On the Use of Multiple Fault Detection Times in a Method for Built-In Test Pattern Generation for Synchronous Sequential Circuits

  • Authors:
  • Irith Pomeranz;Sudhakar M. Reddy

  • Affiliations:
  • -;-

  • Venue:
  • ETW '00 Proceedings of the IEEE European Test Workshop
  • Year:
  • 2000

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Abstract

The first time unit where a fault in a synchronous sequential circuit is detected by a given test sequence T0 is used by various procedures. One such procedure selects input sequences that are loaded onto an on-chip memory and used as seeds for built-in test pattern generation. Each input sequence is constructed based on a different fault f and is extracted from T0 around the first detection time of f. In this work, we extend this procedure to consider multiple time units where every target fault f is detected by T0 in order to select a shorter sequence based on f .The result is reduced storage requirements and test application time for this built-in test pattern generation approach.