ADuC7019_7020_7021_7022_7024_7025_7026_7027_7028_7029
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精密模拟微控制器，12位模拟输
入/输出，ARM7TDMI® MCU
ADuC7019/20/21/22/24/25/26/27/28/29
ADI中文版数据手册是英文版数据手册的译文，敬请谅解翻译中可能存在的语言组织或翻译错误，ADI不对翻译中存在的差异或由此产生的错误负责。如需确认任何词语的准确性，请参考ADI提供的最新英文版数据手册。
特性
模拟输入/输出 多通道、12位、1 MSPS模数转换器（ADC） 最多16个ADC通道1 全差分和单端模式 0V至VREF的模拟输入范围 12位电压输出数模转换器（DAC） 最多4路DAC输出可用1 片内基准电压 片内温度传感器 (±3℃典型值) 电压比较器 微控制器 16位/32位RISC架构ARM7TDMI内核 JTAG端口支持代码下载和调试 时钟选择 修正的片内振荡器 (±3%) 外部时钟晶体 可达44MHZ的外部时钟源 具有可编程分频器的41.78MHz锁相环 内存 62 kB Flash/EE存储器，8 kB SRAM 在线下载，基于JTAG调试 软件触发在线重新编程能力 片内外设 UART，2 个I2C®和SPI®串行I/O端口 最多40引脚GPIO端口1 4个通用定时器 唤醒和看门狗定时器(WDT) 电源监控器 3相16位PWM发生器1 可编程逻辑阵列(PLA) 可达512KB的外部存储器接口1 电源 采用3V额定电源 主动模式：11 mA @ 5 MHz，40 mA @ 41.78 MHz 封装和温度范围 从40引脚6mmx6mm LFCSP封装到80引脚LQFP封装1 工作温度范围：–40℃至+125℃ 工具 低成本QuickStart™开发系统 完全第三方支持 应用
工业控制和自动化系统 智能传感器，精密仪表 基站系统，光网络 功能框图
04955-0011MSPS12-BIT ADCDAC012-BITDAC
DAC112-BITDAC
DAC212-BITDAC
DAC312-BITDAC
PWM0HPWM0LPWM1HPWM1LPWM2HPWM2LTHREE-PHASEPWM
EXT. MEMORYINTERFACEADuC7026ADC0
XCLKIXCLKO
RSTVREFADC11MUX
TEMPSENSOR
BANDGAPREF
OSCAND PLL
PSM
PORCMP0
CMP1CMPOUT
PLA
4 GENERALPURPOSE TIMERS2k × 32 SRAM31k × 16 FLASH/EEPROM
SERIAL I/OUART, SPI, I2CGPIO
JTAGARM7TDMI-BASED MCU WITHADDITIONAL PERIPHERALS
图1 1 取决于具体的器件型号。
更多信息请参阅订购指南。 Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2005–2009 Analog Devices, Inc. All rights reserved.ADuC7019/20/21/22/24/25/26/27/28/29
Rev. C | Page 2 of 95 目录
特性.....................................................................................1
应用.....................................................................................1
功能框图..............................................................................1
修订历史..............................................................................3
概述.....................................................................................4
详细框图..........................................................................5
技术规格..............................................................................6
时序规格..........................................................................9
绝对最大额定值.................................................................16
ESD警告........................................................................16
引脚配置和功能描述..........................................................17
ADuC7019/ADuC7020/ADuC7021/ADuC7022.............17
ADuC7024/ADuC7025..................................................20
ADuC7026/ADuC7027..................................................23
ADuC7028.....................................................................26
典型工作特性.....................................................................30
术语...................................................................................33
ADC技术规格................................................................33
DAC技术规格................................................................33
ARM7TDMI内核概览.........................................................34
Thumb模式(T)...............................................................34
长乘 (M)........................................................................34
嵌入式ICE (I) ...............................................................34
异常...............................................................................34
ARM寄存器....................................................................34
中断延迟........................................................................35
存储器结构........................................................................36
存储器访问....................................................................36
Flash/EE存储器.............................................................36
SRAM............................................................................36
存储器映射寄存器..........................................................36
ADC电路概览....................................................................40
传递函数........................................................................40
典型操作........................................................................41
MMR接口.......................................................................41
