Delay Testing Considering Power Supply Noise Effects

  • Authors:
  • Angela Krstic;Yi-Min Jiang;Kwang-Ting (Tim) Cheng

  • Affiliations:
  • -;-;-

  • Venue:
  • ITC '99 Proceedings of the 1999 IEEE International Test Conference
  • Year:
  • 1999

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Abstract

We propose a new delay test generation technique that can take into account the impact ofthe power supply noise on the signal propagation delays. This is different from existing delay fault models and test generation techniquesthat ignore the dependence of path delays onthe applied test patterns and cannot capture theworst-case timing scenarios in deep submicrondesigns. In addition to sensitizing the fault andpropagating the fault effects to the primary outputs, our new tests also produce the worst-casepower supply noise on the nodes in the targetpath. Thus, the tests also cause the worst-casepropagation delay for the nodes along the targetpath. Our experimental results on benchmarkcircuits show that the new delay tests producesignificantly longer delays on the tested pathscompared to the tests derived using existing delay testing methods.