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WS128K32N-55G2TCE Datasheet(PDF) 3 Page - White Electronic Designs Corporation |
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WS128K32N-55G2TCE Datasheet(HTML) 3 Page - White Electronic Designs Corporation |
3 / 6 page 3 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WS128K32-XG2TXE December 2000 Rev. 0 ADVANCED 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 -35 -45 -55 Units Min Max Min Max Min Max Write Cycle Time tWC 35 45 55 ns Chip Select to End of Write tCW 25 35 45 ns Address Valid to End of Write tAW 25 35 45 ns Data Valid to End of Write tDW 20 25 25 ns Write Pulse Width tWP 25 35 45 ns Address Setup Time tAS 000 ns Address Hold Time tAH 000 ns Output Active from End of Write tOW1 000 ns Write Enable to Output in High Z tWHZ1 10 15 20 ns Data Hold Time tDH 000 ns 1. This parameter is guaranteed by design but not tested. AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C Parameter Read Cycle Symbol -35 -45 -55 Units Min Max Min Max Min Max Read Cycle Time tRC 35 45 55 ns Address Access Time tAA 35 45 55 ns Output Hold from Address Change tOH 333 ns Chip Select Access Time tACS 35 45 55 ns Output Enable to Output Valid tOE 15 20 30 ns Chip Select to Output in Low Z tCLZ1 333 ns Output Enable to Output in Low Z tOLZ1 000 ns Chip Disable to Output in High Z tCHZ1 20 20 20 ns Output Disable to Output in High Z tOHZ1 12 15 20 ns 1. This parameter is guaranteed by design but not tested. FIGURE 2 – AC TEST CIRCUIT Notes: VZ is programmable from -2V to +7V. IOL & IOH programmable from 0 to 16mA. Tester Impedance Z0 = 75Ω. 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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