CY7C1347G_12 datasheet(10/25 Pages) CYPRESS

Part #	CY7C1347G

Description	4-Mbit (128 K 횞 36) Pipelined Sync SRAM

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Manufacturer	CYPRESS [Cypress Semiconductor]

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CY7C1347G

Document Number: 38-05516 Rev. *L

Page 10 of 25

Partial Truth Table for Read/Write

The partial truth table for read/write for part number CY7C1347G follow.

Function [6, 7]

GW

BWE

BWD

BWC

BWB

BWA

Read

H

X

Read

H

L

HH

Write byte A – DQA

HL

H

HL

Write byte B – DQB

HL

H

LH

Write bytes B, A

H

L

H

L

Write byte C – DQC

HL

HLH

H

Write bytes C, A

H

L

H

L

H

L

Write bytes C, B

H

L

H

L

H

Write bytes C, B, A

H

L

H

L

Write byte D – DQD

HL

LH

H

Write bytes D, A

H

L

H

L

Write bytes D, B

H

L

H

L

H

Write bytes D, B, A

H

L

H

L

Write bytes D, C

H

L

H

Write bytes D, C, A

H

L

H

L

Write bytes D, C, B

H

L

H

Write all bytes

H

LLL

LL

Write all bytes

L

X

Notes

6. X = “Do not Care.” H = Logic HIGH, L = Logic LOW.

7. This table is only a partial listing of the byte write combinations. Any combination of BWx is valid. Appropriate write is based on which byte write is active.

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CY7C1347G Datasheet(PDF) 10 Page - Cypress Semiconductor

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