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WS128K32N-85G4TCA Datasheet(PDF) 4 Page - White Electronic Designs Corporation |
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WS128K32N-85G4TCA Datasheet(HTML) 4 Page - White Electronic Designs Corporation |
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4 / 9 page  4 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WS128K32-XXX June 2004 Rev. 4 I Current Source D.U.T. C = 50 pf eff I OL V 1.5V (Bipolar Supply) Z Current Source OH AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C Parameter Write Cycle Symbol -70 -85 -100 -120 Units Min Max Min Max Min Max Min Max Write Cycle Time tWC 70 85 100 120 ns Chip Select to End of Write tCW 60 75 80 100 ns Address Valid to End of Write tAW 60 75 80 100 ns Data Valid to End of Write tDW 30 35 40 50 ns Write Pulse Width tWP 50 55 70 80 ns Address Setup Time tAS 5555 ns Address Hold Time tAH 5555 ns Output Active from End of Write tOW1 5555 ns Write Enable to Output in High Z tWHZ1 25 25 35 35 ns Data Hold Time tDH 0000 ns Parameter Read Cycle Symbol -70 -85 -100 -120 Units Min Max Min Max Min Max Min Max Read Cycle Time tRC 70 85 100 120 ns Address Access Time tAA 70 85 100 120 ns Output Hold from Address Change tOH 3333 ns Chip Select Access Time tACS 70 85 100 120 ns Output Enable to Output Valid tOE 35 45 50 60 ns Chip Select to Output in Low Z tCLZ1 3333 ns Output Enable to Output in Low Z tOLZ1 0000 ns Chip Disable to Output in High Z tCHZ1 25 25 35 35 ns Output Disable to Output in High Z tOHZ1 25 25 35 35 ns 1. This parameter is guaranteed by design but not tested. AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C FIGURE. 4 – AC TEST CIRCUIT Notes: VZ is programmable from -2V to +7V. IOL & IOH programmable from 0 to 16mA. Tester Impedance Z0 = 75 ý. 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. 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 |
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