On n-detection test sets and variable n-detection test sets for transition faults

  • Authors:
  • I. Pomeranz;S. M. Reddy

  • Affiliations:
  • Dept. of Electr. & Comput. Eng., Iowa Univ., Iowa City, IA;-

  • Venue:
  • IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
  • Year:
  • 2006

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Abstract

We study the effectiveness of n-detection test sets based on transition faults in detecting defects that affect the timing behavior of a circuit. We use path delay faults as surrogates for unmodeled defects, and show that the path delay fault coverage achieved by an n-detection transition fault test set increases significantly as n is increased. We also introduce a method to reduce the number of tests included in an n-detection test set by using different values of n for different faults based on their potential effect on the defect coverage. The resulting test sets are referred to as variable n-detection test sets