
R8C/36T-A Group
3. Address Space
Under development Preliminary document
Specifications in this document are tentative and subject to change.
R01UH0240EJ0010 Rev.0.10
Page 16 of 728
Aug 05, 2011
3.2
Special Function Registers (SFRs)
An SFR (special function register) is a control register for a peripheral function. Tables 3.1 to 3.16 list the SFR
X: Undefined
Notes:
1. The blank areas are reserved. No access is allowed.
2. Depends on the CSPROINI bit in the OFS register.
3. Depends on the LVDASI bit in the OFS register.
Table 3.1
Address
Symbol
Register Name
After Reset
Remarks
00000h
00001h
00002h
00003h
00004h
PM0
Processor Mode Register 0
00h
00005h
PM1
Processor Mode Register 1
10000000b
00006h
00007h
PRCR
Protect Register
00h
00008h
CM0
System Clock Control Register 0
00101000b
00009h
CM1
System Clock Control Register 1
00100000b
0000Ah
OCD
Oscillation Stop Detection Register
00h
0000Bh
CM3
System Clock Control Register 3
00h
0000Ch
CM4
System Clock Control Register 4
00000001b
0000Dh
0000Eh
0000Fh
00010h
CPSRF
Clock Prescaler Reset Flag
00h
00011h
00012h
FRA0
High-Speed On-Chip Oscillator Control Register 0
00h
00013h
00014h
FRA2
High-Speed On-Chip Oscillator Control Register 2
00h
00015h
00016h
00017h
00018h
00019h
0001Ah
0001Bh
0001Ch
0001Dh
0001Eh
0001Fh
00020h
RISR
Reset Interrupt Select Register
10000000b or
00000000b
00021h
WDTR
Watchdog Timer Reset Register
FFh
00022h
WDTS
Watchdog Timer Start Register
FFh
00023h
WDTC
Watchdog Timer Control Register
01111111b
00024h
CSPR
Count Source Protection Mode Register
10000000b or
00000000b
00025h
00026h
00027h
00028h
RSTFR
Reset Source Determination Register
00XXXXXXb
00029h
0002Ah
0002Bh
0002Ch
SVDC
STBY VDC Power Control Register
00h
0002Dh
0002Eh
0002Fh
00030h
CMPA
Voltage Monitor Circuit Control Register
00h
00031h
VCAC
Voltage Monitor Circuit Edge Select Register
00h
00032h
OCVREFCR
On-Chip Reference Voltage Control Register
00h
00033h
00034h
VCA2
Voltage Detection Register 2
00000000b or
00100000b
00035h
00036h
VD1LS
Voltage Detection 1 Level Select Register
00000111b
00037h
00038h
VW0C
Voltage Monitor 0 Circuit Control Register
1100XX10b or
1100XX11b
00039h
VW1C
Voltage Monitor 1 Circuit Control Register
10001010b