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Address
Special Function Register (SFR) Name
FF00H
Port 0
FF01H
Port 1
FF02H
Port 2
FF03H
Port 3
FF05H
Port 5
FF06H
Port 6
Note
FF07H
Port 7
Note
FF08H
Port 8
FF0AH
8-bit compare register 61
FF0BH
8-bit timer counter 61
FF0CH
8-bit compare register 60
FF0DH
8-bit compare register 50
FF0EH
8-bit timer counter 60
FF0FH
8-bit timer counter 50
FF11H
Serial I/O shift register 1A0
FF12H
16-bit multiplication result store register L
FF13H
16-bit multiplication result store register H
FF14H
A/D conversion result register 0
FF15H
FF16H
16-bit compare register 20
FF17H
FF18H
16-bit timer counter 20
FF19H
FF1AH
16-bit capture register 20
FF1BH
FF20H
Port mode register 0
FF21H
Port mode register 1
FF22H
Port mode register 2
FF23H
Port mode register 3
FF25H
Port mode register 5
FF28H
Port mode register 8
FF30H
Pull-up resistor option register B0
FF31H
Pull-up resistor option register B1
FF32H
Pull-up resistor option register B2
FF33H
Pull-up resistor option register B3
Note When used as port function by mask option or port function register.
CHAPTER 3 CPU ARCHITECTURE
Table 3-4. Special Function Registers (1/3)
Note
User's Manual U15331EJ4V1UD
Symbol
R/W
Bit Unit for Manipulation
1 Bit
P0
R/W
P1
P2
P3
P5
P6
R
P7
P8
R/W
CR61
W
TM61
R
CR60
CR6
W
CR50
TM60
TM6
R
TM50
SIO1A0
R/W
MUL0L
MUL0
R
MUL0H
ADCRL0
CR20
W
TM20
R
TCP20
PM0
R/W
PM1
PM2
PM3
PM5
PM8
PUB0
PUB1
PUB2
PUB3
After
Reset
8 Bits
16 Bits
00H
Undefined
00H
Undefined
00H
Undefined
0000H
FFFFH
0000H
Undefined
FFH
00H
63
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