FC2720
8-Bit Micro-Controller
苏州锋驰微电子有限公司 4 Version 1.1
目
目
录
录
1 产品简介 ................................................................................................................................................... 6
1.1 功能特性 ........................................................................................................................................................... 6
1.2 系统结构框图 .................................................................................................................................................... 8
1.3 引脚配置 ........................................................................................................................................................... 8
1.4 引脚说明 ........................................................................................................................................................... 8
2 中央处理器(CPU) .............................................................................................................................. 10
2.1 程序存储器(ROM)..................................................................................................................................... 10
2.1.1 复位向量(0000H) ................................................................................................................................................. 10
2.1.2 中断向量(0008H) ................................................................................................................................................. 10
2.1.3 查表 ........................................................................................................................................................................... 11
2.1.4 跳转表 ....................................................................................................................................................................... 12
2.1.5 CHECKSUM 计算 .................................................................................................................................................... 13
2.2 数据存储器(RAM) ..................................................................................................................................... 15
2.2.1 系统寄存器 ................................................................................................................................................................ 15
2.2.2 累加器 ....................................................................................................................................................................... 17
2.2.3 程序状态寄存器 PFLAG .......................................................................................................................................... 17
2.2.4 程序计数器 PC .......................................................................................................................................................... 18
2.2.5 Y,Z 寄存器 ................................................................................................................................................................ 18
2.2.6 R 寄存器 .................................................................................................................................................................... 19
2.2.7 RAM 页面控制寄存器(RBANK) .............................................................................................................................. 19
2.2.8 OPTION 寄存器........................................................................................................................................................ 20
2.3 堆栈 ................................................................................................................................................................. 21
2.3.1 概述 ........................................................................................................................................................................... 21
2.3.2 堆栈寄存器 ................................................................................................................................................................ 21
3 复位 ......................................................................................................................................................... 22
3.1 概述 ................................................................................................................................................................. 22
3.2 上电复位 ......................................................................................................................................................... 22
3.3 看门狗复位...................................................................................................................................................... 22
3.4 掉电复位 ......................................................................................................................................................... 23
3.4.1 概述 ........................................................................................................................................................................... 23
3.4.2 系统工作电压 ............................................................................................................................................................ 24
3.4.3 低电压检测 LVD ....................................................................................................................................................... 24
3.4.4 掉电复位性能改进 .................................................................................................................................................... 24
3.5 外部复位 ......................................................................................................................................................... 25
4 系统时钟 ................................................................................................................................................. 26
4.1 概述 ................................................................................................................................................................. 26
4.2 指令周期 FCPU ................................................................................................................................................ 26
5 系统工作模式 .......................................................................................................................................... 27
5.1 概述 ................................................................................................................................................................. 27
5.2 普通模式 ......................................................................................................................................................... 28
5.3 低速模式 ......................................................................................................................................................... 28
5.4 睡眠模式 ......................................................................................................................................................... 28
5.5 绿色模式 ......................................................................................................................................................... 29
5.6 工作模式控制宏 .............................................................................................................................................. 29
锋驰代理商软硬件技术工程师150-1351-9998,QQ8498.8242