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MT18LD472A Datasheet(PDF) 11 Page - Micron Technology |
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MT18LD472A Datasheet(HTML) 11 Page - Micron Technology |
11 / 30 page 2, 4 Meg x 72 Nonbuffered DRAM DIMMs Micron Technology, Inc., reserves the right to change products or specifications without notice. DM60.p65 – Rev. 6/98 ©1998, Micron Technology, Inc. 11 2, 4 MEG x 72 NONBUFFERED DRAM DIMMs OBSOLETE FAST PAGE MODE AC ELECTRICAL CHARACTERISTICS (Notes: 5, 6, 7, 8, 9, 12, 29) (VDD = +3.3V ±0.3V) AC CHARACTERISTICS - FAST PAGE MODE OPTION -6 PARAMETER SYMBOL MIN MAX UNITS NOTES FAST-PAGE-MODE READ-WRITE cycle time tPRWC 85 ns Access time from RAS# tRAC 60 ns 13 RAS# to column-address delay time tRAD 15 ns 17 Row-address hold time tRAH 10 ns RAS# pulse width tRAS 60 10,000 ns RAS# pulse width (FAST PAGE MODE) tRASP 60 125,000 ns Random READ or WRITE cycle time tRC 110 ns RAS# to CAS# delay time tRCD 20 ns 16 READ command hold time (referenced to CAS#) tRCH 0 ns 18 READ command setup time tRCS 0 ns Refresh period (2,048 cycles) tREF 32 ms RAS# precharge time tRP 40 ns RAS# to CAS# precharge time tRPC 0 ns READ command hold time (referenced to RAS#) tRRH 0 ns 18 RAS# hold time tRSH 15 ns READ-WRITE cycle time tRWC 155 ns RAS# to WE# delay time tRWD 85 ns 23 WRITE command to RAS# lead time tRWL 15 ns Transition time (rise or fall) tT2 50 ns WRITE command hold time tWCH 10 ns WRITE command hold time (referenced to RAS#) tWCR 45 ns WE# command setup time tWCS 0 ns 23 WRITE command pulse width tWP 10 ns WE# hold time (CBR Refresh) tWRH 10 ns WE# setup time (CBR Refresh) tWRP 10 ns |
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