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详细说明： 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 ...展开收缩
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