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MT4LC4M4B1 Datasheet(PDF) 6 Page - Micron Technology |
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MT4LC4M4B1 Datasheet(HTML) 6 Page - Micron Technology |
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6 / 20 page  6 4 Meg x 4 FPM DRAM Micron Technology, Inc., reserves the right to change products or specifications without notice. D49_5V.p65 – Rev. 5/00 ©2000, Micron Technology, Inc. 4 MEG x 4 FPM DRAM AC ELECTRICAL CHARACTERISTICS (Notes: 5, 6, 7, 8, 9, 10, 11, 12) [Vcc (MIN) £ Vcc £ Vcc (MAX)] AC CHARACTERISTICS -5 -6 PARAMETER SYMBOL MIN MAX MIN MAX UNITS NOTES Access time from column address tAA 25 30 ns Column-address hold time (referenced to RAS#) tAR 38 45 ns Column-address setup time tASC 0 0 ns Row-address setup time tASR 0 0 ns Column address to WE# delay time tAWD 42 49 ns 18 Access time from CAS# tCAC 13 15 ns Column-address hold time tCAH 8 10 ns CAS# pulse width tCAS 8 10,000 10 10,000 ns CAS# LOW to “Don’t Care” during Self Refresh tCHD 15 15 ns CAS# hold time (CBR Refresh) tCHR 8 10 ns 4 CAS# to output in Low-Z tCLZ 0 0 ns 22 CAS# precharge time tCP 8 10 ns 13 Access time from CAS# precharge tCPA 28 35 ns CAS# to RAS# precharge time tCRP 5 5 ns CAS# hold time tCSH 38 45 ns CAS# setup time (CBR Refresh) tCSR 5 5 ns 4 CAS# to WE# delay time tCWD 28 35 ns 18 WRITE command to CAS# lead time tCWL 8 10 ns Data-in hold time tDH 8 10 ns 19 Data-in setup time tDS 0 0 ns 19 Output disable tOD 0 12 0 15 ns 22 Output enable tOE 12 15 ns 20 OE# hold time from WE# during tOEH 8 10 ns READ-MODIFY-WRITE cycle Output buffer turn-off delay tOFF 0 12 0 15 ns 17, 22 OE# setup prior to RAS# during HIDDEN REFRESH cycle tORD 0 0 ns FAST-PAGE-MODE READ or WRITE cycle time tPC 20 25 ns FAST-PAGE-MODE READ-WRITE cycle time tPRWC 47 56 ns Access time from RAS# tRAC 50 60 ns RAS# to column-address delay time tRAD 9 12 ns 15 Row-address hold time tRAH 9 10 ns RAS# pulse width tRAS 50 10,000 60 10,000 ns RAS# pulse width (FAST PAGE MODE) tRASP 50 125,000 60 125,000 ns RAS# pulse width during Self Refresh tRASS 100 100 µs Random READ or WRITE cycle time tRC 84 104 ns RAS# to CAS# delay time tRCD 11 14 ns 14 READ command hold time (referenced to CAS#) tRCH 0 0 ns 16 READ command setup time tRCS 0 0 ns Refresh period (2,048 cycles) tREF 32 32 ms Refresh period (4,096 cycles) tREF 64 64 ms |
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