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UPD43257BCZ-85LL Datasheet(PDF) 10 Page - NEC |
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UPD43257BCZ-85LL Datasheet(HTML) 10 Page - NEC |
10 / 20 page Data Sheet M10693EJ7V0DS00 10 µµµµPD43257B Write Cycle Parameter Symbol µPD43257B-70 µPD43257B-85 Unit Condition MIN. MAX. MIN. MAX. Write cycle time tWC 70 85 ns /CE1 to end of write tCW1 50 70 ns CE2 to end of write tCW2 50 70 ns Address valid to end of write tAW 50 70 ns Address setup time tAS 00 ns Write pulse width tWP 55 65 ns Write recovery time tWR 00 ns Data valid to end of write tDW 30 35 ns Data hold time tDH 00 ns /WE to output in high impedance tWHZ 30 30 ns Note Output active from end of write tOW 10 10 ns Note See the output load shown in Figure 2. Remark These AC characteristics are in common regardless of package types and L, LL versions. |
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