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MSC23V26457SA-XXBS8 Datasheet(PDF) 9 Page - OKI electronic componets |
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MSC23V26457SA-XXBS8 Datasheet(HTML) 9 Page - OKI electronic componets |
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9 / 11 page  MSC23V26457TA-xxBS8/MSC23V26457SA-xxBS8 ¡ Semiconductor 639 8 AC Characteristics (1/2) Parameter Symbol Unit Random Read or Write Cycle Time Note (VCC = 3.3 V ±0.3 V, Ta = 0°C to 70°C) Note 1,2,3,12,13 tRC ns Fast Page Mode Cycle Time tHPC ns Access Time from RAS tRAC ns Access Time from CAS tCAC ns Access Time from Column Address tAA ns Access Time from CAS Precharge tCPA ns Output Low Impedance Time from CAS tCLZ ns CAS to Data Output Buffer Turn-off Delay Time tCEZ ns Transition Time tT ns Refresh Period tREF ms RAS Precharge Time tRP ns RAS Pulse Width tRAS ns RAS Pulse Width (Fast Page Mode) tRASP ns RAS Hold Time tRSH ns CAS Precharge Time tCP ns CAS Pulse Width tCAS ns RAS Low to CAS High Delay Time tCSH ns CAS High to RAS Low Delay Time tCRP ns RAS to CAS Delay Time tRCD ns RAS to Column Address Delay Time tRAD ns Row Address Set-up Time tASR ns Row Address Hold Time tRAH ns Column Address Set-up Time tASC ns Column Address Hold Time tCAH ns Column Address Hold Time from RAS tAR ns Column Address to RAS Lead Time tRAL ns 4, 5, 6 4, 5 4, 6 7, 8 3 5 6 -70 -60 4 RAS Hold Time from CAS Precharge tRHCP ns Min. 130 30 — — — — 0 0 3 — 50 70 70 20 10 20 45 5 20 15 0 10 0 15 45 35 40 Max. — — 70 20 35 40 — 15 50 32 — 10k 100k — — 10k — — 50 35 — — — — — — — Min. 110 25 — — — — 0 0 3 — 40 60 60 15 10 15 40 5 20 15 0 10 0 15 40 30 35 Max. — — 60 15 30 35 — 15 50 32 — 10k 100k — — 10k — — 45 30 — — — — — — — Output Hold Time from CAS Low tDOH ns 5— 5— RAS to Data Output Buffer Turn-off Delay Time tREZ ns 7, 8 015 015 OE to Data Output Buffer Turn-off Delay Time tOEZ ns 7 015 015 RAS to Second CAS Delay Time tRSCD ns 70 — 60 — Read Modify Write Cycle Time tRWC ns Fast Page Mode Read Modify Write Cycle Time tPRWC ns 180 95 — — 150 80 — — Access Time from OE tOEA ns 4 —20 —15 WE to Data Output Buffer Turn-off Delay Time tWEZ ns 7 015 015 RAS Hold Time referenced to OE tROH ns 20 — 15 — CAS, OE Hold Time (Output Disable) tCHO ns 10 — 5— 4 |
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