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WSE128K16-73H1M Datasheet(PDF) 8 Page - White Electronic Designs Corporation |
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WSE128K16-73H1M Datasheet(HTML) 8 Page - White Electronic Designs Corporation |
8 / 15 page WSE128K16-XXX 8 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs PRELIMINARY White Electronic Designs Corp. reserves the right to change products or specifications without notice. March 2005 Rev. 3 FIGURE 9 – EEPROM READ WAVEFORMS EEPROM READ The WSE128K16-XXX EEPROM stores data at the memory location determined by the address pins. When ECS# and OE# are low and EWE# is high, this data is present on the outputs. When ECS# and OE# are high, the outputs are in a high impedance state. This two line control prevents bus contention. Note: OE# may be delayed up to tACS - tOE after the falling edge of ECS# without impact on tOE or by tACC - tOE after an address change without impact on tACC. EEPROM AC READ CHARACTERISTICS VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C Read Cycle Parameter Symbol -120 -150 -300 Unit Min Max Min Max Min Max Read Cycle Time tRC 120 150 300 ns Address Access Time tACC 120 150 300 ns Chip Select Access Time tACS 120 150 300 ns Output Hold from Add. Change, OE# or ECS# tOH 000 ns Output Enable to Output Valid tOE 050055085 ns Chip Select or OE# to High Z Output tDF 70 70 70 ns tOH ADDRESS ECS#1-2 OE# EEPROM DATA OUTPUT tDF tACC tRC tOE tACS OUTPUT VALID ADDRESS VALID HIGH Z |
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