Deterministic BIST with multiple scan chains

  • Authors:
  • Gundolf Kiefer;Hans-Joachim Wunderlich

  • Affiliations:
  • -;-

  • Venue:
  • ITC '98 Proceedings of the 1998 IEEE International Test Conference
  • Year:
  • 1998

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Abstract

A deterministic BIST scheme for circuits withmultiple scan paths is presented. A procedure isdescribed for synthesizing a pattern generator whichstimulates all scan chains simultaneously andguarantees complete fault coverage.The new scheme may require less chip area than aclassical LFSR-based approach while better or evencomplete fault coverage is obtained at the same time.