Datasheet

M32C/87 Group (M32C/87, M32C/87A, M32C/87B) 4. Special Function Registers (SFRs)
REJ03B0127-0151 Rev.1.51 Jul 31, 2008
Page 27 of 85
4. Special Function Registers (SFRs)
Special Function Registers (SFRs) are the control registers of peripheral functions. Tables 4.1 to 4.20 list SFR address
maps.
Table 4.1 SFR Address Map (1/20)
X: Undefined
Blank spaces are all reserved. No access is allowed.
NOTE:
1. Bits PM01 and PM00 in the PM0 register maintain values set before reset, even after software reset or watchdog timer reset has been
performed.
Address Register Symbol After Reset
0000h
0001h
0002h
0003h
0004h Processor Mode Register 0
(1)
PM0
1000 0000b(CNVSS=”L”)
0000 0011b(CNVSS=”H”)
0005h Processor Mode Register 1 PM1 00h
0006h System Clock Control Register 0 CM0 0000 1000b
0007h System Clock Control Register 1 CM1 0010 0000b
0008h
0009h Address Match Interrupt Enable Register AIER 00h
000Ah Protect Register PRCR XXXX 0000b
000Bh External Data Bus Width Control Register DS
XXXX 1000b(BYTE=”L”)
XXXX 0000b(BYTE=”H”)
000Ch Main Clock Division Register MCD XXX0 1000b
000Dh Oscillation Stop Detection Register CM2 00h
000Eh Watchdog Timer Start Register WDTS XXh
000Fh Watchdog Timer Control Register WDC 00XX XXXXb
0010h
Address Match Interrupt Register 0 RMAD0 000000h0011h
0012h
0013h Processor Mode Register 2 PM2 00h
0014h
Address Match Interrupt Register 1 RMAD1 000000h0015h
0016h
0017h Voltage Detection Register 2 VCR2 00h
0018h
Address Match Interrupt Register 2 RMAD2 000000h0019h
001Ah
001Bh Voltage Detection Register 1 VCR1 0000 1000b
001Ch
Address Match Interrupt Register 3 RMAD3 000000h001Dh
001Eh
001Fh
0020h
0021h
0022h
0023h
0024h
0025h
0026h PLL Control Register 0 PLC0 0001 X010b
0027h PLL Control Register 1 PLC1 000X 0000b
0028h
Address Match Interrupt Register 4 RMAD4 000000h0029h
002Ah
002Bh
002Ch
Address Match Interrupt Register 5 RMAD5 000000h002Dh
002Eh
002Fh Vdet4 Detection Interrupt Register D4INT XX00 0000b