ADuC845/ADuC847/ADuC848
目录
规格................................................. .................................... 4
Abosolute最大额定值............................................... ........ 10
ESD注意事项................................................ ................................ 10
引脚配置和功能说明......................... 11
概述................................................ ....................... 15
8052指令集............................................... .................... 18
定时器操作................................................ ......................... 18
ALE ................................................. .............................................. 18
外部存储器访问............................................... ............ 18
完成SFR地图............................................... ..................... 19
功能说明................................................ .................. 20
8051指令集............................................... .................... 20
存储器结构................................................ ............... 22
特殊功能寄存器（SFR ） ............................................ 24
ADC电路信息............................................... ........... 26
辅助ADC （ ADuC845只） ............................................ 32
参考输入................................................ ......................... 32
倦怠电流源............................................... ........... 32
基准电压检测电路............................................... ............ 33
SINC滤波器寄存器（ SF ） ............................................ ................. 33
Σ- Δ调制器.............................................. .............................. 33
数字滤波器................................................ ................................ 33
ADC削球................................................ ........................... 34
校准................................................. .................................. 34
可编程增益放大器............................................... 35 ..
双极性/单极性配置.............................................. 35
数据输出编码............................................... ................... 36
励磁电流................................................ .................... 36
ADC上电.............................................. ............................ 36
典型性能特征........................................... 37
功能说明................................................ .................. 39
数据表
ADC SFR接口............................................... ...................... 39
ADCSTAT （ ADC状态寄存器） ........................................... 40
ADCMODE （ ADC模式寄存器） ......................................... 41
ADC0CON1 （主ADC控制寄存器） ..................... 43
ADC0CON2 （主ADC通道选择寄存器） ........ 44
SF （ ADC sinc滤波器控制寄存器） .................................... 46
ICON （激励电流源控制寄存器） .......... 47
非易失性Flash / EE存储器概述............................... 48
闪速/电擦除程序存储器............................................. ......... 49
用户下载模式（ ULOAD ） ............................................ 。 50
使用Flash / EE数据存储器............................................ ...... 51
Flash / EE存储器时序............................................. ........... 52
DAC电路信息............................................... ........... 53
脉宽调制器（ PWM ） ........................................... ... 55
片上PLL （ PLLCON ） ........................................... ............... 60
I
2
C接口............................................... ...................... 61
SPI串行接口............................................... ...................... 64
使用SPI接口.............................................. ................ 66
双数据指针............................................... ...................... 67
电源监控............................................... ................ 68
看门狗定时器................................................ ......................... 69
时间间隔计数器（ TIC ） ............................................ ........ 70
8052兼容的片上外设.................................. 73
定时器/计数器............................................... ......................... 75
UART串行接口............................................... ................. 80
中断系统................................................ ......................... 85
中断优先级................................................ ........................ 86
中断向量................................................ ........................ 86
硬件设计注意事项............................................... 。 87
外部存储器接口............................................... ........ 87
电源................................................ ............................ 87
版本C |第108 2
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