97
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
Initial value: 00H
P5IO (P5 Direction Register): B9H
Initial value: 00H
NOTE)
1. RXD3/RXD4/SS1 function possible when input
P5PU (P5 Pull-up Resistor Selection Register): EFH
Initial value: 00H
Configure Pull-up Resistor of P5 Port
P5OD (P5 Open-drain Selection Register): 4015H (XSFR)
Initial value: 00H
Configure Open-drain of P5 Port