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Recovery during concurrent on-line testing of identical circuits
Conference proceeding

Recovery during concurrent on-line testing of identical circuits

I Pomeranz and S M Reddy
DFT 2005: 20TH IEEE INTERNATIONAL SYMPOSIUM ON DEFECT AND FAULT TOLERANCE IN VLSI SYSTEMS, pp.475-483
2005
DOI: 10.1109/DFTVS.2005.56

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Abstract

We show that a concurrent on-line testing scheme based on output comparison of identical circuits can also identify situations where the circuit recovers from a permanent fault, i.e., functional operation can continue temporarily in spite of the presence of a fault. We show that the ability to recover from a fault is circuit-dependent, and that some circuits are better than others at allowing recovery. We also discuss the possibility of false recovery in the presence of multiple faulty and its implications.

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