Patent ID: 6757873
Filing Date: 2004-06-29
Classification: G06F

Abstract:
A simulation method for a circuit characteristic of a semiconductor devise, comprising:obtaining a first characteristic value of a characteristic of an element of the semiconducter devise fluctuating most by a fluctuation of a parameter of the element; determining a width of the fluctuation of the parameter of the element matching a second characteristic value of a worst case of the characteristic of the element with the first characteristic value; and determining a third characteristic value of a worst case of the circuit characteristic of the semiconductor device based on the width of the fluctuation of the parameter of the element, wherein obtaining the first characteristic value comprises: inputting a frequency distribution of the fluctuation of the parameter; and obtaining the first characteristic value using the fluctuation according to Monte Carlo analysis; wherein said determining the width of the fluctuation of the parameter comprises obtaining a standard deviation (&sgr;) by approximating the frequency distribution to Gaussian distribution; and standardizing the width of the fluctuation with the standard deviation (&sgr;), and said determining the third characteristic value comprises determining the third characteristic value according to the width of the standardized fluctuation.