SEU-Tolerant QDI Circuits

  • Authors:
  • Wonjin Jang;Alain Martin

  • Affiliations:
  • California Institute of Technology;California Institute of Technology

  • Venue:
  • ASYNC '05 Proceedings of the 11th IEEE International Symposium on Asynchronous Circuits and Systems
  • Year:
  • 2005

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Abstract

This paper addresses the issue of Single-Event Upset (SEU) in quasi delay-insensitive (QDI) asynchronous circuits. We show that an SEU can cause abnormal computations in QDI circuits beside deadlock, and we propose a generalmethod to make QDI circuits SEU-tolerant. We present a simplified SEU-tolerant buffer implementations for CMOS technology. Finally, we present a case study of a one-bit comparator and show SPICE-simulation results.