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MC-45V8AB641KFA-A10 Datasheet(PDF) 9 Page - NEC |
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MC-45V8AB641KFA-A10 Datasheet(HTML) 9 Page - NEC |
9 / 6 page Data Sheet M14619EJ2V0DS00 9 MC-45V8AB641 AC characteristics (Background to Background operation) Parameter Symbol -A 75 -A 10 Unit Notes MIN. MAX. MIN. MAX. Same Bank Operation ACT to ACT/REF Command period tRC 67.5 − 80 − ns REF to REF/ ACT Command period tRCF 67.5 − 90 − ns ACT to PRE Command period tRAS 52.5 120,000 60 120,000 ns PRE to ACT / REF Command period tRP 20 − 20 − ns ACT to PFC/PFCA Command delay time tAPD 15 − 20 − ns ACT to PFR Command delay time (Prefetch Read Operation) tAPRD 15 − 20 − ns PFC to PRE Command delay time tPPL 22.5 − 30 − ns PFCA / PFR to ACT/REF Command delay time tPAL 45 − 50 − ns RST / RSTA to ACT(R) Note1 Command delay time tRAD 7.5 301040 ns 2 Same, Other Bank Operation ACT(R) Note1 to PFC/PFCA/PFR Command delay time tRPD 37.5 − 40 − ns PFC to PFC / PFCA Command delay time tPPD 22.5 − 30 − ns Other Bank Operation ACT to ACT/ACT(R) or ACT(R) to ACT Command delay time tRRD 15 − 20 − ns ACT(R) to ACT(R) Command delay time tRRDR 30 − 40 − ns PFC /PFCA to RST /RSTA Command delay time tPRD 22.5 − 30 − 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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