Patent ID: 7299445

Claim:
A method for creating a characterized cell library, the method comprising: defining a receiver model for a cell, the receiver model comprising a non-linear capacitor; selecting a first value for the non-linear capacitor; applying a driver signal to the non-linear capacitor at the first value to generate a first portion of a model receiver signal from a first supply voltage to a first signal voltage; adjusting the first value for the non-linear capacitor until the first portion of the model receiver signal provides a first target fit to an actual receiver signal for a cell; selecting a second value for the non-linear capacitor in the receiver model; applying the driver signal to the non-linear capacitor at the second value to generate a second portion of the model receiver signal from the first signal voltage to a second signal voltage; adjusting the second value for the non-linear capacitor until the model receiver signal provides a second target fit to the actual receiver signal for the cell; and compiling the first value for the non-linear capacitor and the second value for the non-linear capacitor in a first cell entry in the characterized cell library, the first cell entry being referenced by an identifier for the first cell.