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VG36646141BT-8 Datasheet(PDF) 7 Page - Vanguard International Semiconductor |
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VG36646141BT-8 Datasheet(HTML) 7 Page - Vanguard International Semiconductor |
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7 / 70 page  Document : 1G5-0127 Rev2 Page 7 VIS Preliminary VG36641641BT CMOS Synchronous Dynamic RAM Parameter CAS Latency symbol VG36641641B Unit -7 -8 Min Max Min Max CLK cycle time 3 tck3 7 8 ns 2 tck2 10 10 ns CLK to valid output delay 3 tAc3 5 6 ns 2 tAc2 6 6 ns CLK high pulse width tCH 2.5 3 ns CLK low pulse width tCL 2.5 3 ns CKE setup time tCKS 2 2 ns CKE hold time tCKH 1 1 ns Address setup time tAS 2 2 ns Address hold time tAH 1 1 ns Command setup time tCMS 2 2 ns Command hold time tCMH 1 1 ns Data input setup time tDS 2 2 ns Data input hold time tDH 1 1 ns Output data hold time tOH 3 3 ns CLK to output in low - Z tLZ 0 0 ns CLK to output in H - Z 3 tHZ 5 6 ns 2 6 6 CLK to output in Hi - Z without load tOHN 1.8 1.8 ns Row active to active delay tRRD 14 16 ns RAS to CAS delay tRCD 20 20 ns Row precharge time tRP 20 20 ns ROW active time tRAS 40 120K 48 120K ns ROW cycle time tRC 60 68 ns Last data in to burst stop tBDL 1 1 CLK Data - in to ACT(REF) command tDAL 1+ tRP 1+tRP CLK Data - in to precharge tDPL 1 1 CLK Transition time tT 1 10 1 10 ns Mode reg. set cycle tRSC 2 2 CLK Power down exit setup time tPDE 2 2 ns Self refresh exit time tSRX 1 1 CLK Refresh time tREF 64 64 ms A. C Characteristics : (Ta = 0 to 70°C VDD = 3.3V 0.3V, VSS = 0V) |
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