UPD43257BGU-70LL datasheet(5/20 Pages) NEC

Part #	UPD43257BGU-70LL

Description	256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT

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Manufacturer	NEC [NEC]

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

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Data Sheet M10693EJ7V0DS00

5

µµµµPD43257B

Block Diagram

Address buffer

Memory cell array

262,144 bits

Input data

controller

A0

A14

I/O8

Sense amplifier /

Switching circuit

Column decoder

/CE1

/WE

CE2

Output data

controller

I/O1

VCC

GND

Address

buffer

Row

decoder

Truth Table

/CE1

CE2

/WE

Mode

I/O

Supply current

H

××

Not selected

High impedance

ISB

×

L

×

L

H

Read

DOUT

ICCA

LH

L

Write

DIN

Remark

× : VIH or VIL

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UPD43257BGU-70LL Datasheet(PDF) 5 Page - NEC

UPD43257BGU-70LL Datasheet(HTML) 5 Page - NEC

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