UPD754202 datasheet(8/66 Pages) NEC

Part #	UPD754202

Description	4-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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8

µPD754202, 754202(A)

3.

PIN FUNCTION

3.1 Port Pins

Pin Name

Input/Output

Alternate

Function

8-bit

After Reset

I/O Circuit

Function

I/O

TypeNote

P30

Input/Output

PTO0

–

Input

E-B

P31

PTO1

P32

PTO2

P33

–

P60

Input/Output

–

Input

F -A

P61

INT0

P62

–

P63

–

P70

Input

KR4

–

Input

B -A

P71

KR5

P72

KR6

P73

KR7

P80

Input/Output

–

Input

F -A

Note Circled characters indicate Schmitt trigger input.

Programmable 4-bit input/output port

(PORT3).

This port can be specified input/output bit-

wise.

On-chip pull-up resistor 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 units.

Noise eliminator can be selected on P61/

INT0.

4-bit input port (PORT7).

On-chip pull-up resistor can be specified

bit-wise (mask option).

1-bit input/output port (PORT8).

On-chip pull-up resistor can be specified by

software.

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