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WSE128K16-35H1IA Datasheet(PDF) 4 Page - White Electronic Designs Corporation |
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WSE128K16-35H1IA Datasheet(HTML) 4 Page - White Electronic Designs Corporation |
4 / 15 page WSE128K16-XXX 4 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs PRELIMINARY White Electronic Designs Corp. reserves the right to change products or specifications without notice. March 2005 Rev. 3 FIGURE 3 – AC TEST CIRCUIT AC TEST CONDITIONS Parameter Typ Unit Input Pulse Levels VIL = 0, VIH = 3.0 V Input Rise and Fall 5 ns Input and Output Reference Level 1.5 V Output Timing Reference Level 1.5 V NOTES: VZ is programmable from -2V to +7V. IOL & IOH programmable from 0 to 16mA. Tester Impedance Z0 = 75 Ω. VZ is typically the midpoint of VOH and VOL. IOL & IOH are adjusted to simulate a typical resistive load circuit. ATE tester includes jig capacitance. SRAM AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C Parameter Read Cycle Symbol -35 -45 -70 Units Min Max Min Max Min Max Read Cycle Time tRC 35 45 70 ns Address Access Time tAA 35 45 70 ns Output Hold from Address Change tOH 005 ns Chip Select Access Time tACS 35 45 70 ns Output Enable to Output Valid tOE 20 25 35 ns Chip Select to Output in Low Z tCLZ1 335 ns Output Enable to Output in Low Z tOLZ1 005 ns Chip Disable to Output in High Z tCHZ1 20 20 25 ns Output Disable to Output in High Z tOHZ1 20 20 25 ns 1. This parameter is guaranteed by design but not tested. SRAM AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C Parameter Write Cycle Symbol -35 -45 -70 Units Min Max Min Max Min Max Write Cycle Time tWC 35 45 70 ns Chip Select to End of Write tCW 25 30 60 ns Address Valid to End of Write tAW 25 30 60 ns Data Valid to End of Write tDW 20 25 30 ns Write Pulse Width tWP 25 30 50 ns Address Setup Time tAS 005 ns Address Hold Time tAH 005 ns Output Active from End of Write tOW1 445 ns Write Enable to Output in High Z tWHZ1 20 25 25 ns Data Hold Time tDH 000 ns 1. This parameter is guaranteed by design but not tested. I Current Source D.U.T. C = 50 pf eff I OL V ≈ 1.5V (Bipolar Supply) Z Current Source OH |
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