W921E400A/W921C400
4位微控制器
表盒内的
1.概述.........................................................................................................................3
2 。 FEATURES.................................................................................................................................................3
3.引脚配置...............................................................................................................................5
4.密码DESCRIPTION.....................................................................................................................................6
5.框图......................................................................................................................................7
6.功能DESCRIPTION........................................................................................................................8
6.1 ROM存储器映射..............................................................................................................................8
6.2 RAM内存Map...............................................................................................................................9
6.2.1特殊控制寄存器区....................................................................................................9
6.2.2堆栈寄存器区.................................................................................................................11
6.2.3工作寄存器Area.............................................................................................................12
6.3内部振荡器Circuit.....................................................................................................................12
6.4初始状态.........................................................................................................................................13
6.5 Input/Output........................................................................................................................................13
我6.5.1普通/特殊功能选择/ O ...................................... ............................................. 14
6.5.2拉我高和开漏控制/ O ..................................... ............................................. 15
6.6串口..........................................................................................................................................18
6.7 DTMF Generator................................................................................................................................20
6.8蜂鸣音发生器........................................................................................................................22
6.9 Comparator........................................................................................................................................22
6.10定时器/计数器..................................................................................................................................24
6.10.1 TM0.......................................................................................................................................24
6.10.2 TM2.......................................................................................................................................26
6.10.3 TM3.......................................................................................................................................28
6.10.4任意波形发生器............................................ .................................................. 0.29
6.11 Interrupt............................................................................................................................................30
6.11.1中断控制Register.......................................................................................................30
6.11.2中断使能标志.............................................................................................................31
-1-
出版日期： 1998年7月
修订A3
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