参数资料
型号: R5F21244SDXXXFP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP52
封装: 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52
文件页数: 10/59页
文件大小: 528K
代理商: R5F21244SDXXXFP
R8C/24 Group, R8C/25 Group
4. Special Function Registers (SFRs)
Rev.3.00
Feb 29, 2008
Page 18 of 51
REJ03B0117-0300
4.
Special Function Registers (SFRs)
An SFR (special function register) is a control register for a peripheral function. Tables 4.1 to 4.7 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 1 reset or voltage monitor 2 reset do not affect this register.
3.
The LVD0ON bit in the OFS register is set to 1 and hardware reset.
4.
Power-on reset, voltage monitor 0 reset or the LVD0ON bit in the OFS register is set to 0, and hardware reset.
5.
Software reset, watchdog timer reset, and voltage monitor 1 reset or voltage monitor 2 reset do not affect b2 and b3.
6.
The CSPROINI bit in the OFS register is set to 0.
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
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
00X11111b
0010h
Address Match Interrupt Register 0
RMAD0
00h
0011h
00h
0012h
00h
0013h
Address Match Interrupt Enable Register
AIER
00h
0014h
Address Match Interrupt Register 1
RMAD1
00h
0015h
00h
0016h
00h
0017h
0018h
0019h
001Ah
001Bh
001Ch
Count Source Protection Mode Register
CSPR
00h
10000000b(6)
001Dh
001Eh
001Fh
0020h
0021h
0022h
0023h
High-Speed On-Chip Oscillator Control Register 0
FRA0
00h
0024h
High-Speed On-Chip Oscillator Control Register 1
FRA1
When shipping
0025h
High-Speed On-Chip Oscillator Control Register 2
FRA2
00h
0026h
0027h
0028h
Clock Prescaler Reset Flag
CPSRF
00h
0029h
High-Speed On-Chip Oscillator Control Register 4
FRA4
When shipping
002Ah
002Bh
High-Speed On-Chip Oscillator Control Register 6
FRA6
When shipping
002Ch
High-Speed On-Chip Oscillator Control Register 7
FRA7
When shipping
0030h
0031h
Voltage Detection Register 1(2)
VCA1
00001000b
0032h
Voltage Detection Register 2(2)
VCA2
00h(3)
00100000b(4)
0033h
0034h
0035h
0036h
Voltage Monitor 1 Circuit Control Register(5)
VW1C
00001000b
0037h
Voltage Monitor 2 Circuit Control Register(5)
VW2C
00h
0038h
Voltage Monitor 0 Circuit Control Register(2)
VW0C
0000X000b(3)
0100X001b(4)
0039h
003Ah
003Eh
003Fh
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