Pin Functions; Port Pins - NEC uPD75P3116 Datasheet

3. PIN FUNCTIONS

3.1 Port Pins (1/2)

Pin Name I/O Alternate
Function
P00 Input INT4
P01 SCK
P02 SO/SB0
P03 SI/SB1
P10 Input INT0
P11 INT1
P12 TI1/TI2/INT2
P13 TI0
P20 I/O PTO0
P21 PTO1
P22 PCL/PTO2
P23 BUZ
P30 I/O LCDCL/MD0
P31 SYNC/MD1
P32 MD2
P33 MD3
Note 2
P50 I/O D4
Note 2
P51 D5
Note 2
P52 D6
Note 2
P53 D7
Notes 1. Circuit types enclosed in angle brackets indicate Schmitt-triggered input.
2. The low-level input leakage current increases when input instructions or bit manipulation instructions are
executed.
Function
4-bit input port (Port 0)
Connection of an internal pull-up resistor can be
specified by a software setting in 3-bit units.
4-bit input port (Port 1)
Connection of an internal pull-up resistor can be
specified by a software setting in 4-bit units.
P10/INT0 can be used to select a noise eliminator.
4-bit I/O port (Port 2)
Connection of an internal pull-up resistor can be
specified by a software setting in 4-bit units.
Programmable 4-bit I/O port (Port 3)
Input and output can be specified in 1-bit units.
Connection of an internal pull-up resistor can be
specified by a software setting in 4-bit units.
N-ch open-drain 4-bit I/O port (Port 5)
When set to open-drain, the withstanding voltage
is 13 V.
Data Sheet U11369EJ3V0DS
µ PD75P3116
8-Bit Status I/O Circuit
Note 1
I/O After Reset Type
— Input <B>
<F>-A
<F>-B
<M>-C
— Input <B>-C
— Input E-B
— Input E-B
— High M-E
impedance
7