Evaluation of design for reliability techniques in embedded flash memories

  • Authors:
  • Benoît Godard;Jean-Michel Daga;Lionel Torres;Gilles Sassatelli

  • Affiliations:
  • Embedded Non-Volatile Memory Group, Rousset Cedex, France and Université, Montpellier Cedex, France;Embedded Non-Volatile Memory Group, Rousset Cedex, France;Université de Montpellier II, Montpellier Cedex, France;Université de Montpellier II, Montpellier Cedex, France

  • Venue:
  • Proceedings of the conference on Design, automation and test in Europe
  • Year:
  • 2007

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Abstract

Non-volatile Flash memories are becoming more and more popular in Systems-on-Chip (SoC). Embedded Flash (eFlash) memories are based on the well-known floating-gate transistor concept. The reliability of such type of technology is a growing up issue for embedded systems; endurance and retention are of course the main features to analyze. To enhance memory reliability current eFlash memories designs use techniques such as Error Correction Code (ECC), Redundancy or Threshold Voltage (VT) Analysis. In this paper, a memory model to evaluate the reliability of eFlash memory arrays under distinct enhancement schemes is developed.