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A Parallel Test Pattern Generation Algorithm to Meet Multiple Quality Objectives

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3 Author(s)
Kuan-Yu Liao ; Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan ; Chia-Yuan Chang ; James Chien-Mo Li

This paper proposes a bit-level parallel ATPG algorithm (SWK) that generates multiple test patterns at a time. This algorithm converts decisions into bitwise logic operation so that W (CPU word size) test patterns are searched independently. Multiple objectives for different quality metrics can therefore be achieved in a single test generation process. Experimental results on ISCAS'89 and IWLS'05 benchmark circuits show that SWK test sets are better in many quality metrics than traditional 50-detect test sets, while the length of the former is shorter. Also, patterns selected from large N-detect pattern pool cannot achieve the same or higher quality than patterns generated by SWK.

Published in:

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  (Volume:30 ,  Issue: 11 )