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MK31VT864-10YE Datasheet(PDF) 8 Page - OKI electronic componets |
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MK31VT864-10YE Datasheet(HTML) 8 Page - OKI electronic componets |
8 / 11 page MK31VT864-10YE (98.09.03) Page 8/11 AC CHARACTERISTIC (Vcc = 3.3V ± 0.3V, Ta = 0 ~ 70°C) NOTE 1, 2 . Parameter Symbol Module Spec. Unit Note Min. Max. CL=3 tCC 10 -ns Clock Cycle Time CL=2 15 -ns CL=3 tAC - 9ns 3, 4 Access Time from Clock CL=2 - 9ns 3, 4 Clock "H" Pulse Time tCH 3 -ns Clock "L" Pulse Time tCL 3 -ns Input Setup Time tSI 3 -ns Input Hold Time tHI 1 -ns Output Low Impedance Time from Clock tOLZ 3 -ns Output High Impedance Time from Clock tOHZ - 8ns Output Hold from Clock tOH 3 -ns 3 /RAS Cycle Time tRC 90 -ns /RAS Precharge Time tRP 30 -ns /RAS Active Time tRAS 60 1,000,000 ns /RAS to /CAS Delay Time tRCD 30 -ns Write Recovery Time tWR 15 -ns /RAS to /RAS Bank Active Delay Time tRRD 20 -ns Refresh Time tREF - 64 ms Power-down Exit Set-up Time tPDE tSI+1CLK -ns Input Level Transition Time tT - 3ns /CAS to /CAS Delay Time (Min) ICCD 1 Cycle Clock Disable Time from CKE ICKE 1 Cycle Data Output High Impedance Time from UDQM, LDQM IDOZ 2 Cycle Data Input Mask Time from DQMB IDOD 0 Cycle Data Input Time from Write Command IDWD 0 Cycle Data Output High Impedance Time from Precharge Command. IROH 2 Cycle Active Command Input Time from MODE Register Set Command Input (Min) IMRD 3 Cycle Write Command Input Time from Output IOWD 2 Cycle NOTES: 1) AC measurements assume tT=1ns. 2) The reference level for timing of input signals is 1.4V. 3) This parameter is measured with a load circuit equivalent to 1 TTL load and 50pF (RLoad is 50ohm). 4) An access time is measured at 1.4V. 5) If tT is longer than 1ns, the reference level for timing of input signals are VIH and VIL. OUTPUT 50pF OUTPUT LOAD 50 Ω 1.4v |
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