Abov MC96F8204 Series, User Manual

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MC96F8204 ABOV Semiconductor Co., Ltd.
9.3 P0 Port
9.3.1 P0 Port Description
P0 is 8-bit I/O port. P0 control registers consist of P0 data register (P0), P0 direction register (P0IO), debounce enable
register (P0DB), P0 pull-up resistor selection register (P0PU), and P0 open-drain selection register (P0OD). Refer to
the port function selection registers for the P0 function selection.
9.3.2 Register description for P0
P0 (P0 Data Register) : 80H
7 6 5 4 3 2 1 0
P07 P06 P05 P04 P03 P02 P01 P00
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P0[7:0] I/O Data
P0IO (P0 Direction Register) : 88H
7 6 5 4 3 2 1 0
P07IO P06IO P05IO P04IO P03IO P02IO P01IO P00IO
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P0IO[7:0] P0 Data I/O Direction.
0 Input
1 Output
NOTE)
1. SS/EC1/EC2/EINT0/EINT1/EINT10-EINT12 function possible when
input
P0PU (P0 Pull-up Resistor Selection Register) : 93H
7 6 5 4 3 2 1 0
P07PU P06PU P05PU P04PU P03PU P02PU P01PU P00PU
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P0PU[7:0] Configure Pull-up Resistor of P0 Port
0 Disable
1 Enable
P0OD (P0 Open-drain Selection Register) : 94H
7 6 5 4 3 2 1 0
P07OD P06OD P05OD P04OD P03OD P02OD P01OD P00OD
R/W R/W R/W R/W R/W R/W R/W R/W
Initial value : 00H
P0OD[7:0] Configure Open-drain of P0 Port
0 Push-pull output
1 Open-drain output