Simulating improbable events

  • Authors:
  • Suwen Yang;Mark R. Greenstreet

  • Affiliations:
  • University of British Columbia;University of British Columbia

  • Venue:
  • Proceedings of the 44th annual Design Automation Conference
  • Year:
  • 2007

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Abstract

Circuits such as flip-flops, sense amplifiers and synchronizers can exhibit metastability failures that are undetectable given the numerical accuracy limitations of simulators such as HSPICE. We present a novel simulation technique that allows us to generate accurate waveforms for the metastability failures and similar events. We apply our method to two latches and a self-resetting circuit for clock-phase generation.