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AT89C5130A/31A-M
10.3
10.4
10.5
程序设计...................................................................................................43
读数据.......................................................................................................43
注册.........................................................................................................44
11在系统编程（ ISP ） .......................................... .................... 45
11.1
11.2
11.3
11.4
11.5
闪存编程和擦除.............................................. ....................... 45
引导过程...................................................................................................46
应用程序编程接口............................................. .................... 47
XROW字节...................................................................................................47
硬件条件................................................ ....................................... 48
12片上扩展RAM （ ERAM ） ......................................... ................. 50
13定时器2 ............................................... .................................................. ... 53
13.1
13.2
自动重载模式.............................................. .............................................. 53
可编程时钟输出............................................... ............................ 54
14可编程计数器阵列（ PCA ） ........................................... ......... 58
14.1
14.2
14.3
14.4
14.5
PCA捕捉模式............................................... .......................................... 65
16位软件定时器/比较模式.......................................... .................. 65
高速输出模式.............................................. .................................. 66
脉宽调制器方式.............................................. ............................ 67
PCA看门狗定时器............................................... ....................................... 68
15串行I / O端口............................................ ............................................. 69
15.1
15.2
15.3
15.4
帧错误检测............................................... ................................... 69
自动地址识别............................................... ....................... 70
波特率选择为UART的模式1和3 ........................................ .... 72
UART的寄存器................................................ ............................................... 75
16中断系统............................................... ...................................... 79
16.1
16.2
16.3
概观..........................................................................................................79
注册.........................................................................................................80
中断源和向量地址............................................. ............ 87
17键盘接口............................................... .................................. 88
17.1
17.2
17.3
介绍......................................................................................................88
描述.......................................................................................................88
注册.........................................................................................................89
18个可编程LED ............................................... ................................. 92
ii
4337K–USB–04/08
