System and method for generating at-speed structural tests to improve process and environmental parameter space coverage
US7856607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2007 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Feb 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for enhancing the practicability of at-speed structural testing (ASST). In one embodiment, the system includes first means for performing statistical timing analysis on a design of logic circuitry. A second means performs a criticality analysis on the logic circuitry as a function of the statistical timing analysis so as to determine a criticality probability for each node of the logic circuitry. A third means selects nodes of the logic circuitry as a function of the criticality analysis. A fourth means selects timing paths as a function of the criticality probabilities of the selected nodes. A fifth means generates an ASST pattern for each of the selected timing paths. A sixth mean is provided to perform ASST on a fabricated instantiation of the design at functional speed using the generated ASST pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.