U18680EJ1V0PM00_15 Datasheet, PDF (9/30 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µ PD78F9221CS, 78F9222CS
1. PIN FUNCTIONS
1.1 Port Functions
Pin Name
I/O
Function
After Reset
Alternate-
Function Pin
P20 to P23
I/O
P30
I/O
P31
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.
Input
Port 3
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
ANI0 to ANI3
TI000/INTP0
TI010/TO00/
INTP2
P34
P40
P41
P42
P43
P44
P45
P121
P122
P123
P130
Input
I/O
Input only
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.
Input
Input
I/O
Output
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.
Port 13.
1-bit output-only port
Input
Output
RESET
−
INTP3
TOH1
TxD6/INTP1
RxD6
−
X1
X2
−
−
Caution The P121/X1 and P122/X2 pins are pulled down during reset.
Preliminary Product Information U18680EJ1V0PM00
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