R01UH0092EJ0110 Rev.1.10
Page 20 of 807
Jul 31, 2012
M16C/64C 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
Peripheral Clock Stop Register 1
PCLKSTP1
0XXX XX00b
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
Содержание M16C Series
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