Abov MC97F60128, User Manual, Page: 97 / 382

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MC97F60128 ABOV Semiconductor Co., Ltd.
9.8 P5 Port
9.8.1 P5 Port Description
P5 is 8-bit I/O port. P5 control registers consist of P5 data register (P5), P5 direction register (P5IO), P5 pull-up resistor
selection register (P5PU) and P5 open-drain selection register (P5OD) . Refer to the port function selection registers
for the P5 function selection.
9.8.2 Register description for P5
P5 (P5 Data Register): B0H
7 6 5 4 3 2 1 0
P57 P56 P55 P54 P53 P52 P51 P50
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P5[7:0] I/O Data
P5IO (P5 Direction Register): B9H
7 6 5 4 3 2 1 0
P57IO P56IO P55IO P54IO P53IO P52IO P51IO P50IO
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P5IO[7:0] P5 Data I/O Direction
0 Input
1 Output
NOTE)
1. RXD3/RXD4/SS1 function possible when input
P5PU (P5 Pull-up Resistor Selection Register): EFH
7 6 5 4 3 2 1 0
P57PU P56PU P55PU P54PU P53PU P52PU P51PU P50PU
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P5PU[7:0] Configure Pull-up Resistor of P5 Port
0 Disable
1 Enable
P5OD (P5 Open-drain Selection Register): 4015H (XSFR)
7 6 5 4 3 2 1 0
P57OD P56OD P55OD P54OD P53OD P52OD P51OD P50OD
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value: 00H
P5OD[7:0] Configure Open-drain of P5 Port
0 Push-pull output
1 Open-drain output