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EM421M3284LBA-7FE Datasheet(PDF) 7 Page - Eorex Corporation |
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EM421M3284LBA-7FE Datasheet(HTML) 7 Page - Eorex Corporation |
7 / 20 page eorex EM42AM3284LBA Jul. 2006 www.eorex.com AC Operating Test Conditions (VDD=1.8V ± 0.1V, TA=0°C ~70°C) Item Conditions Output Reference Level 0.9V/0.9V Output Load See diagram as below Input Signal Level 1.6V/0.2V Transition Time of Input Signals 0.5ns Input Reference Level 0.9V AC Operating Test Characteristics (VDD=1.8V±0.1V, TA=0°C ~70°C) -7.5 Symbol Parameter Min. Max. Units tDQCK DQ output access from CLK,/CLK 2 6 ns tDQSCK DQS output access from CLK,/CLK 2 6 ns tCL,tCH CL low/high level width 0.45 0.55 tCK tCK Clock Cycle Time 7.5 ns tDH,tDS DQ and DM hold/setup time 0.8 ns tDIPW DQ and DM input pulse width for each input 1.75 ns tHZ,tLZ Data out high/low impedance time from CLK,/CLK 1 6 ns tDQSQ DQS-DQ skew for associated DQ signal 0.6 ns tDQSS Write command to first latching DQS transition 0.75 1.25 tCK tDSL,tDSH DQS input valid window 0.2 tCK tMRD Mode Register Set command cycle time 2 tCK tWPRES Write Preamble setup time 0 ns tWPST Write Preamble 0.4 0.6 tCK tIH,tIS Address/control input hold/setup time 1.3 ns tRPRE Read Preamble 0.9 1.1 tCK 7/20 |
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