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EM422M1684LBA-75FE Datasheet(PDF) 8 Page - Eorex Corporation |
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EM422M1684LBA-75FE Datasheet(HTML) 8 Page - Eorex Corporation |
8 / 20 page eorex EM42BM1684LBA Jul. 2006 www.eorex.com AC Operating Test Characteristics (Continued) (VDD=1.8V±0.1V, TA=0°C ~70°C) -75 Units Symbol Parameter Min. Max. tRPST Read Postamble 0.4 0.6 tCK tRAS Active to Precharge command period 45 120k ns tRC Active to Active command period 75 - ns tRFC Auto Refresh Row Cycle Time 108 - ns tRCD Active to Read or Write delay 30 - ns tRP Precharge command period 22.5 - ns tRRD Active bank A to B command period 15 - ns tCCD Column address to column address delay 1 - tCK tHZP Pre-charge command to high-Z 3 - tCK tCDLW Last data in to Write command 1 - tCK tDPL Last data in to Precharge command 3 - tCK tSREX Exit self refresh to non-col. command 16 - tCK tWTR Internal Write to Read command delay 1 - tCK tCKE CKE minimum pulse width 2 - tCK tWPD Write to pre-charge delay(same bank) 3+BL/2 - tCK tRPD Read to pre-charge delay(same bank) BL/2 - tCK tWRD Write to Read command delay 2+BL/2 - tCK tBSTW Burst stop to write delay 3 - tCK tWRD Write recovery 2 - tCK tREFI Average periodic refresh interval - 7.8 us 8/20 |
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