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Generation of Compact Stuck-At Test Sets Targeting Unmodeled Defects

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2 Author(s)
Kavousianos, X. ; Dept. of Comput. Sci., Univ. of Ioannina, Ioannina, Greece ; Chakrabarty, K.

This letter presents a new method to generate compact stuck-at test sets that offer high defect coverage. The proposed method first selects the most effective patterns from a large N-detect repository, by using a new output deviation-based metric. Then it embeds complete coverage of stuck-at faults within these patterns, and uses the proposed metric to further improve their defect coverage. Results show that the proposed method outperforms a recently proposed competing approach in terms of unmodeled defect coverage. In many cases, higher defect coverage is obtained even than much larger N-detect test sets for several values of N. Finally, results provide the insight that, instead of using N-detect testing with as large N as possible, it is more efficient to combine the output deviations metric with multi-detect testing to get high-quality, compact test sets.

Published in:

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on  (Volume:30 ,  Issue: 5 )