AS7C33256PFS32A datasheet(6/20 Pages) ALSC

Part #	AS7C33256PFS32A

Description	3.3V 256K x 32/36 pipelined burst synchronous SRAM

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Manufacturer	ALSC [Alliance Semiconductor Corporation]

Direct Link	https://www.alliancememory.com

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6 / 20 page

AS7C33256PFS32A

AS7C33256PFS36A

®

11/30/04, v.3.1

Alliance Semiconductor

P. 6 of 20

Write enable truth table (per byte)

Key: X = don’t care, L = low, H = high, n = a, b, c, d;

BWE, BWn = internal write signal.

Asynchronous Truth Table

Function

GWE

BWE

BWa

BWb

BWc

BWd

Write All Bytes

L

X

XXX

X

H

L

LL

Write Byte a

HL

LH

H

Write Byte c and d

HL

H

L

Read

HH

XXX

X

H

L

HHH

H

Operation

ZZ

OE

I/O Status

Snooze mode

H

X

High-Z

Read

L

Dout

L

H

High-Z

Write

L

X

Din, High-Z

Deselected

L

X

High-Z

Burst order table

Interleaved Burst Order (LBO=1)

Linear Burst Order (LBO=0)

A1 A0 A1 A0 A1 A0 A1 A0

Starting Address

0 00 11 01 1

Starting Address

0 00 11 01 1

First increment

0 10 01 11 0

First increment

0 11 01 10 0

Second increment

1 0

1 1

0 0

0 1

Second increment

1 0

1 1

0 0

0 1

Third increment

1 11 00 10 0

Third increment

1 10 00 11 0

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Manufacturer	Part #	Datasheet	Description
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Alliance Semiconductor ...	AS7C25512PFD32A	523Kb / 19P	2.5V 512K x 32/36 pipelined burst synchronous SRAM
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AS7C33256PFS32A Datasheet(PDF) 6 Page - Alliance Semiconductor Corporation

AS7C33256PFS32A Datasheet(HTML) 6 Page - Alliance Semiconductor Corporation

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