µPD178023, 178024
1. PIN FUNCTION LIST
1.1 Port Pins
Pin Name
P00-P04
I/O
Function
At Reset
Input
Shared by:
I/O
Port 0.
INTP0-INTP4
7-bit I/O port.
P05, P06
P10-P15
—
Can be set in input or output mode in 1-bit units.
Input
I/O
Port 1.
Input
Input
ANI0-ANI5
6-bit input port.
P30-P32
P33
Port 3.
—
TI50
TI51
—
8-bit I/O port.
Can be set in input or output mode in 1-bit units.
P34
P35
P36
BEEP0
—
P37
P40-47
I/O
Port 4.
Input
—
8-bit I/O port.
Can be set in input or output mode in 1-bit units.
Internal pull-up resistors can be specified in software.
Interrupt function by key input is provided.
P50-P57
P60-P67
I/O
I/O
I/O
Port 5.
Input
Input
Input
—
—
8-bit I/O port.
Can be set in input or output mode in 1-bit units.
Port 6.
8-bit I/O port.
Can be set in input or output mode in 1-bit units.
P70
Port 7.
SI3
8-bit I/O port.
P71
SO3
SCK3
—
Can be set in input or output mode in 1-bit units.
P72
P73
P74
RXD0
TXD0
SDA0
SCL0
—
P75
P76
P77
P120-P125
I/O
Port 12.
Input
6-bit I/O port.
Can be set in input or output mode in 1-bit units.
P130
P131
P132
Output
Port 13.
Low-level
output
TO50
TO51
—
3-bit output port.
N-ch open-drain output port (12 V withstand)
Data Sheet U14126EJ1V0DS00
11
NEC [ NEC ]
