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AM79C987 датащи(PDF) 22 Page - Advanced Micro Devices |
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AM79C987 датащи(HTML) 22 Page - Advanced Micro Devices |
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22 / 30 page ![]() AMD P R E L I M I N A R Y 22 Am79C987 SWITCHING CHARACTERISTICS Clock and Reset Timing Symbol Description Test Condition Min Max Unit tCK Clock Period 49.995 50.005 ns tCKH Clock High 20 30 ns tCKL Clock Low 20 30 ns tCKR Clock Rise Time 10 ns tCKF Clock Fall Time 10 ns tRST Reset Pulse Width (Note 1) 4 us tRSTS Reset Input Setup Time with Respect to CK (Note 1) 15 ns tRSTH Reset Input Hold Time with Respect to CK (Note 1) 0 ns Expansion Port Symbol Description Test Condition Min Max Unit tDJSET DAT/JAM Setup Time 10 ns tDJHOLD DAT/JAM Hold Time 9 ns tCASET COL/ACK Setup Time 5 ns tCAHLD COL/ACK Hold Time 9 ns Management Port Symbol Description Test Condition Min Max Unit tSCKD SCLK Clock Delay with Respect to CK 9 45 ns tSCKR SCLK Rise Time with Respect to CK CL = 50 pF 10 ns tSCKF SCLK Fall Time with Respect to CK CL = 50 pF 10 ns tSOS SO Input Setup Time with 10 ns Respect to CK Rising Edge tSOH SO Input Hold Time with 9 ns Respect to CK Rising Edge tSID SI Output Delay with CL = 50 pF 9 45 ns Respect to CK Rising Edge Port Activity Monitor Symbol Description Test Condition Min Max Unit tCRSTS CRS Setup Time with 10 ns Respect to CK Rising Edge tCRSTH CRS Hold Time with Respect 5 ns to CK Rising Edge Note: 1. See IMR+ data sheet for reset. |
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