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EM42BM1684RBA-75FE Datasheet(PDF) 8 Page - Eorex Corporation |
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EM42BM1684RBA-75FE Datasheet(HTML) 8 Page - Eorex Corporation |
8 / 19 page eorex Preliminary EM42AM1684RBA Jul. 2006 www.eorex.com 8/19 AC Operating Test Characteristics (Continued) (VDD=2.5V±0.2V, TA=0°C ~70°C) -6 -75 Symbol Parameter Min. Max. Min. Max. Units tRPST Read Postamble 0.4 0.6 0.4 0.6 tCK tRAS Active to Precharge command period 42 70k 45 70k ns tRC Active to Active command period 60 65 ns tRFC Auto Refresh Row Cycle Time 72 75 ns tRCD Active to Read or Write delay 18 20 ns tRP Precharge command period 18 20 ns tRRD Active bank A to B command period 12 15 ns tCCD Column address to column address delay 1 1 tCK tCDLR Last data in to Read command 2.5 tCK- tDQSS 2.5 tCK- tDQSS tCK tCDLW Last data in to Write command 0 0 tCK tDPL Last data in to Precharge command 2 2 tCK tXSNR Exit self Refresh to non-read command 75 75 ns tXSRD Exit self Refresh to read command 200 200 ns tREFI Average periodic refresh interval 15.6 15.6 us |
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