WED8L24257V datasheet(3/6 Pages) WEDC

Part #	WED8L24257V

Description	Asynchronous SRAM, 3.3V, 256Kx24

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Manufacturer	WEDC [White Electronic Designs Corporation]

Direct Link	http://www.whiteedc.com

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White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com

July 2002 Rev. 1A

ECO #15432

WED8L24257V

AC CHARACTERISTICS READ CYCLE

Symbol

10ns

12ns

15ns

Parameter

JEDEC

Alt.

Min Max

Units

Read Cycle Time

TAVAV

TRC

1012

15

ns

AddressAccess Time

TAVQV

TAA

1012

15

ns

Chip EnableAccess Time

TELQV

TACS

1012

15

ns

Chip Enable to Output in Low Z (1)

TELQX

TCLZ

3

ns

Chip Disable to Output in High Z (1)

TEHQZ

TCHZ

5

6

7

ns

Output Hold fromAddress Change

TAVQX

TOH

3

ns

Output Enable to Output Valid

TGLQV

TOE

5

6

7

ns

Output Enable to Output in Low Z (1)

TGLQX

TOLZ

00 0

ns

Output Disable to Output in High Z(1)

TGHQZ

TOHZ

5

6

7

ns

FIG. 4 READCYCLE1-WHIGH,G,ELOW

FIG. 5 READCYCLE2-WHIGH

A

Q

tAVQV

tELQV

tGLQV

tELQX

tGLQX

tAVAV

tEHQZ

tGHQZ

G

E

NOTE 1: Parameter is guaranteed, but not tested.

A

Q

tAVQX

tAVQV

tAVAV

DATA 2

ADDRESS 1

ADDRESS 2

DATA 1

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