A96G140/A96G148/A96A148 User’s manual
6. I/O ports
57
P2 (P2 Data Register): 90H
7
6
5
4
3
2
1
0
P27
P26
P25
P24
P23
P22
P21
P20
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P2[7:0]
I/O Data
P2IO (P2 Direction Register): B9H
7
6
5
4
3
2
1
0
P27IO
P26IO
P25IO
P24IO
P23IO
P22IO
P21IO
P20IO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P2IO[7:0]
P2 Data I/O Direction
0
Input
1
Output
P2PU (P2 Pull-up Resistor Selection Register): AEH
7
6
5
4
3
2
1
0
P27PU
P26PU
P25PU
P24PU
P23PU
P22PU
P21PU
P20PU
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P2PU[7:0]
Configure Pull-up Resistor of P2 Port
0
Disable
1
Enable
P2OD (P2 Open-drain Selection Register): 93H
7
6
5
4
3
2
1
0
P27OD
P26OD
P25OD
P24OD
P23OD
P22OD
P21OD
P20OD
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P2OD[7:0]
Configure Open-drain of P2 Port
0
Push-pull output
1
Open-drain output