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Codiode/Problems/Sequential Logic

T Flip-Flop: Reset-Then-Toggle Interaction at Adjacent Edges

HardLogic CircuitTiming Diagram

A positive-edge-triggered T flip-flop with a synchronous active-high reset clears its output to 0 if CLR is HIGH, or toggles its output if CLR is LOW and T is HIGH, at every LOW-to-HIGH transition of CLK. Four signals are shown: CLK (clock, period 2), CLR (reset input), T (toggle input), and Q (output, initially 0). Trace Q across all 10 time steps.

Constraints

  • Synchronous reset takes strict priority over the toggle input at the clock edge.
  • Input signal changes between clock edges do not alter the stored state.

Topics

flip-floptiming-diagramstate-elementssynchronous-reset

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