FAULT DIAGNOSIS IN-SCAN-BASED BIST

  • Authors:
  • Janusz Rajski;Jerzy Tyszer

  • Affiliations:
  • -;-

  • Venue:
  • ITC '97 Proceedings of the 1997 IEEE International Test Conference
  • Year:
  • 1997

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Abstract

The paper presents a new fault diagnosistechnique for scan-based BIST designs. It can be usedfor non-adaptive identification of the scan cells that aredriven by erroneous signals, irrespective of the errormultiplicity. The proposed scheme employs a simplescan cell selection hardware which in conjunction witha conventional signature analysis allows flexible trade-offsbetween the test application time and the diagnosticresolution.