A Built-in Self-test and Diagnosis Strategy for Chemically Assembled Electronic Nanotechnology

  • Authors:
  • Jason G. Brown;R. D. Blanton

  • Affiliations:
  • Center for Silicon System Implementation, Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, USA 15213;Center for Silicon System Implementation, Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, USA 15213

  • Venue:
  • Journal of Electronic Testing: Theory and Applications
  • Year:
  • 2007

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Abstract

Chemically assembled electronic nanotechnology (CAEN) is under intense investigation as a possible alternative or complement to CMOS-based computing. CAEN is a form of molecular electronics that uses directed self-assembly and self-alignment to construct electronic circuits from nanometer-scale devices that exploit quantum-mechanical effects. Although expected to have densities greater than 108 gate-equivalents/cm2, CAEN-based systems may possibly exhibit defect densities of up to 10%. The highly defective CAEN circuits will therefore require a completely new approach to manufacturing computational devices. In order to achieve any level of significant yield, it will no longer be possible to discard a device once a defect is found. Instead, a method of using defective chips must be devised. A testing strategy is developed for chemically assembled electronic nanotechnology (CAEN) that takes advantage of reconfigurability to achieve 100% fault coverage and nearly 100% diagnostic accuracy. This strategy is particularly suited for regular architectures with high defect densities.