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IS41C16256-25K Datasheet(PDF) 7 Page - Integrated Circuit Solution Inc |
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IS41C16256-25K Datasheet(HTML) 7 Page - Integrated Circuit Solution Inc |
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7 / 20 page  IS41C16256 IS41LV16256 Integrated Circuit Solution Inc. 7 DR001-0E 01/25/2002 AC CHARACTERISTICS(1,2,3,4,5,6) (Recommended Operating Conditions unless otherwise noted.) -25 -35 -50 -60 Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Units tRC Random READ or WRITE Cycle Time 45 — 60 — 90 — 110 — ns tRAC Access Time from RAS(6, 7) —25 — 35 —50 — 60 ns tCAC Access Time from CAS(6, 8, 15) —10 — 10 —14 — 15 ns tAA Access Time from Column-Address(6) —12 — 18 —25 — 30 ns tRAS RAS Pulse Width 25 10K 35 10K 50 10K 60 10K ns tRP RAS Precharge Time 15 — 20 — 30 — 40 — ns tCAS CAS Pulse Width(26) 4 10K 6 10K 8 10K 10 10K ns tCP CAS Precharge Time(9, 25) 4— 5 — 8 — 10 — ns tCSH CAS Hold Time (21) 25 — 35 — 50 — 60 — ns tRCD RAS to CAS Delay Time(10, 20) 10 17 11 28 19 36 20 45 ns tASR Row-Address Setup Time 0 — 0 — 0 — 0 — ns tRAH Row-Address Hold Time 6 — 6 — 8 — 10 — ns tASC Column-Address Setup Time(20) 0— 0 — 0 — 0— ns tCAH Column-Address Hold Time(20) 5— 6 — 8 — 10 — ns tAR Column-Address Hold Time 19 — 30 — 40 — 40 — ns (referenced to RAS) tRAD RAS to Column-Address Delay Time(11) 820 10 20 14 2515 30 ns tRAL Column-Address to RAS Lead Time 12 — 18 — 25 — 30 — ns tRPC RAS to CAS Precharge Time 0 — 0 — 0 — 0 — ns tRSH RAS Hold Time(27) 7— 8 — 14 —15 — ns tCLZ CAS to Output in Low-Z(15, 29) 3— 3 — 3 — 3— ns tCRP CAS to RAS Precharge Time(21) 5— 5 — 5 — 5— ns tOD Output Disable Time(19, 28, 29) 2 12 3 12 3 12 3 12 ns tOE Output Enable Time(15, 16) 08 0 10 0 15 — 15 ns tOEHC OE HIGH Hold Time from CAS HIGH 10 — 10 — 10 — 10 — ns tOEP OE HIGH Pulse Width 10 — 10 — 10 — 10 — ns tOES OE LOW to CAS HIGH Setup Time 5 — 5 — 5 — 5 — ns tRCS Read Command Setup Time(17, 20) 0— 0 — 0 — 0— ns tRRH Read Command Hold Time 0 — 0 — 0 — 0 — ns (referenced to RAS)(12) tRCH Read Command Hold Time 0 — 0 — 0 — 0 — ns (referenced to CAS)(12, 17, 21) tWCH Write Command Hold Time(17, 27) 5— 5 — 8 — 10 — ns tWCR Write Command Hold Time 19 — 30 — 40 — 50 — ns (referenced to RAS)(17) tWP Write Command Pulse Width(17) 5— 5 — 8 — 10 — ns tWPZ WE Pulse Widths to Disable Outputs 10 — 10 — 10 — 10 — ns tRWL Write Command to RAS Lead Time(17) 7— 8 — 14 —15 — ns tCWL Write Command to CAS Lead Time(17, 21) 5— 8 — 14 —15 — ns tWCS Write Command Setup Time(14, 17, 20) 0— 0 — 0 — 0— ns tDHR Data-in Hold Time (referenced to RAS) 19— 30 — 40— 40 — ns |
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