UPD753012GC NEC, UPD753012GC Datasheet - Page 8

• Manufacturer Part Number: UPD753012GC
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

3. PIN FUNCTION
3.1 Port Pins (1/2)
Notes 1.
8
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30
P31
P32
P33
P40-P43
P50-P53
Pin Name
2.
Note 2
Note 2
Circled characters indicate the Schmitt-trigger input.
If on-chip pull-up resistors are not specified by mask option (when used as N-ch open-drain input port),
low level input leakage current increases when input or bit manipulation instruction is executed.
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Input
Input
Function Pin
TI1/TI2/INT2
PCL/PTO2
SO/SB0
LCDCL
SI/SB1
SYNC
PTO0
PTO1
INT4
INT0
INT1
Dual
SCK
BUZ
TI0
–
–
–
–
4-bit input port (PORT0).
For P01 to P03, on-chip pull-up resistors
can be specified in software in 3-bit units.
4-bit input port (PORT1).
On-chip pull-up resistors can be specified
in software in 4-bit units.
Noise eliminator can be selected (Only
P10/INT0)
4-bit input/output port (PORT2).
On-chip pull-up resistors can be specified
in software in 4-bit units.
Programmable 4-bit input/output port
(PORT3).
This port can be specified input/output in
bit units.
On-chip pull-up resistor can be specified in
software in 4-bit units.
N-ch open-drain 4-bit input/output port
(PORT4).
A pull-up resistor can be contained bit-wise
(mask option).
Withstand voltage is 13 V in open-drain mode.
N-ch open-drain 4-bit input/output port
(PORT5).
A pull-up resistor can be contained bit-wise
(mask option).
Withstand voltage is 13 V in open-drain mode.
Function
PD753012, 753016, 753017
8-bit
I/O
High level
(when pull-up
resistors are
contained) or
high
impedance
High level
(when pull-up
resistors are
provided) or
high
impedance
At Reset
Input
Input
Input
input
TYPE
I/O Circuit
M -C
B -C
F -A
F -B
M-D
M-D
E-B
E-B
B
Note 1