Abov MC97F60128, User Manual, Page: 103 / 382

103
MC97F60128 ABOV Semiconductor Co., Ltd.
9.10 P7 Port
9.10.1 P7 Port Description
P7 is 8-bit I/O port. P7 control registers consist of P7 data register (P7), P7 direction register (P7IO), P7 pull-up resistor
selection register (P7PU) and P7 open-drain selection register (P7OD) . Refer to the port function selection registers
for the P7 function selection.
9.10.2 Register description for P7
P7 (P7 Data Register): C0H
7 6 5 4 3 2 1 0
P77 P76 P75 P74 P73 P72 P71 P70
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P7[7:0] I/O Data
P7IO (P7 Direction Register): C9H
7 6 5 4 3 2 1 0
P77IO P76IO P75IO P74IO P73IO P72IO P71IO P70IO
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P7IO[7:0] P7 Data I/O Direction
0 Input
1 Output
P7PU (P7 Pull-up Resistor Selection Register): A7H
7 6 5 4 3 2 1 0
P77PU P76PU P75PU P74PU P73PU P72PU P71PU P70PU
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P7PU[7:0] Configure Pull-up Resistor of P7 Port
0 Disable
1 Enable
P7OD (P7 Open-drain Selection Register): 4017H (XSFR)
7 6 5 4 3 2 1 0
P77OD P76OD P75OD P74OD P73OD P72OD P71OD P70OD
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P7OD[7:0] Configure Open-drain of P7 Port
0 Push-pull output
1 Open-drain output