Latches and Flip Flops

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Flip Flops @ P. Klimo JK Flip Flop: Figure 16: Implementation of RS latch using Pulse Transition Detector Figure 17: Symbol for a Positive (Rising) Edge JK Flip-Flop Description of JK Flip-Flop Behaviour. J K Q* Mode 0 0 Q hold 0 1 0 reset 1 0 1 set 1 1 Q’ toggle Truth Table for JK Flip Flop 10
Flip Flops @ P. Klimo Next State Diagram for JK Flip Flop. Present State Inputs Next State Q J K Q* 0 0 0 0 1 0 0 1 0 1 0 1 1 1 0 1 0 0 1 0 1 0 1 0 0 1 1 1 1 1 1 0 Next State Table for JK Flip Flop. Characteristic equation of JK Flip Flop: Q* = J.Q’ + K’.Q Homework: derive the above equation from the Next State Table. Transition Req. inputs Q -> Q* J K 0 0 0 X 0 1 1 X 1 1 X 0 1 0 X 1 Excitation map for JK flip flop 11
Page 1 and 2: Flip Flops @ P. Klimo Latches and F
Page 3 and 4: Flip Flops @ P. Klimo Step 4: Solve
Page 5 and 6: Flip Flops @ P. Klimo Excitation ma
Page 7 and 8: Flip Flops @ P. Klimo Example: The
Page 9: Flip Flops @ P. Klimo Figure 12: Im
Page 13: Flip Flops @ P. Klimo Timing Defini

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