Datasheet

R01DS0032EJ0200 Rev.2.00 Page 20 of 88
Feb 07, 2011
M16C/64A Group 4. Special Function Registers (SFRs)
4. Special Function Registers (SFRs)
4.1 SFRs
An SFR is a control register for a peripheral function.
Notes:
1. The blank areas are reserved. No access is allowed.
2. Software reset, watchdog timer reset, oscillator stop detect reset, voltage monitor 1 reset, and voltage monitor 2 reset
do not affect the following bits: bits PM01 and PM00 in the PM0 register.
3. Oscillator stop detect reset does not affect bits CM20, CM21, and CM27.
4. The state of bits in the RSTFR register depends on the reset type.
5. This is the reset value after hardware reset. Refer to the explanation of each register for details.
Table 4.1 SFR Information (1)
(1)
Address Register Symbol Reset Value
0000h
0001h
0002h
0003h
0004h Processor Mode Register 0 PM0
0000 0000b
(CNVSS pin is low)
0000 0011b
(CNVSS pin is high)
(2)
0005h Processor Mode Register 1 PM1 0000 1000b
0006h System Clock Control Register 0 CM0 0100 1000b
0007h System Clock Control Register 1 CM1 0010 0000b
0008h Chip Select Control Register CSR 01h
0009h
000Ah Protect Register PRCR 00h
000Bh Data Bank Register DBR 00h
000Ch Oscillation Stop Detection Register CM2
0X00 0010b
(3)
000Dh
000Eh
000Fh
0010h Program 2 Area Control Register PRG2C XXXX XX00b
0011h
0012h Peripheral Clock Select Register PCLKR 0000 0011b
0013h
0014h
0015h Clock Prescaler Reset Flag CPSRF 0XXX XXXXb
0016h
0017h
0018h Reset Source Determine Register RSTFR
XX00 001Xb
(hardware reset)
(4)
0019h Voltage Detector 2 Flag Register VCR1
0000 1000b
(5)
001Ah Voltage Detector Operation Enable Register VCR2
00h
(5)
001Bh Chip Select Expansion Control Register CSE 00h
001Ch PLL Control Register 0 PLC0 0X01 X010b
001Dh
001Eh Processor Mode Register 2 PM2 XX00 0X01b
001Fh
X: Undefined