Patent ID: 8156461

Claim:
A Simulation Program with Integrated Circuit Emphasis (SPICE) corner model generating method for generating a SPICE corner model of a metal-oxide-semiconductor field-effect transistor (MOSFET), the method comprising: preparing a table of a ratio X regarding a combination of two kinds of MOSFETs selected from N kinds of MOSFETs, the ratio X being a magnitude of a variation of a MOSFET in a case where directions of variations of the two kinds of MOSFETs are opposite directions to a magnitude of a variation of a MOSFET in a case where the directions of the variations of the two kinds of MOSFETs are the same direction, where N is an integer of 2 or greater; reading out, when a combination of two kinds of MOSFETs is designated among the N kinds of MOSFETs, a value of the ratio X corresponding to the designated combination from the table of the ratio X; and forming two kinds of corner models of opposite directional variations, the two kinds of corner models comprising a first corner model generated by applying the value of the ratio X to a fast-side corner of a first MOSFET of the two kinds of MOSFETs and to a slow-side corner of a second MOSFET of the two kinds of MOSFETs, and a second corner model generated by applying the value of the ratio X to a slow-side corner of the first MOSFET and to a fast-side corner of the second MOSFET.