On capture power-aware test data compression for scan-based testing

  • Authors:
  • Jia Li;Xiao Liu;Yubin Zhang;Yu Hu;Xiaowei Li;Qiang Xu

  • Affiliations:
  • Key Laboratory of Computer System and Architecture, ICT, CAS, Beijing, China and Graduate University of Chinese Academy of Sciences, Beijing, China;The Chinese University of Hong Kong, Shatin, N.T., Hong Kong;The Chinese University of Hong Kong, Shatin, N.T., Hong Kong;Key Laboratory of Computer System and Architecture, ICT, CAS, Beijing, China;Key Laboratory of Computer System and Architecture, ICT, CAS, Beijing, China;The Chinese University of Hong Kong, Shatin, N.T., Hong Kong

  • Venue:
  • Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
  • Year:
  • 2008

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Abstract

Large test data volume and high test power are two of the major concerns for the industry when testing large integrated circuits. With given test cubes in scan-based testing, the "don't-care" bits can be exploited for test data compression and/or test power reduction. Prior work either targets only one of these two issues or considers to reduce test data volume and scan shift power together. In this paper, we propose a novel capture power-aware test compression scheme that is able to keep scan capture power under a safe limit with little loss in test compression ratio. Experimental results on benchmark circuits demonstrate the efficacy of the proposed approach.