W921E880A/W921C880
4位微控制器
表盒内的
1.概述.........................................................................................................................3
2 。 FEATURES.................................................................................................................................................3
3.引脚配置...............................................................................................................................6
4.密码DESCRIPTION.....................................................................................................................................7
5.框图......................................................................................................................................9
6.功能描述.................................................................................................................10
6.1 ROM存储器映射.........................................................................................................................10
6.2 RAM内存Map..........................................................................................................................11
6.2.1特殊控制寄存器。 Area..................................................................................................11
6.2.2堆栈注册。 Area.................................................................................................................12
6.2.3工作寄存器。区域............................................................................................................12
6.3内部振荡器电路.................................................................................................................13
6.4初始状态......................................................................................................................................14
6.5输入/输出....................................................................................................................................14
6.5.1 I / O上拉电阻及开漏控制...................................... ........................................... 17
6.6串行Port.......................................................................................................................................19
6.7 DTMF Generator.............................................................................................................................21
6.8蜂鸣Generator.....................................................................................................................22
6.9 8位D / A Converter.........................................................................................................................23
6.10 Comparator...................................................................................................................................24
6.11定时器0
3......................................................................................................................................25
6.11.1任意波形发生器............................................ ............................................. 32
6.12 Interrupt.........................................................................................................................................33
6.12.1中断控制寄存器............................................ .................................................. .... 33
6.12.2中断使能Flag........................................................................................................34
6.13操作Mode............................................................................................................................34
6.14的EPROM编程方法初始条件注册.......................................... ....................... 39
6.15复位............................................................................................................................................39
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出版日期： 1999年7月
修订A3
QQ：2881677436 复制
