UPD75P238GJ-5BG datasheet(5/50 Pages) NEC

Part #	UPD75P238GJ-5BG

Description	4-BIT SINGLE CHIP MICROCOMPUTER

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Manufacturer	NEC [NEC]

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

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5

µPD75P238

1.

PIN FUNCTIONS

1.1

PORT PINS (1/2)

Pin Name

P00

P01

P02

P03

P10

P11

P12

P13

P20

P21

P22

P23

P30 to P33 *2

P40 to P43 *2

P50 to P53 *2

P60 to P63

P70 to P73

Function

4-bit input port (PORT0).

Internal pull-up resistor specification by

software is possible for P01 to P03 as a 3-

bit unit.

4-bit input port (PORT1).

Internal pull-up resistor specification by

software is possible as a 4-bit unit.

4-bit input/output port (PORT2).

Internal pull-up resistor specification by

software is possible as a 4-bit unit.

Programmable 4-bit input/output port (PORT3).

Input/output settable bit-wise.

Internal pull-up resistor specification by

software is possible as a 4-bit unit.

N-ch open-drain 4-bit input/output port

(PORT4).

Data input/output pins for program memory

write/verify (low-order 4 bits).

N-ch open-drain 4-bit input/output port

(PORT5).

Data input/output pins for program memory

write/verify (high-order 4 bits).

Input/Output

Input

Input/output

With noise elimination

function

Dual-Function

INT4

SCK0

SO0/SB0

SI0/SB1

INT0

INT1

INT2

TI0

PTO0

—

PCL

BUZ

MD0 to MD3

—

*1. A circle denotes Schmitt-triggerd input.

2. Direct LED drive capability

After Reset

Input

Input/Output

Circuit Type*1

B

F – A

F – B

M – C

B – C

E – B

E – C

M – A

E – C

E

8-Bit I/O

×

Programmable 4-bit input/output port (PORT6).

Input/output settable bit-wise.

Internal pull-up resistor specification by

software is possible as a 4-bit unit.

4-bit input/output port (PORT7).

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UPD75P238GJ-5BG Datasheet(PDF) 5 Page - NEC

UPD75P238GJ-5BG Datasheet(HTML) 5 Page - NEC

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