µPD754264
3. PIN FUNCTION
3.1 Port Pins
Pin Name
P30
P31
P32
P33
P60
P61
P62
P63
P70
P71
P72
P73
P80
Input/Output
Input/Output
Input/Output
Input
Input/Output
Alternate
Function
PTO0
PTO1
PTO2
–
AVREF
INT0
AN0
AN1
KR4
KR5
KR6
KR7
–
Function
8-bit
I/O Circuit
After Reset
I/O
TYPE Note 1
Programmable 4-bit input/output port (PORT3). –
Input
E-B
This port can be specified input/output bit-
wise.
On-chip pull-up resistor connection can be
specified by software in 4-bit units.
Programmable 4-bit input/output port (PORT6). –
This port can be specified input/output bit-
wise.
On-chip pull-up resistor can be specified by
software in 4-bit unitsNote2.
Input
F -A
Noise eliminator can be selected with P61/ –
INT0.
4-bit input port (PORT7).
On-chip pull-up resistor can be specified by
software bit-wise.
Input
B -A
1-bit input/output port (PORT8).
–
On-chip pull-up resistor connection can be
specified by software.
Input
F -A
Notes 1. Circled characters indicate the Schmitt-trigger input.
2. Do not specify an on-chip pull-up resistor connection when using the A/D converter.
7