A novel test generation method for small-delay defects with user-defined fault model

Chao Jun Shang, Cheng Hung Wu, Kuen Jong Lee, Yu Hsiang Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To ensure the quality of high-performance VLSI chips, small delay defects (SDDs) are widely considered in the industry. Several ATPG tools have been developed to deal with these defects, with timing information employed to help select long paths that are more sensitive to small delays and hence high-quality tests can be generated. However, these methods usually result in a large pattern count or cannot achieve high test coverage (DTC). In this paper, we propose a novel test generation method for SDDs based on a common path stem concept. By extracting the common path stems of those long paths in a circuit, one can use the user-defined fault model (UDFM) to set some conditions on the path stems and thus force the fault effects of SDDs to propagate through long paths, such that a compact pattern set can be generated and high DTC can be achieved for SDDs. Compared with the well-known timing-aware ATPG, our proposed method can reduce 19.2% pattern count and increase 0.74% DTC on average for ISCAS89 and IWLS05 benchmark circuits.

Original languageEnglish
Title of host publication2019 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728106557
DOIs
Publication statusPublished - 2019 Apr
Event2019 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2019 - Hsinchu, Taiwan
Duration: 2019 Apr 222019 Apr 25

Publication series

Name2019 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2019

Conference

Conference2019 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2019
CountryTaiwan
CityHsinchu
Period19-04-2219-04-25

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Instrumentation
  • Computer Networks and Communications
  • Hardware and Architecture

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  • Cite this

    Shang, C. J., Wu, C. H., Lee, K. J., & Chen, Y. H. (2019). A novel test generation method for small-delay defects with user-defined fault model. In 2019 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2019 [8741773] (2019 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VLSI-DAT.2019.8741773