IS62WV5128DALL/DBLL
IS65WV5128DALL/DBLL
10 Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. A1
11/01/2016
®
Long-term Support
World Class Quality
WRITE CYCLE SWITCHING CHARACTERISTICS
(1,2)
(OverOperatingRange)
35ns 45ns 55 ns
Symbol Parameter Min. Max. Min. Max. Min. Max. Unit
tWC WriteCycleTime 35 — 45 — 55 — ns
tSCS1 CS1toWriteEnd 25 — 35 — 45 — ns
tAW AddressSetupTimetoWriteEnd 25 — 35 — 45 — ns
thA AddressHoldfromWriteEnd 0 — 0 — 0 — ns
tSA AddressSetupTime 0 — 0 — 0 — ns
tPWe WEPulseWidth 25 — 35 — 40 — ns
tSd DataSetuptoWriteEnd 20 — 20 — 25 — ns
thd DataHoldfromWriteEnd 0 — 0 — 0 — ns
thzWe
(3)
WELOWtoHigh-ZOutput — 10 — 20 — 20 ns
tLzWe
(3)
WEHIGHtoLow-ZOutput 3 — 5 — 5 — ns
Notes:
1. Testconditionsassumesignaltransitiontimesof5nsorless,timingreferencelevelsof0.9V/1.5V,inputpulselevelsof0.4Vto
V
dd-0.2V/Vdd-0.3VandoutputloadingspeciedinFigure1.
2. TheinternalwritetimeisdenedbytheoverlapofCS1LOWandWELOW.AllsignalsmustbeinvalidstatestoinitiateaWrite,
butanyonecangoinactivetoterminatetheWrite.TheDataInputSetupandHoldtimingarereferencedtotherisingorfalling
edge of the signal that terminates the write.
3. TestedwiththeloadinFigure2.Transitionismeasured±500mVfromsteady-statevoltage.Not100%tested.
AC WAVEFORMS
WRITE CYCLE NO. 1 (CS1 Controlled, OE=HIGHorLOW)
DATA-IN VALID
DATA UNDEFINED
t
WC
t
SCS1
t
AW
t
HA
tPWE
t
HZWE
HIGH-Z
t
LZWE
t
SA
t
SD
t
HD
ADDRESS
CS1
WE
DOUT
DIN