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Codiode/Problems/Sequential Logic

Synchronous Reset Priority

MediumLogic CircuitTiming Diagram

A positive-edge-triggered D flip-flop with a synchronous active-low reset evaluates its inputs at every LOW-to-HIGH transition of CLK. Four signals are shown: CLK (clock, period 2), RST_n (synchronous active-low reset), D (data input), and Q (output, initially 0). Trace Q across all 12 time steps.

Constraints

  • The output Q only changes state in response to a LOW-to-HIGH transition on CLK.
  • Synchronous reset RST_n has strict priority over data D.
  • If RST_n is 0 at the rising clock edge, Q is forced to 0 regardless of the value of D.

Topics

Latches and Flip-FlopsSynchronous ResetLogic Analyzer

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