目录

SFR页参考........................................................................................................................... B - 1

1.

1.1

1.2

1.3

1.4

1.5

1.6

2.

概观......................................................................................................................................... 1

应用程序...............................................................................................................................................

性能概述..............................................................................................................................

框图..........................................................................................................................................

产品信息..................................................................................................................................

引脚分配........................................................................................................................................

引脚功能.............................................................................................................................................

1

2

4

5

7

8

中央处理单元（CPU ） ..................................................................................................... 10

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.8.1

2.8.2

2.8.3

2.8.4

2.8.5

2.8.6

2.8.7

2.8.8

2.8.9

2.8.10

数据寄存器（ R0，R1， R2和R3 ） ......................................................................................................

地址寄存器（A0， A1 ） ...............................................................................................................

帧基址寄存器（ FB ） .......................................................................................................................

中断表寄存器（ INTB ） ..............................................................................................................

程序计数器（PC ） .............................................................................................................................

用户堆栈指针（ USP）和中断堆栈指针（ ISP ） ..................................... .............................

静态基址寄存器（ SB ） ........................................................................................................................

标志寄存器（ FLG ） ................................................................................................................................

进位标志（ C） .....................................................................................................................................

调试标志（ D） ...................................................................................................................................

零标志（ Z） .......................................................................................................................................

符号标志（ S） .......................................................................................................................................

寄存器组选择标志（B ） ............................................................................................................

溢出标志（ O） ..............................................................................................................................

中断允许标志（ I） .....................................................................................................................

堆栈指针指定标志（ U） ..............................................................................................................

处理器中断优先级（ IPL ） ........................................... ..................................................

保留位........................................................................................................................................

11

11

11

11

11

11

11

11

11

11

11

11

11

11

12

12

12

12

3.

3.1

3.2

4.

5.

内存......................................................................................................................................... 13

R8C / 28群......................................................................................................................................... 13

R8C / 29群......................................................................................................................................... 14

特殊功能寄存器（SFR ） ............................................ .................................................. 15

复位........................................................................................................................................... 22

5.1

5.1.1

5.1.2

5.2

5.3

5.4

5.5

5.6

5.7

5.8

硬件复位.......................................................................................................................................

当电源稳定.............................................................................................................

开机............................................................................................................................................

上电复位功能.......................................................................................................................

电压监视0复位（ N，D版） ........................................ .................................................. ......

电压监视1复位（ N，D版） ........................................ .................................................. ......

电压监视1复位（ J，K版） ........................................ .................................................. ........

电压监视2复位.........................................................................................................................

看门狗定时器复位............................................................................................................................

软件复位.........................................................................................................................................

26

26

26

28

30

30

30

31

31

31

A-1