67
CHAPTER 3 PIN FUNCTION (
µ
PD78078 SUBSERIES)
Input/
output
N-ch open-drain input/output port.
On-chip pull-up resistor can be
specified by mask option.
(Mask ROM version only).
LEDs can be driven directly.
(1) Port pins (3/3)
Pin Name
Input/Output
Function
After Reset Alternate Function
P90
P91
Port 9.
P92
7-bit input/output port.
P93
Input/output mode can be
Input
—
P94
specified bit-wise.
If used as an input port, an on-chip
P95
pull-up resistor can be connected
P96
by software.
Port 10.
Input/
4-bit input/output port.
output
Input/output mode can be specified bit-wise.
If used as an input port, an on-chip pull-up resistor can be connected
by software.
Port 12.
Input/
8-bit input/output port.
output
Input/output mode can be specified bit-wise.
If used as an input port, an on-chip pull-up resistor can be connected
by software.
Port 13.
Input/
2-bit input/output port.
output
Input/output mode can be specified bit-wise.
If used as an input port, an on-chip pull-up resistor can be connected
by software.
P100
TI5/TO5
P101
Input
TI6/TO6
P102, P103
—
P120 to P127
Input
RTP0 to RTP7
P130, P131
Input
ANO0, ANO1
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