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AM186ED-20KC/W 数据表(PDF) 77 Page - Advanced Micro Devices |
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AM186ED-20KC/W 数据表(HTML) 77 Page - Advanced Micro Devices |
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77 / 88 page  Am186ED/EDLV Microcontrollers 77 PRELI M INARY D RA F T SWITCHING CHARACTERISTICS over COMMERCIAL and INDUSTRIAL operating ranges Software Halt Cycle (20 MHz and 25 MHz) Notes: All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL=0.45 V and VIH =2.4 V, except at X1 where VIH =VCC – 0.5 V. a Testing is performed with equal loading on referenced pins. b This parameter applies to the DEN signal. SWITCHING CHARACTERISTICS over COMMERCIAL operating ranges Software Halt Cycle (33 MHz and 40 MHz) Notes: All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions are with CL =50 pF. For switching tests, VIL=0.45 V and VIH =2.4 V, except at X1 where VIH =VCC – 0.5 V. a Testing is performed with equal loading on referenced pins. b This parameter applies to the DEN signal. Parameter Preliminary Unit 20 MHz 25 MHz No. Symbol Description Min Max Min Max General Timing Responses 3tCHSV Status Active Delay 0 25 0 20 ns 4tCLSH Status Inactive Delay 0 25 0 20 ns 5tCLAV AD Address Invalid Delay and BHE 0 25 0 20 ns 9tCHLH ALE Active Delay 25 20 ns 10 tLHLL ALE Width tCLCL–10=40 tCLCL–10=30 ns 11 tCHLL ALE Inactive Delay 25 20 ns 19 tDXDL DEN Inactive to DT/R Low(a) 00 ns 22 tCHCTV Control Active Delay 2(b) 0250 20 ns 68 tCHAV CLKOUTA High to A Address Invalid 0 25 0 20 ns Parameter Preliminary Unit 33 MHz 40 MHz No. Symbol Description Min Max Min Max General Timing Responses 3tCHSV Status Active Delay 0 15 0 12 ns 4tCLSH Status Inactive Delay 0 15 0 12 ns 5tCLAV AD Address Invalid Delay and BHE 0 15 0 12 ns 9tCHLH ALE Active Delay 15 12 ns 10 tLHLL ALE Width tCLCL–10=20 tCLCL–5=20 ns 11 tCHLL ALE Inactive Delay 15 12 ns 19 tDXDL DEN Inactive to DT/R Low(a) 00 ns 22 tCHCTV Control Active Delay 2(b) 015012 ns 68 tCHAV CLKOUTA High to A Address Invalid 0 15 0 10 ns |
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