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UPD77112GC Datasheet(PDF) 45 Page - NEC |
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UPD77112GC Datasheet(HTML) 45 Page - NEC |
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45 / 80 page  Data Sheet U12801EJ4V0DS00 45 µµµµPD77110, 77111, 77112 µPD77110 External Data Memory Access Timing requirements Parameter Symbol Condition MIN. TYP. MAX. Unit Read data setup time tsuDDRD 18 ns Read data hold time thDDRD 0ns Switching characteristics Parameter Symbol Condition MIN. TYP. MAX. Unit Address cycle time trcDA tcC + (tcC × tcDW)Note ns Address output hold time thDA 0ns MRD output delay time tdDR 5ns Write data output valid time tvDDWD 5ns Write data output hold time thDDWD 0ns MWR output delay time tdDW 0 0.5 tcC ns MWR output hold time thDA 0ns MWR low-level width twDWL tcC × tcDW − 3 ns MWR high-level width twDWH 0.5 tcC − 3ns Note tcDW: Number of data wait cycles |
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