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参数资料
型号： R5F21182DSP
元件分类： 微控制器/微处理器
英文描述： 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO20
封装： 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件页数： 10/41页
文件大小： 725K
代理商： R5F21182DSP
R8C/18 Group, R8C/19 Group
4. Special Function Registers (SFRs)
Rev.1.40
Apr 14, 2006
Page 18 of 38
REJ03B0124-0140
4.
Special Function Registers (SFRs)
An SFR (special function register) is a control register for a peripheral function. Tables 4.1 to 4.4 list the
special function registers.
Table 4.1
SFR Information (1)(1)
X: Undefined
NOTES:
1.
The blank regions are reserved. Do not access locations in these regions.
2.
Software reset, watchdog timer reset, and voltage monitor 2 reset do not affect this register.
3.
After hardware reset.
4.
After power-on reset or voltage monitor 1 reset.
5.
Software reset, watchdog timer reset, and voltage monitor 2 reset do not affect b2 and b3.
Address
Register
Symbol
After reset
0000h
0001h
0002h
0003h
0004h
Processor Mode Register 0
PM0
00h
0005h
Processor Mode Register 1
PM1
00h
0006h
System Clock Control Register 0
CM0
01101000b
0007h
System Clock Control Register 1
CM1
00100000b
0008h
0009h
Address Match Interrupt Enable Register
AIER
00h
000Ah
Protect Register
PRCR
00h
000Bh
000Ch
Oscillation Stop Detection Register
OCD
00000100b
000Dh
Watchdog Timer Reset Register
WDTR
XXh
000Eh
Watchdog Timer Start Register
WDTS
XXh
000Fh
Watchdog Timer Control Register
WDC
00011111b
0010h
Address Match Interrupt Register 0
RMAD0
00h
0011h
00h
0012h
X0h
0013h
0014h
Address Match Interrupt Register 1
RMAD1
00h
0015h
00h
0016h
X0h
0017h
0018h
0019h
001Ah
001Bh
001Ch
Count Source Protection Mode Register
CSPR
00h
001Dh
001Eh
INT0 Input Filter Select Register
INT0F
00h
001Fh
0020h
High-Speed On-Chip Oscillator Control Register 0
HRA0
00h
0021h
High-Speed On-Chip Oscillator Control Register 1
HRA1
When shipping
0022h
High-Speed On-Chip Oscillator Control Register 2
HRA2
00h
0023h
002Ah
002Bh
002Ch
002Dh
002Eh
002Fh
0030h
0031h
Voltage Detection Register 1(2)
VCA1
00001000b
0032h
Voltage Detection Register 2(2)
VCA2
00h(3)
01000000b(4)
0033h
0034h
0035h
0036h
Voltage Monitor 1 Circuit Control Register (2)
VW1C
0000X000b(3)
0100X001b(4)
0037h
Voltage Monitor 2 Circuit Control Register (5)
VW2C
00h
0038h
0039h
003Ah
003Bh
003Ch
003Dh
003Eh
003Fh
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