CIRCUIT OPERATION WORST CONDITION DECISION SYSTEM, METHOD, AND PROGRAM

摘要

A worst condition decision system (100) uses one or more parameters contained in a model function for simulating a circuit performance index as a probability variable and decides as the word condition, the parameter when the circuit performance index has a maximum value or a minimum value to be assumed in design in the model for simulating the circuit performance index and its irregularities. The worst condition decision system (100) includes worst condition search means (111) which searches the point where the circuit performance index has a maximum value or a minimum value on an equal probability plane corresponding to a predetermined good product ratio within a space defined by the parameter or in a region surrounded by the equal probability plane and makes is as the worst condition.