Patent ID: 8302055
Filing Date: 2012-10-30
Classification: G06F

Abstract:
1. A semiconductor device design support apparatus, comprising: a plurality of units that sets an initial segment in a layout of a semiconductor device, determining a ΔVDD error rate, obtains dispersion of electrical current values, which is with respect to said ΔVDD error rate, inside said segment from an electrical current waveform of an instance included in said initial segment, wherein said segment is a group in which instances are grouped, repeats dividing of said segment without changing width of lines that define said segment and computing of a dispersion value of said electrical current which is with respect to said ΔVDD error rate, the dispersion value being desired to be less than a prescribed value which is decided based on said ΔVDD error rate, if dispersion of said electrical current values is equal to or greater than the prescribed value, creates a macro-model for said divided segments at a stage at which dispersion of electrical current of all segments is less than said prescribed value, and creates a substrate noise analysis netlist from said macro-model and a substrate netlist.