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WMS512K8L-15DEQ Datasheet(PDF) 3 Page - White Electronic Designs Corporation |
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WMS512K8L-15DEQ Datasheet(HTML) 3 Page - White Electronic Designs Corporation |
3 / 10 page 3 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WMS512K8-XXX October 2004 Rev. 10 White Electronic Designs Corp. reserves the right to change products or specifications without notice. AC Characteristics (VCC = 5.0V, GND = 0V, -55°C ≤ TA < 125°C) Parameter Symbol -15 -17 -20 -25 -35 -45 -55 Unit Min Max Min Max Min Max Min Max Min Max Min Max Min Max Read Cycle Time tRC 15 17 20 25 35 45 55 ns Address Access Time tAA 15 17 20 25 35 45 55 ns Output Hold from Address Change tOH 00 0 0 0 0 0 ns Chip Select Access Time tACS 15 17 20 25 35 45 55 ns Output Enable to Output Valid tOE 8 9 10 12 25 25 25 ns Chip Select to Output in Low Z tCLZ1 22 2 2 4 4 4 ns Output Enable to Output in Low Z tOLZ1 00 0 0 0 0 0 ns Chip Disable to Output in High Z tCHZ1 8 9 10 12 15 20 20 ns Output Disable to Output in High Z tOHZ1 8 9 10 12 15 20 20 ns AC Characteristics (VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ 125°C) Parameter Symbol -15 -17 -20 -25 -35 -45 -55 Unit Min Max Min Max Min Max Min Max Min Max Min Max Min Max Write Cycle Time tWC 15 17 20 25 35 45 55 ns Chip Select to End of Write tCW 13 14 14 15 25 35 50 ns Address Valid to End of Write tAW 13 14 14 15 25 35 50 ns Data Valid to End of Write tDW 8 9 10 10 20 25 25 ns Write Pulse Width tWP 13 14 14 15 25 35 40 ns Address Setup Time tAS 22 2 2 2 2 2 ns Address Hold Time tAH 00 0 0 0 5 5 ns Output Active from End of Write tOW1 22 3 4 4 5 5 ns Write Enable to Output in High Z tWHZ1 89 9 10 15 20 25 ns Data Hold Time tDH 00 0 0 0 0 0 ns 1. This parameter is guaranteed by design but not tested. AC TEST CIRCUIT AC TEST CONDITIONS Current Source Current Source IOL IOH Ceff = 50 pF D.U.T. VZ ≈ 1.5V (Bipolar Supply) 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. |
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