AT89C51RE2

中断.............................................................................................................. 71

Registers............................................................................................................. 73

定时器2 ................................................ ................................................. 77

自动加载模式.............................................. ................................................ 77

可编程时钟输出.............................................. ................................ 78

Registers............................................................................................................. 80

可编程计数器阵列PCA .............................................. ..... 82

PCA捕捉模式............................................... ..............................................

16位软件定时器/比较模式.......................................... .....................

高速输出模式.............................................. .....................................

脉宽调制器方式.............................................. ................................

PCA看门狗定时器............................................... ..........................................

90

90

91

92

93

串行I / O端口............................................. ......................................... 94

帧错误检测............................................... ...................................... 94

自动地址识别............................................... ........................... 95

Registers............................................................................................................. 97

波特率选择为UART 0模式1和3 ....................................... ..... 98

波特率选择为UART 1模式1和3 ....................................... ..... 99

UART Registers................................................................................................ 103

中断系统................................................ ............................... 109

Registers........................................................................................................... 110

中断源和向量地址............................................. ............. 117

电源管理................................................ .......................... 118

介绍.......................................................................................................

空闲模式..........................................................................................................

掉电模式.............................................. .............................................

Registers...........................................................................................................

118

118

118

121

振荡器................................................. .......................................... 122

Registers........................................................................................................... 122

功能框图............................................... .................................. 123

硬件看门狗定时器............................................... ............... 124

使用WDT ............................................... .................................................. 124

WDT在掉电和空闲............................................ ....................... 125

降低EMI模式............................................... ............................ 126

键盘接口................................................ ........................... 127

Registers........................................................................................................... 128

2

7663E–8051–10/08