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HY5DU12822B Datasheet(PDF) 31 Page - Hynix Semiconductor |
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HY5DU12822B Datasheet(HTML) 31 Page - Hynix Semiconductor |
31 / 37 page ![]() Rev. 0.1 / May 2004 31 HY5DU12422B(L)TP HY5DU12822B(L)TP HY5DU121622B(L)TP AC CHARACTERISTICS I (AC operating conditions unless otherwise noted) Parameter Symbol DDR333 DDR266 UNIT NOTE Min Max Min Max Row Cycle Time tRC 60 - 60 - ns Auto Refresh Row Cycle Time tRFC 72 - 75 - ns Row Active Time tRAS 42 70K 45 120K ns Active to Read with Auto Precharge Delay tRAP tRCD or tRPmin - tRCD or tRPmin -ns 16 Row Address to Column Address Delay tRCD 18 - 15 - ns Row Active to Row Active Delay tRRD 12 - 15 - ns Column Address to Column Address Delay tCCD 1 - 1 - CK Row Precharge Time tRP 18 - 15 - ns Write Recovery Time tWR 15 - 15 - ns Internal Write to Read Command Delay tWTR 1 - 1 - CK Auto Precharge Write Recovery + Precharge Time tDAL (tWR/tCK) + (tRP/tCK) - (tWR/tCK) + (tRP/tCK) -CK 15 System Clock Cycle Time CL = 2.5 tCK 612 7.5 12 ns CL = 2 7.5 12 7.5 12 ns Clock High Level Width tCH 0.45 0.55 0.45 0.55 CK Clock Low Level Width tCL 0.45 0.55 0.45 0.55 CK Data-Out edge to Clock edge Skew tAC -0.7 0.7 -0.75 0.75 ns DQS-Out edge to Clock edge Skew tDQSCK -0.6 0.6 -0.75 0.75 ns DQS-Out edge to Data-Out edge Skew tDQSQ - 0.45 - 0.5 ns Data-Out hold time from DQS tQH tHP -tQHS - tHP -tQHS -ns 1,10 Clock Half Period tHP min (tCL,tCH) - min (tCL,tCH) -ns 1,9 Data Hold Skew Factor tQHS - 0.55 - 0.75 ns 10 Valid Data Output Window tDV tQH-tDQSQ tQH-tDQSQ ns Data-out high-impedance window from CK,/CK tHZ -0.7 0.7 -0.75 0.75 ns 17 Data-out low-impedance window from CK, /CK tLZ -0.7 0.7 -0.75 0.75 ns Input Setup Time (fast slew rate) tIS 0.75 - 0.9 - ns 2,3,5,6 Input Hold Time (fast slew rate) tIH 0.75 - 0.9 - ns |
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