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HMD4M72D18EG-5 Datasheet(PDF) 6 Page - Hanbit Electronics Co.,Ltd |
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HMD4M72D18EG-5 Datasheet(HTML) 6 Page - Hanbit Electronics Co.,Ltd |
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6 / 16 page  HANBit HMD4M72D18EG URL:www.hbe.co.kr - 6 - HANBit Electronics Co.,Ltd. REV.1.0 (August.2002) /CAS to /RAS precharge time tCRP 5 5 ns Row address set-up time tASR 0 0 ns Row address hold time tRAH 10 10 ns Column address set-up time tASC 0 0 ns Column address hold time tCAH 8 10 ns Column address hold referenced to /RAS tRRH 0 0 ns Column Address to /RAS lead time tRAL 25 30 ns Read command set-up time tRCS 0 0 ns Read command hold referenced to /CAS tRCH 0 0 ns Read command hold referenced to /RAS tRRH 0 0 ns Write command hold time tWCH 10 10 ns Write command pulse width tWP 10 10 ns Write command to /RAS lead time tRWL 13 15 ns Write command to /CAS lead time tCWL 8 10 ns Data-in set-up time tDS 0 0 ns Data-in hold time tDH 8 10 ns Refresh period tREF 32 32 ms Write command set-up time tWCS 0 0 ns /CAS to /W delay time tCWD 30 34 ns /RAS to /W delay time tRWD 67 79 ns Column address to /W delay time tAWD 42 49 ns /CAS precharge to /W delay time tCPWD 47 54 ns /CAS setup time (/CAS-before /RAS refresh) tCSR 5 5 ns /CAS hold time(/CAS-before-/RAS refresh) tCHR 10 10 ns /RAS to /CAS precharge time tRPC 5 5 ns Access time from /CAS precharge tCPA 28 35 ns Hyper page mode cycle time tHPC 20 25 ns Hyper page mode read-modify write cycle time tHPRWC 47 56 ns /CAS precharge time(Hyper page cycle) tCP 8 10 ns /RAS pulse width (Hyper page cycle) tRASP 50 200K 60 200K ns /RAS hold time from /CAS precharge tRHCP 30 35 ns /OE access time tOEA 13 15 ns /OE to date delay tOED 13 15 ns Output buffer tune off delay time from /OE tOEZ 3 13 3 15 ns /OE command hold time tOEH 13 13 ns |
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