CHAPTER 3 CPU ARCHITECTURE
User’s Manual U16898EJ3V0UD
36
Table 3-3. Special Function Registers (1/2)
Number of Bits Manipulated
Simultaneously
Address
Special Function Register (SFR) Name
Symbol
R/W
1 Bit
8 Bits
16 Bits
After Reset
FF02H
Port register 2
P2
√
√
−
FF03H
Port register 3
P3
√
√
−
FF04H
Port register 4
P4
√
√
−
FF0CH
Port register 12
P12
√
√
−
FF0DH
Port register 13
P13
R/W
Note 1
√
√
−
FF0EH
8-bit timer H compare register 01
CMP01
−
√
−
FF0FH
8-bit timer H compare register 11
CMP11
R/W
−
√
−
00H
FF12H
FF13H
16-bit timer counter 00
TM00
R
−
−
√
Note 2
0000H
FF14H
FF15H
16-bit timer capture/compare register 000
CR000
−
−
√
Note 2
0000H
FF16H
FF17H
16-bit timer capture/compare register 010
CR010
R/W
−
−
√
Note 2
0000H
FF18H
FF19H
10-bit A/D conversion result register
ADCR
−
−
√
Note 2
FF1AH
8-bit A/D conversion result register
ADCRH
R
−
√
−
Undefined
FF22H
Port mode register 2
PM2
√
√
−
FF23H
Port mode register 3
PM3
√
√
−
FF24H
Port mode register 4
PM4
√
√
−
FF2CH
Port mode register 12
PM12
√
√
−
FFH
FF32H
Pull-up resistance option register 2
PU2
√
√
−
FF33H
Pull-up resistance option register 3
PU3
√
√
−
FF34H
Pull-up resistance option register 4
PU4
√
√
−
FF3CH
Pull-up resistance option register 12
PU12
√
√
−
00H
FF48H
Watchdog timer mode register
WDTM
−
√
−
67H
FF49H
Watchdog timer enable register
WDTE
−
√
−
9AH
FF50H
Low voltage detect register
LVIM
√
√
−
FF51H
Low voltage detection level select register
LVIS
R/W
−
√
−
00H
Note 3
FF54H
Reset control flag register
RESF
R
−
√
−
00H
Note 4
FF58H
Low-speed internal oscillation mode register
LSRCM
√
√
−
FF5AH
High-speed internal oscillation mode register
HSRCM
√
√
−
FF60H
16-bit timer mode control register 00
TMC00
√
√
−
FF61H
Prescaler mode register 00
PRM00
√
√
−
FF62H
Capture/compare control register 00
CRC00
√
√
−
FF63H
16-bit timer output control register 00
TOC00
√
√
−
FF70H
8-bit timer H mode register 1
TMHMD1
R/W
√
√
−
00H
Notes 1.
Only P34 is an input-only port.
2.
A 16-bit access is possible only by the short direct addressing.
3.
Retained only after a reset by LVI.
4.
Varies depending on the reset cause.