Estimation of process variation impact of slack in multi-corner path-based static timing analysis

US7784003B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Nathan C. Buck · Underhill, US
• John P. Dubuque · Jericho, US
• Eric A. Foreman · Saint Albans, US
• Peter A. Habitz · South Burlington, US
• Kerim Kalafala · Rhinebeck, US
• Jeffrey M. Ritzinger · Chippewa Falls, US
• Xiaoyue Wang · Santa Clara, US

Key dates

• Filing date: Feb 26, 2007
• Grant date: Aug 24, 2010
• Expiry date: Mar 30, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F30/3312
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method and system for reducing a number of paths to be analyzed in a multi-corner static timing analysis. An estimated upper slack variation based on a non-common path delay for a racing path is utilized in determining if a multi-corner static timing analysis may be bypassed for a racing path. In another example, an estimated maximum RSS credit based on a total delay for a racing path is utilized in determining if a multi-corner static timing analysis may be bypassed for a racing path.