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MC-45D32CC721KFA-C80 Scheda tecnica(PDF) 9 Page - NEC |
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MC-45D32CC721KFA-C80 Scheda tecnica(HTML) 9 Page - NEC |
9 / 6 page Preliminary Data Sheet M14900EJ1V0DS00 9 MC-45D32CC721 Asynchronous Characteristics Parameter Symbol -C75(PC266B) -C80(PC200) Unit MIN. MAX. MIN. MAX. ACT to REF/ACT command period (operation) tRC 65 70 ns REF to REF/ACT command period (refresh) tRFC 75 80 ns ACT to PRE command period tRAS 45 120,000 50 120,000 ns PRE to ACT command period tRP 20 20 ns ACT to READ/WRITE delay tRCD 20 20 ns ACT(one) to ACT(another) command period tRRD 15 15 ns Write recovery time tWR 15 15 ns Auto precharge write recovery time + precharge time tDAL 35 35 ns Mode register set command cycle time tMRD 15 15 ns Exit self refresh to command tXSNR 75 80 ns Refresh time (4,096 refresh cycles) tREF 64 64 ms |
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