Timing analysis method and timing analysis apparatus

Abstract

A signal timing analysis method for analyzing timing of a signal propagated along a path including instances. The method includes performing a delay calculation, generating files storing delay information, input slew rate, and output capacitance, performing static timing analysis (STA) based on the delay information, and generating an analysis result. The method includes calculating a delay distribution based on the input slew rate and output capacitance, a probability distribution of a delay time, a probability distribution of a transition time, and a correlation between the delay time and the transition time. The calculation of the delay distribution includes inputting an input slew rate distribution taking into consideration a correlation between output delay and transition distributions for the instance in a preceding stage. The method includes performing STA on the signal propagated along the path based on the analysis result of the STA and delay distribution.