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WS1M8V-25CCA Datasheet(PDF) 3 Page - White Electronic Designs Corporation |
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WS1M8V-25CCA Datasheet(HTML) 3 Page - White Electronic Designs Corporation |
3 / 5 page WS1M8V-XCX 3 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs October, 2002 Rev. 2 White Electronic Designs Corp. reserves the right to change products or specifications without notice. ADVANCED* AC CHARACTERISTICS VCC = 3.3V, GND = 0V, -55°C ≤ TA ≤ +125°C) Parameter Symbol -17 -20 -25 -35 -45 -55 Units Read Cycle Min Max Min Max Min Max Min Max Min Max Min Max Read Cycle Time tRC 17 20 25 35 45 55 ns Address Access Time tAA 17 20 25 35 45 55 ns Output Hold from Address Change tOH 000000 ns Chip Select Access Time tACS 17 20 25 35 45 55 ns Chip Select to Output in Low Z tCLZ1 222444 ns Chip Disable to Output in High Z tCHZ1 9 1012152020 ns NOTES: 1. This parameter is guaranteed by design but not tested. 2. OE# is internally tied to GND. AC CHARACTERISTICS VCC = 3.3V, GND = 0V, -55°C ≤ TA ≤ +125°C) Parameter Symbol -17 -20 -25 -35 -45 -55 Units Write Cycle Min Max Min Max Min Max Min Max Min Max Min Max Write Cycle Time tWC 17 20 25 35 45 55 ns Chip Select to End of Write tCW 14 14 15 25 35 50 ns Address Valid to End of Write tAW 14 14 15 25 35 50 ns Data Valid to End of Write tDW 9 1010202525 ns Write Pulse Width tWP 14 14 15 25 35 40 ns Address Setup Time tAS 000000 ns Address Hold Time tAH 000055 ns Output Active from End of Write tOW1 234455 ns Write Enable to Output in High Z tWHZ1 9 9 10 15 15 25 ns Data Hold Time tDH 000000 ns NOTES: 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 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. |
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