Abov MC97F60128 - P8 Port; P8 Port Description; Register Description for P8

106
MC97F60128
ABOV Semiconductor Co., Ltd.
9.11 P8 Port
9.11.1 P8 Port Description
P8 is 8-bit I/O port. P8 control registers consist of P8 data register (P8), P8 direction register (P8IO), P8 pull-up resistor
selection register (P8PU) and P8 open-drain selection register (P8OD) . Refer to the port function selection registers
for the P8 function selection.
9.11.2 Register description for P8
P8 (P8 Data Register): 99H
7
6
5
4
3
2
1
0
P87
P86
P85
P84
P83
P82
P81
P80
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P8[7:0]
I/O Data
P8IO (P8 Direction Register): D1H
7
6
5
4
3
2
1
0
P87IO
P86IO
P85IO
P84IO
P83IO
P82IO
P81IO
P80IO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P8IO[7:0]
P8 Data I/O Direction
0
Input
1
Output
P8PU (P8 Pull-up Resistor Selection Register): ADH
7
6
5
4
3
2
1
0
P87PU
P86PU
P85PU
P84PU
P83PU
P82PU
P81PU
P80PU
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P8PU[7:0]
Configure Pull-up Resistor of P8 Port
0
Disable
1
Enable
P8OD (P8 Open-drain Selection Register): 4018H (XSFR)
7
6
5
4
3
2
1
0
P87OD
P86OD
P85OD
P84OD
P83OD
P82OD
P81OD
P80OD
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P8OD[7:0]
Configure Open-drain of P8 Port
0
Push-pull output
1
Open-drain output