Chapter 2 Pin Functions; Pin Function List - NEC 78K0S/KA1+ Preliminary User's Manual

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2.1 Pin Function List

(1) Port pins
Pin Name
P20 to P23
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P30
P31
P34
P40
P41
P42
P43
P44
P45
P121
P122
P123
P130

CHAPTER 2 PIN FUNCTIONS

I/O
I/O Port 2.
4-bit I/O port.
Can be set to input or output mode in 1-bit units.
An on-chip pull-up resistor can be connected by setting software.
I/O Port 3
Input
I/O Port 4.
6-bit I/O port.
Can be set to input or output mode in 1-bit units.
An on-chip pull-up resistor can be connected by setting software.
I/O Port 12.
3-bit I/O port.
Can be set to input or output mode in 1-bit units.
An on-chip pull-up resistor can be connected only to P123 by
setting software.
Output Port 13.
1-bit output-only port
Preliminary User's Manual U16898EJ1V0UD
Function
Can be set to input or output mode in 1-
bit units.
An on-chip pull-up resistor can be
connected by setting software.
Input only
After Reset Alternate-
Function Pin
Input ANI0 to ANI3
Input TI000/INTP0
TI010/TO00/
INTP2
Input RESET
−
Input
INTP3
TOH1
TxD6/INTP1
RxD6
−
Input X1
X2
−
−
Output
19