Patent ID: 7856608

Claim:
A model generation method processed in a current source noise model creating part of a power supply noise analysis apparatus, for generating a current source noise model applied in creating a semiconductor device model used for power supply noise analysis, comprising: using the power supply noise analysis apparatus for: calculating for each of a plurality of selected elements, which are arranged in a semiconductor device to be analyzed and change state leading to noise generation, a noise value representing a noise amount based on a current source noise waveform by determining the current source noise waveform calculated in accordance with a current flowing from a power supply when the state of the element changes; acquiring timing when the change of state of the plurality of elements causing the current source noise occurs by a static timing analysis in a timing window having a predetermined time width; calculating noise by unit time by dividing an analysis time in which a transient analysis is performed into unit times; determining the total noise in each unit time by adding for each divided unit time the noise value calculated for all elements whose timing window is present in the unit time; and generating the current source noise model based on the determination of the total noise.