Patent ID: 7827018
Filing Date: 2010-11-02
Classification: G11C

Abstract:
1. A computer-performed method executed within a computer system for selecting repairs for a group of circuits having redundant elements for providing repair by replacing portions of the group of circuits with the redundant elements, comprising: evaluating the group of circuits at multiple test operating points of at least one environmental variable of the group of circuits, wherein the evaluating determines whether or not circuits within the group of circuits fail to meet required performance characteristics prior to aging; within the computer system, modeling an end-of-life yield using a model dependent on both a aging function and a result of the evaluating at multiple test operating points in accordance with the required performance characteristics; determining which of the multiple test operating points maximizes the end-of-life yield for the group of circuits as a selected candidate test operating point; using failure determinations at the selected candidate test operating point to select which portions of the group of circuits to replace with the redundant elements; and storing in a storage of the computer system, an indication of the selected portions of the group of circuits as portions marked for repair.