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AM186EM-33VC/W Scheda tecnica(PDF) 81 Page - Advanced Micro Devices |
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AM186EM-33VC/W Scheda tecnica(HTML) 81 Page - Advanced Micro Devices |
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81 / 98 page ![]() Am186/188EM and Am186/188EMLV Microcontrollers 81 P R E L IMINAR Y SWITCHING CHARACTERISTICS over COMMERCIAL operating range 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 Equal loading on referenced pins. b This parameter applies to the DEN signal. Preliminary Parameter 20 MHz 25 MHz No. Symbol Description Min Max Min Max Unit General Timing Responses 3 tCHSV Status Active Delay 0 25 0 20 ns 4 tCLSH Status Inactive Delay 0 25 0 20 ns 5 tCLAV AD Address Invalid Delay and BHE 0 25 0 20 ns 9 tCHLH 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) 0 0 ns 22 tCHCTV Control Active Delay 2(b) 0 25 0 20 ns 68 tCHAV CLKOUTA High to A Address Invalid 0 25 0 20 ns |
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