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MSM518205-70 Datasheet(PDF) 6 Page - OKI electronic componets |
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MSM518205-70 Datasheet(HTML) 6 Page - OKI electronic componets |
6 / 18 page 6/18 ¡ Semiconductor MSM518205 AC Characteristics (1/2) Random Read or Write Cycle Time Read Modify Write Cycle Time Fast Page Mode Cycle Time Fast Page Mode Read Modify Write Cycle Time Access Time from RAS Access Time from CAS Access Time from Column Address Access Time from CAS Precharge CAS to Data Output Buffer Turn-off Delay Time Transition Time RAS Precharge Time RAS Pulse Width RAS Pulse Width (Fast Page Mode with EDO) RAS Hold Time CAS Pulse Width CAS Hold Time RAS to CAS Delay Time RAS to Column Address Delay Time CAS to RAS Precharge Time Row Address Set-up Time Row Address Hold Time Column Address Set-up Time Column Address Hold Time Column Address Hold Time from RAS Column Address to RAS Lead Time Access Time from OE OE to Data Output Buffer Turn-off Delay Time Refresh Period RAS Hold Time referenced to OE RAS Hold Time from CAS Precharge tRC tRWC tHPC tHPRWC tRAC tCAC tAA tCPA tCEZ tT tRP tRAS tRASP tRSH tCAS tCSH tRCD tRAD tCRP tASR tRAH tASC tCAH tRAL tOEA tOEZ tREF tROH tRHCP Output Low Impedance Time from CAS tCLZ CAS Precharge Time (Fast Page Mode with EDO) tCP tAR Parameter MSM518205 -60 MSM518205 -70 MSM518205 -80 (VCC = 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3, 12, 13 Symbol Note 4, 5, 6 4, 5 4, 6 4, 15 7, 8 17 5 6 15 14 14 4 7 4 3 Max. — — — — 60 15 30 35 — 15 50 — 10,000 100,000 — — 10,000 — 45 30 — — — — — — — 15 15 64 — Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ms ns ns Min. 150 205 35 105 — — — — 0 0 2 60 80 80 20 10 15 50 20 15 10 0 10 0 15 50 40 — 0 — 10 45 Max. — — — — 80 20 40 45 — 15 50 — 10,000 100,000 — — 10,000 — 60 40 — — — — — — — 20 15 64 — — Min. 130 185 30 100 — — — — 0 0 2 50 70 70 20 10 10 45 20 15 10 0 10 0 15 45 35 — 0 — 10 40 Max. — — — — 70 20 35 40 — 15 50 — 10,000 100,000 — — 10,000 — 50 35 — — — — — — — 20 15 64 — — Min. 110 155 25 85 — — — — 0 0 2 40 60 60 15 10 10 40 20 15 10 0 10 0 10 40 30 — 0 — 10 35 — Data Output Hold After CAS Low WE to Data Output Buffer Turn-off Delay Time RAS to Data Output Buffer Turn-off Delay Time tDOH tWEZ tREZ 7, 8 7 — 15 15 ns ns ns 5 0 0 — 15 15 5 0 0 — 15 15 5 0 0 OE Hold Time from CAS (DQ Disable) RAS to Second CAS Delay Time tCHO tRSCD — — ns ns 10 80 — — 10 70 — — 5 60 |
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