NEC uPD78P078 - Manual (Page 67)

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