目录
快速参考网页按地址分类........................................... ....................... B1
1.概述.............................................................................................................................. 1
1.1应用................................................................................................................................................. 1
1.2性能概述............................................................................................................................... 2
1.3框图............................................................................................................................................. 3
1.4性能概述............................................................................................................................... 4
1.5引脚配置........................................................................................................................................五
1.6引脚说明............................................................................................................................................ 6
2.中央处理单元( CPU ) .......................................... .................................................. 7
2.1数据寄存器( R0,R1, R2和R3 ) ......................................................................................................... 7
2.2地址寄存器(A0, A1 ) ................................................................................................................... 7
2.3帧基址寄存器( FB ) .......................................................................................................................... 8
2.4中断表寄存器( INTB ) ................................................................................................................... 8
2.5程序计数器(PC ) ................................................................................................................................ 8
2.6用户堆栈指针( USP ) ,中断堆栈指针( ISP ) .................................... ........................................ 8
2.7静态基址寄存器( SB ) ........................................................................................................................... 8
2.8标志寄存器( FLG ) .................................................................................................................................... 8
2.8.1进位标志(C标志) ............................................................................................................................. 8
2.8.2调试标志(D标志) ........................................................................................................................... 8
2.8.3零标志(Z标志) ............................................................................................................................... 8
2.8.4符号标志(S标志) ............................................................................................................................... 8
2.8.5寄存器组选择标志(B标志) ..................................................................................................... 8
2.8.6溢出标志(O标志) ........................................................................................................................ 8
2.8.7中断允许标志(I标志) .............................................................................................................. 8
2.8.8堆栈指针选择标志(U标志) ...................................................................................................... 8
2.8.9处理器中断优先级( IPL ) ........................................ .................................................. 8 .....
2.8.10保留区.................................................................................................................................. 8
3.内存................................................................................................................................ 9
4.特殊功能寄存器( SFR ) .......................................... ............................................ 10
5.复位.................................................................................................................................. 20
5.1硬件复位........................................................................................................................................ 20
5.2软件复位......................................................................................................................................... 22
6.时钟产生电路............................................. .................................................. ..... 23
6.1
6.2
6.3
6.4
6.5
6.6
主时钟................................................................................................................................................ 28
子时钟.................................................................................................................................................. 29
片上振荡器时钟........................................................................................................................... 29
CPU时钟和外围功能时钟............................................ .................................................. 。 30
功率控制........................................................................................................................................... 31
振荡停止检测功能.......................................................................................................... 36
7.保护........................................................................................................................... 40
8.处理器模式................................................................................................................. 41
处理器模式8.1类型......................................................................................................................... 41
A-1