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WS1M8-55CMA Datasheet(PDF) 3 Page - White Electronic Designs Corporation |
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WS1M8-55CMA 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 WS1M8-XXX July 2004 Rev. 5 White Electronic Designs Corp. reserves the right to change products or specifications without notice. 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. AC CHARACTERISTICS VCC = 5.0V, VSS = 0V, -55°C ≤ TA ≤ +125°C Parameter Read Cycle Symbol -17 -20 -25 -35 -45 -55 Units 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 Output Enable to Output Valid tOE2 9 1012252525 ns Chip Select to Output in Low Z tCLZ1 222444 ns Output Enable to Output in Low Z tOLZ2 000000 ns Chip Disable to Output in High Z tCHZ1 9 1012152020 ns Output Disable to Output in High Z tOHZ2 9 1012152020 ns 1. This parameter is guaranteed by design but not tested. 2. OE# is internally tied to the GND and not accessible on the WS1M8-XCXX. AC CHARACTERISTICS VCC = 5.0V, VSS = 0V, -55°C ≤ TA ≤ +125°C Parameter Write Cycle Symbol -17 -20 -25 -35 -45 -55 Units 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 1. This parameter is guaranteed by design but not tested. |
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