Abov MC97F60128 User Manual

108
MC97F60128
ABOV Semiconductor Co., Ltd.
9.12 P9 Port
9.12.1 P9 Port Description
P9 is 5-bit I/O port. P9 control registers consist of P9 data register (P9), P9 direction register (P9IO), debounce
enable register (P9DB), P9 pull-up resistor selection register (P9PU) and P9 open-drain selection register (P9OD).
Refer to the port function selection registers for the P9 function selection.
9.12.2 Register description for P9
P9 (P9 Data Register): A1H
7
6
5
4
3
2
1
0
–
–
–
P94
P93
P92
P91
P90
–
–
–
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P9[4:0]
I/O Data
P9IO (P9 Direction Register): D9H
7
6
5
4
3
2
1
0
–
–
–
P94IO
P93IO
P92IO
P91IO
P90IO
–
–
–
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P9IO[4:0]
P9 Data I/O Direction.
0
Input
1
Output
NOTE)
1. EINTA-EINTE function possible when
input
P9PU (P9 Pull-up Resistor Selection Register): AEH
7
6
5
4
3
2
1
0
–
–
–
P94PU
P93PU
P92PU
P91PU
P90PU
–
–
–
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P9PU[4:0]
Configure Pull-up Resistor of P9 Port
0
Disable
1
Enable
P9OD (P9 Open-drain Selection Register): 4019H (XSFR)
7
6
5
4
3
2
1
0
–
–
–
P94OD
P93OD
P92OD
P91OD
P90OD
–
–
–
R/W
R/W
R/W
R/W
R/W
Initial value: 00H
P9OD[4:0]
Configure Open-drain of P9 Port
0
Push-pull output
1
Open-drain output

Abov MC97F60128 Specifications

General

Brand	Abov
Model	MC97F60128
Category	Microcontrollers
Language	English