UPD43256BCZ-85L 查看數據表（PDF） - NEC => Renesas Technology

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UPD43256BCZ-85L

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

NEC => Renesas Technology 

Block Diagram

A0

|

A14

I/O1

|

I/O8

µPD43256B

Memory cell array

262,144 bits

Input data

controller

Sense/Switch

Column decoder

Address buffer

Output data

controller

CS

OE

WE

VCC

GND

Truth Table

CS

OE

WE

H

×

×

L

H

H

L

×

L

L

L

H

Mode

Not selected

Output disable

Write

Read

I/O

High impedance

DIN

DOUT

Supply current

ISB

ICCA

Remark ×: Don’t care

5

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