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EM42AM1684RTA-75F Datasheet(PDF) 8 Page - Eorex Corporation |
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EM42AM1684RTA-75F Datasheet(HTML) 8 Page - Eorex Corporation |
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8 / 19 page  eorex EM42AM1684RTA Jul. 2006 www.eorex.com 8/19 AC Operating Test Characteristics (Continued) (VDD=2.5V±0.2V, TA=0°C ~70°C) -5 -6 -75 Symbol Parameter Min. Max. Min. Max. Min. Max. Units tRPST Read Postamble 0.4 0.6 0.4 0.6 0.4 0.6 tCK tRAS Active to Precharge command period 40 70k 42 70k 45 70k ns tRC Active to Active command period 55 60 65 ns tRFC Auto Refresh Row Cycle Time 70 72 75 ns tRCD Active to Read or Write delay 15 18 20 ns tRP Precharge command period 15 18 20 ns tRRD Active bank A to B command period 10 12 15 ns tCCD Column address to column address delay 1 1 1 tCK tCDLR Last data in to Read command 2.5 tCK- tDQSS 2.5 tCK- tDQSS 2.5 tCK- tDQSS tCK tCDLW Last data in to Write command 0 0 0 tCK tDPL Last data in to Precharge command 2 2 2 tCK tXSNR Exit self Refresh to non-read command 75 75 75 ns tXSRD Exit self Refresh to read command 200 200 200 ns tREFI Average periodic refresh interval 15.6 15.6 15.6 us |
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