1 . 系统概述.......................................................................................................................................8
1.1 CIP-51TM CPU .....................................................................................................................13
1.1.1 与8051 完全兼容.............................................................................................................13
1.1.2 速度提高..........................................................................................................................13
1.1.3 增加的功能.......................................................................................................................14
1.2 片内存储器.............................................................................................................................15
1.3 JTAG 调试和边界扫描............................................................................................................16
1.4 可编程数字I/O 和交叉开关..................................................................................................17
1.5 可编程计数器阵列..................................................................................................................18
1.6 串行端口................................................................................................................................18
1.7 12 位模/数转换器.................................................................................................................19
1.8 8 位模/数转换器...................................................................................................................20
1.9 比较器和DAC........................................................................................................................21
2. 极限参数......................................................................................................................................22
3. 总体直流电气特性.......................................................................................................................23
4. 引脚和封装定义...........................................................................................................................24
5. ADC0 12 位只限于C8051F020/1 ...................................................................................33
5.1 模拟多路开关和PGA.............................................................................................................33
5.2 ADC 的工作方式..................................................................................................................34
5.2.1 启动转换........................................................................................................................34
5.2.2 跟踪方式........................................................................................................................35
5.2.3 建立时间要求.................................................................................................................36
5.3 ADC0 可编程窗口检测器....................................................................................................43
6. ADC0 10 位只限于C8051F022/3 ...................................................................................49
6.1 模拟多路开关和PGA.............................................................................................................49
6.2 ADC 的工作方式..................................................................................................................50
6.2.1 启动转换........................................................................................................................50
6.2.2 跟踪方式........................................................................................................................51
6.2.3 建立时间要求.................................................................................................................52
6.3 ADC0 可编程窗口检测器....................................................................................................59
7. ADC1 8 位ADC ..................................................................................................................65
7.1 模拟多路开关和PGA.............................................................................................................65
7.2 ADC1 的工作方式................................................................................................................66
7.2.1 启动转换........................................................................................................................66
C8051F020/1/2/3 混合信号ISP FLASH 微控制器
沈阳新华龙电子有限公司电话: (024) 23930366 23895360 传真: 23940230 3
7.2.2 跟踪方式........................................................................................................................66
7.2.3 建立时间要求.................................................................................................................68
8. 12 位电压输出DAC...................................................................................................................73
8.1 DAC 输出更新......................................................................................................................73
8.1.1 根据软件命令更新输出.................................................................................................73
8.1.2 基于定时器溢出的输出更新.........................................................................................74
8.2 DAC 输出定标/调整.............................................................................................................74
9. 电压基准C8051F020/2 .......................................................................................................79
10. 电压基准C8051F021/3 .....................................................................................................81
11. 比较器.......................................................................................................................................83
12. CIP-51 微控制器.....................................................................................................................88
12.1 指令集..................................................................................................................................89
12.1.1 指令和CPU 时序...........................................................................................................89
12.1.2 MOVX 指令和程序存储器...........................................................................................89
12.2 存储器组织...........................................................................................................................93
12.2.1 程序存储器.....................................................................................................................93
12.2.2 数据存储器.....................................................................................................................94
12.2.3 通用寄存器.....................................................................................................................94
12.2.4 位寻址空间.....................................................................................................................94
12.2.5 堆栈...............................................................................................................................94
12.2.6 特殊功能寄存器.............................................................................................................95
12.2.7 寄存器说明.....................................................................................................................99
12.3 中断系统.............................................................................................................................102
12.3.1 MCU 中断源和中断向量...........................................................................................102
12.3.2 外部中断......................................................................................................................102
12.3.3 中断优先权...................................................................................................................104
12.3.4 中断响应时间...............................................................................................................104
12.3.5 中断寄存器说明...........................................................................................................104
12.4 电源管理方式.....................................................................................................................111
12.4.1 等待方式...................................................................................................................... 111
12.4.2 停机方式...................................................................................................................... 111
13. 复位源......................................................................................................................................113
13.1 上电复位.............................................................................................................................114
13.2 掉电复位.............................................................................................................................114
13.3 外部复位.............................................................................................................................114
13.4 软件强制复位.....................................................................................................................115
C8051F020/1/2/3 混合信号ISP FLASH 微控制器
4 沈阳新华龙电子有限公司电话: (024) 23930366 23895360 传真: 23940230
13.5 时钟丢失检测器复位..........................................................................................................115
13.6 比较器0 复位......................................................................................................................115
13.7 外部CNVSTR 引脚复位....................................................................................................115
13.8 看门狗定时器复位..............................................................................................................115
13.8.1 允许/复位WDT............................................................................................................116
13.8.2 禁止WDT.....................................................................................................................116
13.8.3 禁止WDT 锁定............................................................................................................116
13.8.4 设置WDT 定时间隔.....................................................................................................116
14. 振荡器......................................................................................................................................119
14.1 外部晶体举例.....................................................................................................................122
14.2 外部RC 举例......................................................................................................................122
14.3 外部电容举例.....................................................................................................................122
15. FLASH 存储器..........................................................................................................................123
15.1 FLASH 存储器编程..........................................................................................................123
15.2 非易失性数据存储............................................................................................................124
15.3 安全选项...........................................................................................................................124
16 外部数据存储器接口和片内XRAM.....................................................................................128
16.1 访问XRAM ........................................................................................................................128
16.1.1 16 位MOVX 示例......................................................................................................128
16.1.2 8 位MOVX 示例........................................................................................................128
16.2 配置外部存储器接口..........................................................................................................129
16.3 端口选择和配置..................................................................................................................129
16.4 复用和非复用选择..............................................................................................................131
16.4.1 复用方式配置...............................................................................................................131
16.4.2 非复用方式配置...........................................................................................................132
16.5 存储器模式选择..................................................................................................................133
16.5.1 只用内部XRAM...........................................................................................................133
16.5.2 无块选择的分片模式...................................................................................................133
16.5.3 带块选择的分片模式...................................................................................................134
16.5.4 只用外部存储器...........................................................................................................134
16.6 时序....................................................................................................................................135
16.6.1 非复用方式...................................................................................................................136
16.6.2 复用方式......................................................................................................................139
17. 端口输入/输出..........................................................................................................................143
17.1 端口0 – 3 和优先权交叉开关译码器................................................................................144
17.1.1 交叉开关引脚分配........................................................................................................145
17.1.2 配置端口引脚的输出方式...........................................................................................146
17.1.3 配置端口引脚为数字输入...........................................................................................146
