
7
μ
PD75238
1. PIN FUNCTIONS
1.1 PORT PINS (1/2)
Notes 1.
The circuits enclosed in circles have a Schmitt-triggered input.
2.
An LED can be driven directly.
×
×
×
×
H
H
With noise elimination function
4-bit input port (port 0).
For P01 to P03, pull-up resistors can be
provided by software in units of 3 bits.
4-bit input port (port 1).
Pull-up resistors can be provided by software
in units of 4 bits.
4-bit I/O port (port 2).
Pull-up resistors can be provided by software
in units of 4 bits.
Programmable 4-bit I/O port (port 3).
Input/output can be specified bit by bit.
Pull-up resistors can be provided by software
in units of 4 bits.
N-ch open-drain 4-bit I/O port (port 4).
A pull-up resistor can be provided bit by bit
(mask option).
Withstand voltage is 10 V in open-drain mode.
N-ch open-drain 4-bit I/O port (port 5).
A pull-up resistor can be provided bit by bit
(mask option).
Withstand voltage is 10 V in open-drain mode.
Programmable 4-bit I/O port (port 6).
Input/output can be specified bit by bit.
Pull-up resistors can be provided by software
in units of 4 bits.
4-bit I/O port (port 7).
A pull-down resistor can be provided bit by bit
(mask option).
Pin name
B
F
- A
F
- B
M
- C
B
- C
E - B
E - C
M
M
E
- C
V
Input
Input
Input
Input
High level
(when a pull-up
resistor is
provided) or
high impedance
High level
(when a pull-up
resistor is
provided) or
high impedance
Input
V
SS
level (when
a pull-down
resistor is
provided) or
high impedance
When reset
Function
I/O
Note 1
circuit
type
I
I
I/O
I/O
I/O
I/O
I/O
I/O
INT4
SCK0
SO0/SB0
SI0/SB1
INT0
INT1
INT2
TI0
PTO0
–
PCL
BUZ
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Also
used as
I/O
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30
Note 2
P31
Note 2
P32
Note 2
P33
Note 2
P40-P43
Note 2
P50-P53
Note 2
P60
P61
P62
P63
P70
P71
P72
P73
8-bit I/O