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UPD98409 数据表(PDF) 21 Page - NEC |
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UPD98409 数据表(HTML) 21 Page - NEC |
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21 / 36 page ![]() 21 µµµµPD98409 Target write Parameter Symbol Conditions MIN. TYP. MAX. Unit FRAME_B setup time tSFRAME 7ns FRAME_B hold time tHFRAME 2 Note 1 ns AD (Address) setup time tSADDR 7ns AD (Address) hold time tHADDR 2 Note 1 ns AD (Data) setup time tSDATA 7ns AD (Data) hold time tHDATA 2 Note 1 ns PCBE_B setup time tSPCBE 7ns PCBE_B hold time tHPCBE 2 Note 1 ns IRDY_B setup time tSIRDY 9 Note 2 ns IRDY_B hold time tHIRDY 2 Note 1 ns CLK ↑ → TRDY_B valid time tDTRDY 211 ns CLK ↑ → TRDY_B float time tDTRDYF 28 ns CLK ↑ → DEVSEL_B valid time tDDEVSEL 211 ns CLK ↑ → DEVSEL_B float time tDDEVSELF 28 ns PAR setup time tSPAR 7ns PAR hold time tHPAR 2 Note 1 ns CLK ↑ → PERR_B valid time tDPERR 211 ns CLK ↑ → PERR_B float time tDPERRF 28 ns Notes 1. Relaxed specification from PCI Local Bus Specification Revision 2.1 0 ns → 2 ns 2. Relaxed specification from PCI Local Bus Specification Revision 2.1 7 ns → 9 ns |
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