A96G140/A96G148/A96A148 User’s manual
6. I/O ports
59
P3IO (P3 Direction Register): C1H
7
6
5
4
3
2
1
0
P37IO
P36IO
P35IO
P34IO
P33IO
P32IO
P31IO
P30IO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P3IO[7:0]
P3 Data I/O Direction
0
Input
1
Output
P3PU (P3 Pull-up Resistor Selection Register): AFH
7
6
5
4
3
2
1
0
P37PU
P36PU
P35PU
P34PU
P33PU
P32PU
P31PU
P30PU
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P3PU[7:0]
Configure Pull-up Resistor of P3 Port
0
Disable
1
Enable