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UPD485505G-25 Datasheet(PDF) 8 Page - NEC |
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UPD485505G-25 Datasheet(HTML) 8 Page - NEC |
8 / 20 page µPD485505 8 Data Sheet M10059EJ7V0DS00 AC Characteristics (Recommended Operating Conditions unless otherwise noted)Notes 1, 2, 3 Parameter Symbol µPD485505-25 µPD485505-35 Unit Notes MIN. MAX. MIN. MAX. Write clock cycle time tWCK 25 35 ns Write clock pulse width tWCW 11 12 ns Write clock precharge time tWCP 11 12 ns Read clock cycle time tRCK 25 35 ns Read clock pulse width tRCW 11 12 ns Read clock precharge time tRCP 11 12 ns Access time tAC 18 25 ns Write data-read delay time tWAR 470 470 ns Output hold time tOH 55 ns Output low-impedance time tLZ 5 18 5 25 ns 4 Output high-impedance time tHZ 5 18 5 25 ns 4 Input data setup time tDS 710 ns Input data hold time tDH 33 ns RSTW/RSTR Setup time tRS 710 ns 5 RSTW/RSTR Hold time tRH 33 ns 5 RSTW/RSTR Deselected time (1) tRN1 33 ns 6 RSTW/RSTR Deselected time (2) tRN2 710 ns 6 WE Setup time tWES 710 ns 7 WE Hold time tWEH 33 ns 7 WE Deselected time (1) tWEN1 33 ns 8 WE Deselected time (2) tWEN2 710 ns 8 RE Setup time tRES 710 ns 9 RE Hold time tREH 33 ns 9 RE Deselected time (1) tREN1 3 3 ns 10 RE Deselected time (2) tREN2 710 ns 10 WE Disable time tWEW 00 ms RE Disable time tREW 00 ms Write reset time tRSTW 00 ms Read reset time tRSTR 00 ms Transition time tT 3 35 3 35 ns |
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