METHOD FOR DESIGNING INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To optimize performance of an integrated circuit more than in the prior art as a method for designing the integrated circuit. SOLUTION: After an initial layout (S20), an integrated circuit evaluation circuit step S30, a change cell selection step S40 and a cell performance change step S50 are repeatedly executed. In the change cell selection step S40, a cell changing performance is selected from among the cells constituting an integrated circuit based on evaluation results in step S30. In the cell performance change step S50, the performance characteristics of the cell selected in step S40 are determined referring to a library 15 by use of its external conditions.