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1T 8051
8位微控制器
NuMicro
®
家族
MS51系列
MS51DA9AE
MS51BA9AE
技术参考手册
The information described in this document is the exclusive intellectual property of
Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.
Nuvoton is providing this document only for reference purposes of NuMicro microcontroller based
system design. Nuvoton assumes no responsibility for errors or omissions.
All data and specifications are subject to change without notice.
For additional information or questions, please contact: Nuvoton Technology Corporation.
www.nuvoton.com
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目录
1 概述 .................................................................................................................. 8
2 特性 .................................................................................................................. 9
3 料号信息 ......................................................................................................... 12
3.1 封装类型 ........................................................................................................................ 12
3.2 MS51系列选型指南 ..................................................................................................... 12
3.3 MS51系列命名规则 ..................................................................................................... 13
4 引脚配置 ......................................................................................................... 14
4.1 MS51BA9AE / MS51DA9AE 引脚配置..................................................................... 14
4.1.1 TSSOP 14脚封装引脚信息 ............................................................................................ 14
4.1.2 MSOP 10脚封装引脚信息.............................................................................................. 14
4.2 MS51BA9AE / MS51DA9AE 系列引脚描述............................................................. 15
5 功能框图 ......................................................................................................... 17
5.1 MS51BA9AE / MS51DA9AE 系列框图..................................................................... 17
6 功能描述 ......................................................................................................... 18
6.1 内存架构 ........................................................................................................................ 18
6.1.1 程序内存(APROM / LDROM) ........................................................................................ 18
6.1.2 非易失性数据存储 (Data Flash) .................................................................................... 19
6.1.3 安全保护存储器(SPROM) ............................................................................................. 19
6.1.4 配置字 (CONFIG) ........................................................................................................... 20
6.1.5 数据内存(RAM) ............................................................................................................... 25
6.1.6 特殊功能寄存器(SFR) .................................................................................................... 27
6.2 系统管理 ...................................................................................................................... 143
6.2.1 时钟系统 ......................................................................................................................... 143
6.2.2 电源管理 ......................................................................................................................... 147
6.2.3 电源监控及复位 ............................................................................................................. 149
6.2.4 中断系统 ......................................................................................................................... 159
6.3 內存储控制 .................................................................................................................. 169
6.3.1 在应用编程 (IAP) .......................................................................................................... 169
6.3.2 在线电路编程 (ICP) ...................................................................................................... 180
6.3.3 片上调试 (OCD) ............................................................................................................ 180
6.3.4 96位序列号(UID) ........................................................................................................... 181
6.4 I/O 口控制寄存器 ....................................................................................................... 182
6.4.1 GPIO端口结构和工作模式 ........................................................................................... 182
6.4.2 GPIO控制寄存器 ........................................................................................................... 184
6.4.3 读-修改-写 指令 ............................................................................................................. 187
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6.4.4 管脚中断 ......................................................................................................................... 188
6.5 定时器 .......................................................................................................................... 191
6.5.1 定时器//计数器 0 和 1 ................................................................................................... 191
6.5.2 定时器 2 和输入捕获 .................................................................................................... 200
6.5.3 定时器 3 ......................................................................................................................... 218
6.6 看门狗定时器 (WDT) ................................................................................................. 222
6.6.1 看门狗定时器结构描述 ................................................................................................. 222
6.6.2 超时复位定时器 ............................................................................................................. 223
6.6.3 通用定时器 ..................................................................................................................... 223
6.6.4 看门狗控制寄存器 ......................................................................................................... 223
6.7 自唤醒定时器 (WKT) ................................................................................................. 226
6.7.1 WKT 结构描述 ............................................................................................................... 226
6.7.2 WKT 控制寄存器 ........................................................................................................... 226
6.8 脉冲宽度调制 (PWM) ................................................................................................ 228
6.8.1 脉冲宽度调制发生器 ..................................................................................................... 228
6.8.2 PWM类型 ....................................................................................................................... 231
6.8.3 工作模式 ......................................................................................................................... 232
6.8.4 屏蔽输出控制 ................................................................................................................. 233
6.8.5 故障刹车 ......................................................................................................................... 233
6.8.6 极性控制 ......................................................................................................................... 233
6.8.7 PWM 中断 ...................................................................................................................... 234
6.8.8 PWM 控制寄存器 .......................................................................................................... 235
6.9 串口 (UART0 & UART1) ........................................................................................... 248
6.9.1 工作模式 ......................................................................................................................... 248
6.9.2 波特率............................................................................................................................. 250
6.9.3 帧错误检测 ..................................................................................................................... 254
6.9.4 多机通讯 ......................................................................................................................... 254
6.9.5 自动地址识别 ................................................................................................................. 254
6.9.6 串口控制寄存器 ............................................................................................................. 256
6.10 I
2
C 总线(I
2
C) ......................................................................................................... 267
6.10.1 功能描述 ......................................................................................................................... 267
6.10.2 开始和停止条件 ............................................................................................................. 267
6.10.3 7位地址数据格式 .......................................................................................................... 268
6.10.4 应答Ack .......................................................................................................................... 269
6.10.5 仲裁 ................................................................................................................................ 270
6.10.6 操作模式 ......................................................................................................................... 270
6.10.7 I
2
C超时溢出 ................................................................................................................... 275
6.10.8 I
2
C中断 ........................................................................................................................... 275
6.10.9 各状态码表述 ................................................................................................................. 275
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6.10.10 I
2
C控制寄存器 .......................................................................................................... 277
6.10.1 I
2
C 中断服务程序典型结构范例 .................................................................................. 282
6.11 串行外围总线(SPI) ............................................................................................... 286
6.11.1 结构功能图 ..................................................................................................................... 286
6.11.2 功能描述 ......................................................................................................................... 286
6.11.3 操作模式 ......................................................................................................................... 288
6.11.4 时钟格式和数据传输 ..................................................................................................... 288
6.11.5 从机选择引脚SS配置 ................................................................................................... 290
6.11.6 模式故障侦测 ................................................................................................................. 290
6.11.7 写冲突错误 ..................................................................................................................... 290
6.11.8 溢出错误 ......................................................................................................................... 291
6.11.9 SPI中断 .......................................................................................................................... 291
6.11.10 SPI 控制寄存器........................................................................................................ 292
6.12 12位模数转换器(ADC) ........................................................................................ 296
6.12.1 功能描述 ......................................................................................................................... 296
6.12.2 ADC 工作方式 ............................................................................................................... 297
6.12.3 外部触发ADC ................................................................................................................ 297
6.12.4 ADC 转换结果比较器 ................................................................................................... 298
6.12.5 带隙电压（Band-gap） 输入应用 .............................................................................. 298
6.12.6 ADC控制寄存器 ............................................................................................................ 299
6.13 辅助功能 ................................................................................................................ 309
6.13.1 双 DPTR ......................................................................................................................... 309
7 应用电路 ....................................................................................................... 311
7.1 供电电路 ...................................................................................................................... 311
7.2 外设应用电路 .............................................................................................................. 312
8 电气特性 ....................................................................................................... 313
9 封装信息 ....................................................................................................... 314
9.1 TSSOP 14 (4.4 x 5.5 x 1.2 mm) ............................................................................. 314
9.2 MSOP 10 (3.0 x 3.0 x 1.1 mm) ................................................................................ 315
10 缩写词 ........................................................................................................... 316
10.1 缩写词列表 ............................................................................................................ 316
11 指令集 ........................................................................................................... 317
11.1 指令集概述 ............................................................................................................ 317
11.2 指令集表 ................................................................................................................ 318
12 历史版本信息 ................................................................................................ 321
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图集
图 4.1-1 TSSOP-14 封装引脚信息 ................................................................................................ 14
图 4.1-2 MSOP-10 封装引脚信息 .................................................................................................. 14
图 5.1-1 结构框图 .......................................................................................................................... 17
图 6.1-3 CONFIG0 复位后自动重载 .............................................................................................. 21
图 6.1-4 CONFIG2 上电复位重载位 .............................................................................................. 23
图 6.1-5 数据内存分配图 ............................................................................................................... 25
图 6.1-6内部 256 字节 RAM 地址 .................................................................................................. 26
图 6.2-1 时钟系统框图 ................................................................................................................. 143
图 6.2-2 欠压检测框图 ................................................................................................................. 150
图 6.6-1 WDT作为超时复位定时器 .............................................................................................. 223
图 6.6-2看门狗定时器框图 ........................................................................................................... 223
图 6.7-1自唤醒定时器框图 ........................................................................................................... 226
图 6.8-1 PWM 结构框图 .............................................................................................................. 229
图 6.8-2 PWM和故障刹车输出控制方框图 .................................................................................. 230
图 6.8-3 PWM 边沿对齐类型波形 ................................................................................................ 231
图 6.8-4 PWM中心对齐类型波形 ................................................................................................. 232
图 6.8-5 带死区时间插入的PWM互补模式 .................................................................................. 233
图 6.8-6 故障刹车功能方框图 ...................................................................................................... 233
图 6.8-7 PWM中断类型 ............................................................................................................... 234
图 6.9-1 串口模式 0 时序图 ......................................................................................................... 248
图 6.9-2 串口模式1的时序图 ........................................................................................................ 249
图 6.9-3 串口模式2模式3的传输时序 ........................................................................................... 250
图 6.10-1 I
2
C总线连接 ................................................................................................................. 267
图 6.10-2 I
2
C总线协议 ................................................................................................................. 267
图 6.10-3 起始条件, 重复起始条件和停止条件 ............................................................................ 268
图 6.10-4 主机发送数据给一个7位地址从机 ................................................................................ 268
图 6.10-5 主机读取数据从一个7位地址从机 ................................................................................ 268
图 6.10-6一个传输中的I2C数据格式 ............................................................................................ 269
图 6.10-7应答位 ........................................................................................................................... 269
图 6.10-8两台主机仲裁过程 ......................................................................................................... 270
图 6.10-9根据当前I
2
C 状态来控制I
2
C总线 ................................................................................... 271
图 6.10-10主机发送模式流程和寄存器状态 ................................................................................. 271
