Means of calculating power consumption characteristic and method thereof

摘要

A method for calculating a power consumption library on a gate level in a large-scale transistor circuit. The method includes: dividing a circuit network into a partial circuit network by a gate terminal of a transistor, calculating a relation of an input logical value to an output logical value in a partial circuit; calculating a relation of an output logical value to an input logical change in an output wiring between partial circuits, based on a partial circuit connection and a relation of an input logical value to an output logical value in a partial circuit; measuring a partial circuit power consumption by using an input logical change in each partial circuit; and regarding the sum of a power consumption at each partial circuit corresponding to an input logical change as a power consumption in a circuit network. The method also provides for reuse when a current path is the same in a circuit input logical change. The calculation also involves regarding the transistor as the same when a transistor with the same current characteristic is arrayed in the same order on the path even if a current path is different.