IS62WV5128DBLL-45HI datasheet(10/18 Pages) ISSI

Part #	IS62WV5128DBLL-45HI

Description	512K x 8 LOW VOLTAGE, ULTRA LOW POWER CMOS STATIC RAM

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Manufacturer	ISSI [Integrated Silicon Solution, Inc]

Direct Link	http://www.issi.com

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Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774

Rev. A

02/09/2012

IS62WV5128DALL/DBLL, IS65WV5128DALL/DBLL

WRITE CYCLE SWITCHING CHARACTERISTICS(1,2)(OverOperatingRange)

35ns

45ns

55 ns

Symbol

Parameter

Min. Max.

Min. Max. Unit

tWC

WriteCycleTime

35—

45—

55—

ns

tSCS1

CS1

toWriteEnd

25—

35—

45—

ns

tAW

AddressSetupTimetoWriteEnd 25—

35—

45—

ns

thA

AddressHoldfromWriteEnd

0—

ns

tSA

AddressSetupTime

0—

ns

tPWe

WE

PulseWidth

25—

35—

40—

ns

tSd

DataSetuptoWriteEnd

20—

25—

ns

thd

DataHoldfromWriteEnd

0—

ns

thzWe(3)

WE

LOWtoHigh-ZOutput

—10

—20

ns

tLzWe(3)

WE

HIGHtoLow-ZOutput

3—

5—

ns

Notes:

1. Testconditionsassumesignaltransitiontimesof5nsorless,timingreferencelevelsof0.9V/1.5V,inputpulselevelsof0.4Vto

Vdd-0.2V/Vdd-0.3VandoutputloadingspecifiedinFigure1.

2. TheinternalwritetimeisdefinedbytheoverlapofCS1LOWandWELOW.AllsignalsmustbeinvalidstatestoinitiateaWrite,

butanyonecangoinactivetoterminatetheWrite.TheDataInputSetupandHoldtimingarereferencedtotherisingorfalling

edgeofthesignalthatterminatesthewrite.

3. TestedwiththeloadinFigure2.Transitionismeasured±500mVfromsteady-statevoltage.Not100%tested.

AC WAVEFORMS

WRITE CYCLE NO. 1 (CS1Controlled,OE=HIGHorLOW)

DATA-IN VALID

DATA UNDEFINED

tWC

tSCS1

tAW

tHA

tPWE

tHZWE

HIGH-Z

tLZWE

tSA

tSD

tHD

ADDRESS

CS1

WE

DOUT

DIN

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IS62WV5128DBLL-45HI Datasheet(PDF) 10 Page - Integrated Silicon Solution, Inc

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