Datasheet

R8C/26 Group, R8C/27 Group 4. Special Function Registers (SFRs)
Rev.2.10 Sep 26, 2008 Page 17 of 69
REJ03B0168-0210
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. The CSPROINI bit in the OFS register is set to 0.
3. In J, K version these regions are reserved. Do not access locations in these regions.
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
(2)
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
(3)
FRA4 When shipping
002Ah
002Bh
High-Speed On-Chip Oscillator Control Register 6
(3)
FRA6 When shipping
002Ch
High-Speed On-Chip Oscillator Control Register 7
(3)
FRA7 When shipping
002Dh
002Eh
002Fh