Ramp Voltage Testing for Detecting Interconnect Open Faults

  • Authors:
  • Yukiya Miura

  • Affiliations:
  • -

  • Venue:
  • IEICE - Transactions on Information and Systems
  • Year:
  • 2008

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Abstract

A method for detecting interconnect open faults of CMOS combinational circuits by applying a ramp voltage to the power supply terminal is proposed. The method can assign a known logic value to a fault location automatically by applying a ramp voltage and as a result, it requires only one test vector to detect a fault as a delay fault or an erroneous logic value at primary outputs. In this paper, we show fault detectability and effectiveness of the proposed method by simulation-based and theoretical analysis. We also expose that the method can be applicable to every fault location in a circuit and open faults with any value. Finally, we show ATPG results that are suitable to the proposed method.