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AM79C90PC 数据表(PDF) 39 Page - Advanced Micro Devices |
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AM79C90PC 数据表(HTML) 39 Page - Advanced Micro Devices |
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39 / 62 page ![]() P R E L I M I N A R Y AMD 39 Am79C90 SWITCHING CHARACTERISTICS (continued) Parameter Test No. Symbol Parameter Description Conditions Min Typ Max Unit 31 tRDAH Data Hold Time After the Rising Edge 0 ns of DAS (Bus Master Read) 32 tDDAS Data Setup Time to the Falling Edge 10 ns of DAS (Bus Master Write) 33 tWDS Data Setup Time to the Rising Edge 200 ns of DAS (Bus Master Write) 34 tWDH Data Hold Time After the Rising Edge 35 ns of DAS (Bus Master Write) 35 tSD01 Data Driver Delay After the Falling (CSR0, CSR3, RAP) 4tTCT ns Edge of DAS (Bus Slave Read) (Note 6) 36 tSD02 Data Driver Delay After the Falling (CSR1, 2) 12tTCT ns Edge of DAS (Bus Slave Read) (Note 6) 37 tSRDH Data Hold Time After the Rising 0 55 ns Edge of DAS (Bus Slave Read) 38 tSWDH Data Hold Time After the Rising 0 ns Edge of DAS (Bus Slave Write) 39 tSWDS Data Setup Time to the Falling Edge 0 ns of DAS (Bus Slave Write) 40 tALEW ALE Width HIGH 120 ns 41 tDALE Delay from Rising Edge of DAS to the 70 ns Rising Edge of ALE 42 tDSW DAS Width LOW 200 ns 43 tADAS Delay from the Falling Edge of ALE 80 130 ns to the Falling Edge of DAS 44 tRIDF Delay from the Rising of DALO to the 15 ns Falling Edge of DAS (Bus Master Read) 45 tRDYS Delay from the Falling Edge of READY 65 250 ns to the Rising Edge of DAS 46 tROIF Delay from the Rising Edge of DALO to 15 ns the Falling Edge of DALI (Bus Master Read) 47 tRIS DALI Setup Time to the Rising Edge of 135 ns DAS (Bus Master) 48 tRIH DALI Hold Time After the Rising Edge of 0 ns DAS (Bus Master Read) 49 tRIOF Delay from the Rising Edge of DALI to the 55 ns Falling Edge of DALO (Bus Master Read) 50 tOS DALO and READ Setup Time to the Falling 110 ns Edge of ALE (Bus Master Write and Read) 51 tROH DALO Hold Time After the Falling Edge of 35 ns ALE (Bus Master Read) 52 tWDSI Delay from the Rising Edge of DAS to the 35 ns Rising Edge of DALO (Bus Master Write) 53 tCSH CS Hold Time After the Rising Edge of DAS 0 ns (Bus Slave) 54 tCSS CS Setup Time to the Falling Edge of DAS 0 ns (Bus Slave) |
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