GS8170LW72C-250I 查看數據表（PDF） - Giga Semiconductor

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GS8170LW72C-250I

18Mb Σ1x1Lp CMOS I/O Late Write SigmaRAM™

Giga Semiconductor 

GS8170LW36/72C-333/300/250/200

Byte Write Control

The Byte Write Enable inputs (Bx) determine which bytes will be written. Any combination of Byte Write Enable control pins,

including all or none, may be activated. A Write Cycle with no Byte Write inputs active is a write abort cycle.

Example of x36 Byte Write Truth Table

Function

Read

Write Byte A

Write Byte B

Write Byte C

Write Byte D

Write all Bytes

Write Abort

W

Ba

Bb

Bc

Bd

H

X

X

X

X

L

L

H

H

H

L

H

L

H

H

L

H

H

L

H

L

H

H

H

L

L

L

L

L

L

L

H

H

H

H

CK

Address

ADV

E1

Ba

Bb

DQA0–DQA8

DQB0–DQB8

CQ

Two Byte Write Control Example with Late Write SigmaRAM

Write A

Write B

Write C

Non-Write

Write D

A

B

C

D

Write E

E

D(A)

D(A)

D(B)

D(C)

D(D)

D(E)

D(E)

Rev: 2.03 1/2005

6/27

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

© 2002, GSI Technology, Inc.

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