Patent ID: 9378315
Filing Date: 2016-06-28
CPC Classification: G06F

Claim Text:
1. A method for semiconductor process corner sweep simulation based on a value selection function, the method comprising the following steps: (1) defining a value selection function, wherein in the value selection function, a corner number, which is a natural number enumeration and representing a process corner of a device model, is used as a first independent variable, parameter values of the device model of a semiconductor process manufacturer line under enumerated process corner conditions are used as the rest of independent variables, and device model parameters of the device model of the semiconductor process manufacturer line under the enumerated process corner conditions are function values to be returned that is expressed by an equation given below: wherein, the function “f” on the right side of the equation is the value selection function, and a return value of the value selection function, upon a selection operation is performed according to a value of the first independent variable, is obtained and assigned to a device model parameter on the left side of the equation via an equal sign; (2) setting up the first independent variable, namely corner_number in the value selection function, as a user-defined design variable in a sweep simulation program, and running the sweep simulation program while sweeping the corner_number in semiconductor process corner sweep simulation one by one for values within a predefined range of natural numbers; and (3) outputting a waveform chart using simulation results of the semiconductor process corner sweep simulation by utilizing corner_number as an independent variable and a parameter value of the device model under a process corner condition or a performance response value of a testbench circuit under a condition using the process corner condition as a dependent variable.