MC-45V8AB642KS Datasheet, PDF (9/16 Pages) Elpida Memory – 8M-WORD BY 64-BIT VirtualChannelTM DYNAMIC RAM MODULE (SO DIMM)

MC-45V8AB642KS
AC characteristics (Background to Background operation)
Parameter
Symbol
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ACT to ACT/REF Command period
REF to REF/ ACT Command period
ACT to PRE Command period
PRE to ACT / REF Command period
ACT to PFC/PFCA Command delay time
ACT to PFR Command delay time (Prefetch Read Operation)
PFC to PRE Command delay time
PFCA / PFR to ACT/REF Command delay time
RST / RSTA to ACT(R) ^Note1 Command delay time
tRC
tRCF
tRAS
tRP
tAPD
tAPRD
tPPL
tPAL
tRAD
-A 75
MIN. MAX.
Unit Notes
67.5
−
ns
67.5
−
ns
52.5 120,000 ns
20
−
ns
15
−
ns
15
−
ns
22.5
−
ns
45
−
ns
7.5
30
ns 2
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ACT(R) ^Note1 to PFC/PFCA/PFR Command delay time
PFC to PFC / PFCA Command delay time
tRPD
37.5
−
ns
tPPD
22.5
−
ns
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ACT to ACT/ACT(R) or ACT(R) to ACT Command delay time tRRD
15
−
ns
ACT(R) to ACT(R) Command delay time
tRRDR
30
−
ns
PFC /PFCA to RST /RSTA Command delay time
tPRD
22.5
−
ns
Notes 1. ACT (R) command is ACT command after RST command.
2. The another background operation and same channel foreground operation are illegal while tRAD period.
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