A built-in self-test scheme with diagnostics support for embedded SRAM

Chih Wea Wang, Chi Feng Wu, Jin Fu Li, Cheng Wen Wu, Tony Teng, Kevin Chiu, Hsiao Ping Lin

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


In this paper we propose a novel built-in self-test (BIST) design for embedded SRAM cores. Our contribution includes a compact and efficient BIST circuit with diagnosis support and an automatic diagnostic system. The diagnosis module of our BIST circuit can capture the error syndromes as well as fault locations for the purposes of repair and fault/failure analysis. In addition, our design provides programmability for custom March algorithms with lower hardware cost. The combination of the on-line programming mode and diagnostic system dramatically reduces the effort in design debugging and yield enhancement. We have designed and implemented test chips with our BIST design. Experimental results show that the area overhead of the proposed BIST design is only 2.4% for a 128 KB SRAM, and 0.65% for a 2 MB one.

Original languageEnglish
Pages (from-to)637-647
Number of pages11
JournalJournal of Electronic Testing: Theory and Applications (JETTA)
Issue number6
Publication statusPublished - 2002 Dec 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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