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CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U16035EJ1V0UM
Table 3-5. Special Function Register List (1/2)
Address
Special Function Register (SFR) Name
Symbol
R/W
Manipulatable Bit Unit
After Reset
1 Bit
8 Bits 16 Bits
FF00H
Port 0
P0
R/W
√
√
—
00H
FF01H
Port 1
P1
R
√
√
—
FF02H
Port 2
P2
R/W
√
√
—
FF03H
Port 3
P3
√
√
—
FF04H
Port 4
P4
√
√
—
FF05H
Port 5
P5
√
√
—
FF07H
Port 7
P7
√
√
—
FF0AH
16-bit timer capture/compare register 00
CR00
—
—
√
Undefined
FF0BH
FF0CH
16-bit timer capture/compare register 01
CR01
—
—
√
FF0DH
FF0EH
16-bit timer counter 0
TM0
R
—
—
√
0000H
FF0FH
FF10H
8-bit timer compare register 50
CR50
R/W
—
√
—
Undefined
FF11H
8-bit timer compare register 51
CR51
—
√
—
FF12H
8-bit timer counter 50
TM5
TM50
R
—
√
√
00H
FF13H
8-bit timer counter 51
TM51
—
√
FF16H
A/D conversion result register 0
ADCR0
—
—
√
FF17H
—
—
FF18H
Transmit shift register 0
TXS0
W
—
√
—
FFH
Receive buffer register 0
RXB0
R
—
√
—
FF1AH
Serial I/O shift register 30
SIO30
R/W
—
√
—
Undefined
FF1BH
Serial I/O shift register 31
SIO31
—
√
—
FF20H
Port mode register 0
PM0
√
√
—
FFH
FF22H
Port mode register 2
PM2
√
√
—
FF23H
Port mode register 3
PM3
√
√
—
FF24H
Port mode register 4
PM4
√
√
—
FF25H
Port mode register 5
PM5
√
√
—
FF27H
Port mode register 7
PM7
√
√
—
FF30H
Pull-up resistor option register 0
PU0
√
√
—
00H
FF32H
Pull-up resistor option register 2
PU2
√
√
—
FF33H
Pull-up resistor option register 3
PU3
√
√
—
FF34H
Pull-up resistor option register 4
PU4
√
√
—
FF35H
Pull-up resistor option register 5
PU5
√
√
—
FF37H
Pull-up resistor option register 7
PU7
√
√
—
FF40H
Clock output select register
CKS
√
√
—
FF41H
Watch timer operation mode register
WTM
√
√
—
FF42H
Watchdog timer clock select register
WDCS
—
√
—