IBM nec pd78082 User Manual

Pin Name

Input/Output

Function

Dual-Function Pin

P00

Input

Port 0

Input only

—

P01

Input/output

4-bit input/output port

Input/output is specifiable bit-wise.  When

INTP1

P02

used as the input port, it is possible to connect

INTP2

P03

a pull-up resistor by software.

INTP3

P10-P17

Input/output

Port 1

ANI0-ANI7

8-bit input/output port

Input/output is specifiable bit-wise.

When used  as the input port, it is possible to connect a pull-up resistor

by software.

P30-P34

Input/output

Port 3

—

P35

8-bit input/output port

PCL

P36

Input/output is specifiable bit-wise.

BUZ

P37

When used  as the input port, it is possible to connect a pull-up resistor

—

by software.

P50-P57

Input/output

Port 5

—

8-bit input/output port

A maximum of 7 out of 8 ports can drive LEDs directly.

Input/output is specifiable bit-wise.

When used  as the input port, it is possible to connect a pull-up resistor

by software.

P70

Input/output

Port 7

SI2/RxD

P71

3-bit input/output port

SO2/TxD

P72

Input/output is specifiable bit-wise.

SCK2/ASCK

When used  as the input port, it is possible to connect a pull-up resistor

by software.

P100

Input/output

Port 10

TI5/TO5

P101

2-bit input/output port

TI6/TO6

Input/output is specifiable bit-wise.

When used  as the input port, it is possible to connect a pull-up resistor

by software.