A Bist Scheme for Non-Volatile Memories

  • Authors:
  • Piero Olivo;Marcello Dalpasso

  • Affiliations:
  • Dipartimento di Ingegneria, Università di Ferrara, Via Saragat 1, I-44100 Ferrara, Italy.;Dipartimento di Ingegneria, Università di Ferrara, Via Saragat 1, I-44100 Ferrara, Italy.

  • Venue:
  • Journal of Electronic Testing: Theory and Applications - Special issue on On-line testing
  • Year:
  • 1998

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Abstract

A new BIST scheme for on-chip testing of non-volatile memories and based onsignature analysis is presented. The signature of the whole memory, whose content can bechanged selectively by the user, is dynamically self-learned by thememory and it is saved in a dedicated memory location.Either such a signature can be externally compared with the expected one inorder to check for the programming operation, or it can be used forcomparison purposes when data retention must be self-tested.