METHOD OF TRANSFORMING FLIPFLOPS

摘要

A method for transforming flip-flop is provided to satisfy timing condition by reducing a leakage current of a cycle circuit. A method for transforming flip-flop comprises the following steps: a step for replacing a plurality of original flip-flops with an asymmetry flip-flop showing the least leakage characteristic based on a stochastic leakage from among a first through a fourth asymmetry flip-flops; a step for producing a path graph to find the asymmetry flip-flop violated to a timing condition in a sequential circuit including replaced asymmetry flip-flops; a step for performing a timing analysis about a generated path graph(S620); a step for judging a path delay violating the timing condition based on a analyzed timing; a step for discovering a candidate asymmetry flip-flop inducing violation of the timing condition on the path delay; and a step for replacing the candidate asymmetry flip-flop with a flip-flop having a better timing characteristics.