-32 Package DimensionsThe RD232RQ is supplied in a RoHS compliant leadless QFN-32 package. The package is lead ( Pb ) free, and uses a “green” compound. The package is fully compliant with European Union directive 2002/95/EC. This package is nominally 5.00mm x 5.00mm. The solder pads are on a 0.50mm pitch. The above mechanical drawing shows the QFN-32 package. All dimensions are in millimetres.The centre pad on the base of the RD232RQ is not internally connected, and can be left unconnected, or connected to ground (recommended).The date code format is YYXX where XX = 2 digit week number, YY = 2 digit year number.The code XXXXXXX is the manufacturing LOT code.。
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三通道电容式触摸键控制芯片
XC2863
目录
1概述 (3)
1.1 特性 (3)
1.2 系统框图 (4)
2管脚定义 (5)
3功能描述 (6)
4电气特性 (7)
5关键特性 (8)
5.1 环境自适应能力 (8)
5.1.1环境漂移跟随 (8)
5.1.2环境突变校准 (8)
6应用指南 (9)
7PCB设计 (10)
7.1 触摸键设计 (10)
7.1.1触摸键 (10)
7.1.2触摸键的常用结构 (10)
7.1.3触摸键设计 (11)
7.2 PCB布线 (11)
8封装 (12)
1概述
XC2863是一款支持宽工作电压范围的三输入三输出电容式触摸键控制芯片。
XC2863内部集成高分辨率触摸检测模块和专用信号处理电路，以保证芯片对环境变化具有灵敏的自动识别和跟踪功能，且内置特殊算法以实现防水、抗干扰等需求。
该芯片可满足用户在复杂应用中对稳定性、灵敏度、功耗、响应速度、防水、带水操作、抗震动、抗电磁干扰等方面的高体验要求。
XC2863为方便用户在应用中可对触摸键的灵敏度进行自主控制，特设置了灵敏度控制位。
用户只需在PCB设计中对这个管脚的逻辑电平值进行设置，就能自由选择在具体应用中芯片体现出的检测灵敏度。
XC2863还内置了上电复位及电源保护电路，在典型应用中可无需任何外部器件，也无需软件、程序或参数烧录。
芯片应用的开发过程非常简单，最大限度的降低了方案成本。
XC2863可广泛适用于遥控器、灯具调光、各类开关以及小家电和家用电器控制界面等应用中。
1.1特性
工作电压：2.5V~5.5V
三个高灵敏度的触摸检测通道
无需进行参数烧录
响应速度快
抗电磁干扰能力强
防水及带水操作功能
独特的环境跟踪和自适应能力
低功耗（典型工作电流< 25uA）
内置上电复位（POR）和电源保护电路
CMOS电平输出
1.2系统框图
XC2863包含PMU和Touch Key Core两个部分，其系统框图如图1所示。
图1 XC2863的系统框图
2管脚定义
XC2863采用SOP8封装，管脚分布如图2所示。
图2 XC2863管脚分布
XC2863的管脚描述如表1所示。
注1：触摸检测通道与触摸键相连，连接示意图详见应用指南部分。
3功能描述
XC2863具有3个触摸检测通道(IN0，IN1和IN2)和3个触摸检测的输出管脚(OUT0，OUT1和OUT2)。
输出管脚OUT0、OUT1和OUT2为CMOS电平输出，输出的逻辑高电平为AVDD。
当触摸检测通道IN0，IN1或IN2上检测到触摸，触摸检测通道对应的输出管脚OUT0，OUT1或OUT2输出逻辑高电平，否则输出逻辑低电平
4电气特性
XC2863的电气特性如表2所示。
5关键特性
5.1环境自适应能力
当外界环境发生突变或缓慢变化时，XC2863都能够监测并自适应这种变化，通过内部算法进行自动调整从而始终保持最佳的灵敏度，使得芯片在复杂多变的应用环境中能够一直准确地进行触摸识别和判断。
XC2863的以下两项技术保证了其对环境的自适应特性。
5.1.1环境漂移跟随
XC2863的环境漂移跟随技术实时监测外部环境的缓慢变化，并自动调整其检测灵敏度以适应该变化，确保触摸体验不受外部环境影响。
5.1.2环境突变校准
XC2863的环境突变校准技术可以应对外部环境的突然变化。
XC2863自动识别外部环境突变所引起的触摸操作，并通过自动校准消除其影响。
6应用指南
触摸键
触摸键的应用中，触摸检测通道IN直接与触摸键的PCB设计相连接。
触摸键的典型应用如图3。
图3 触摸键典型应用
说明：
图中KEY0、KEY1和KEY2为PCB上的触摸键设计，分别与触摸检测通道IN0、IN1和IN2相连。
图中虚线框中的电阻R0、R1、R2和发光二极管LED0、LED1、LED2，仅为示例（如在需要用LED指示相应的OUT输出结果时可以使用）。
在AVDD和地之间接1uF的滤波电容（如图中虚线电容C1所示）。
OUT0、OUT1和OUT2为CMOS电平输出，具备驱动能力，均可与其他芯片连接。
7 PCB设计
7.1触摸键设计
7.1.1触摸键
触摸键一般由感应电极和覆盖在感应电极上的介质构成。
在某些应用中，感应电极上没有覆盖介质，感应电极直接充当触摸键。
触摸键的感应电极上的最顶层的介质层通常称为面板。
触摸键的感应电极通常由电阻率低的导电材料制作，常用的材料包括铜、ITO 等。
几乎所有的绝缘材料都可以用来制造触摸键的介质层。
相同厚度下，介电常数越大，触摸动作所引起的触摸键的电容的变化越明显，即表现为更灵敏。
7.1.2触摸键的常用结构
a.平面结构
平面结构中，触摸键的感应电极和到触摸检测通道的连线处于同一平面。
平面结构的触摸键的示意图如图5所示。
图5 平面结构的触摸键示意图
平面结构中，感应电极的形状没有特别的要求，但要确保在手指等触摸时，能够覆盖足够多的感应电极面积，保证触摸能够产生足够大的电容。
常用的感应电极形状有圆形、正方形、矩形等，如图6所示。
图6 常用电极形状
平面结构的触摸键，需要特别注意感应电极与所覆盖的介质层的间距。
一般而言，感应电极与介质层之间的间距越小，相同触摸所能产生的电容就越大。
这是因为，如果感应电极和介质层之间存在空隙，空隙中的空气就会成为触摸键的整个介质层的一部分，空气的介电常数通常比常用的介质材料低，从而等价于降
低了触摸键的介质的介电常数，进而就会使触摸时产生的电容变小。
b.非平面结构
非平面结构中，触摸键的感应电极和到触摸检测通道的连线处于不同平面。
非平面结构中，一般使用螺旋弹簧充当感应电极。
这种结构常用在感应电极和面板在物理上分离的应用，比如电磁炉、洗衣机等。
图7为使用螺旋弹簧做感应电极的示意图。
图7 螺旋弹簧作感应电极的示意图
7.1.3触摸键设计
一般情况下，触摸键的灵敏度与触摸键的面积成正比，与介质的介电常数、厚度成反比。
为获得最佳的灵敏度体验，需要设计合适的触摸键面积，选择适当的介质以及介质厚度。
触摸键的介质以亚克力为例，表4提供了介质厚度与触摸键面积的参考表。
7.2 PCB布线
在PCB布线时，建议遵守以下规则：
触摸键到芯片的触摸检测通道管脚的最大距离不超过10cm
触摸键到芯片的触摸检测通道管脚的走线电阻小于2000Ω；
触摸键到芯片的触摸检测通道管脚的金属走线宽度小于0.2mm（越细越好），尽量短、尽量远离电源和地；
8封装
图8 XC2863 SOP8封装外形图
图9 封装示意图
表5 封装尺寸。