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AS62V256A Datasheet(PDF) 5 Page - Alliance Semiconductor Corporation |
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AS62V256A Datasheet(HTML) 5 Page - Alliance Semiconductor Corporation |
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5 / 10 page  AS62V256A -70SIN Switching Characteristics Read Cycle Symbol 70 Unit Alt. IEC Min. Max. Read Cycle Time tRC tcR 70 ns Address Access Time to Data Valid tΑΑ ta(Α) 70 ns Chip Enable Access Time to Data Valid tΑCΕ ta(Ε) 70 ns G LOW to Data Valid tOΕ ta(G) 25 ns Ε HIGH to Output in High-Z tΗΖCΕ tdis(Ε) 15 ns G HIGH to Output in High-Z tΗΖΟΕ tdis(G) 15 ns Ε LOW to Output in Low-Z tLΖCΕ ten(Ε) 3 ns G LOW to Output in Low-Z tLΖΟΕ ten(G) 0 ns Output Hold Time from Address Change tΟΗ tv(Α) 3 ns Ε LOW to Power-Up Time tPU 0 ns Ε HIGH to Power-Down Time tPD 70 ns Switching Characteristics Write Cycle Symbol 70 Unit Alt. IEC Min. Max. Write Cycle Time tWC tcW 70 ns Write Pulse Width tWP tw(W) 35 ns Write Setup Time tWP tsu(W) 35 ns Address Setup Time tΑS tsυ(Α) 0 ns Address Valid to End of Write tΑW tsu(Α−WΗ) 40 ns Chip Enable Setup Time tCW tsυ(Ε) 40 ns Pulse Width Chip Enable to End of Write tCW tw(Ε) 40 ns Data Setup Time tDS tsu(D) 25 ns Data Hold Time tDH th(D) 0 ns Address Hold from End of Write tAH th(Α) 0 ns W LOW to Output in High-Z tΗΖWΕ tdis(W) 20 ns G HIGH to Output in High-Z tΗΖΟΕ tdis(G) 15 ns W HIGH to Output in Low-Z tLΖWΕ ten(W) 0 ns G LOW to Output in Low-Z tLΖΟΕ ten(G) 0 ns Sept 2012 5 |
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