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IS62LV2568LL-70B Datasheet(PDF) 7 Page - Integrated Silicon Solution, Inc |
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IS62LV2568LL-70B Datasheet(HTML) 7 Page - Integrated Silicon Solution, Inc |
7 / 10 page IS62LV2568LL ISSI® Integrated Silicon Solution, Inc. — 1-800-379-4774 7 Rev. B 05/03/00 WRITE CYCLE SWITCHING CHARACTERISTICS(1,3) (Over Operating Range, Standard and Low Power) -70 -85 Symbol Parameter Min. Max. Min. Max. Unit tWC Write Cycle Time 70 — 85 — ns tSCE1 CE1 to Write End 65 — 70 — ns tSCE2 CE2 to Write End 65 — 70 — ns tAW Address Setup Time to Write End 65 — 70 — ns tHA Address Hold from Write End 0 — 0 — ns tSA Address Setup Time 0 — 0 — ns tPWE(4) WE Pulse Width 60 — 60 — ns tSD Data Setup to Write End 30 — 35 — ns tHD Data Hold from Write End 0 — 0 — ns tHZWE(2) WE LOW to High-Z Output — 33 — 25 ns tLZWE(2) WE HIGH to Low-Z Output 5 — 5 — ns Notes: 1. Testconditionsassumesignaltransitiontimesof5nsorless,timingreferencelevelsof1.3V,inputpulselevelsof0.4Vto2.2VandoutputloadingspecifiedinFigure1. 2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested. 3. Theinternalwritetimeisdefinedbytheoverlapof CE1LOW,CE2HIGHandWELOW. AllsignalsmustbeinvalidstatestoinitiateaWrite,butanyonecangoinactiveto terminatetheWrite. TheDataInputSetupandHoldtimingarereferencedtotherisingorfallingedgeofthesignalthatterminatestheWrite. 4. Tested with OE HIGH. DATA-IN VALID DATA UNDEFINED tWC tSCE1 tSCE2 tAW tHA tPWE(4) tHZWE HIGH-Z tLZWE tSA tSD tHD ADDRESS CE1 CE2 WE DOUT DIN AC WAVEFORMS WRITE CYCLE NO. 1 (CE Controlled, OE = HIGH or LOW) |
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