Built-in self-test and self-diagnosis scheme 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 journalConference articlepeer-review

38 Scopus citations


Embedded memory test and diagnosis is becoming an important issue in system-on-chip (SOC) development. Direct access of the memory cores from the limited number of I/O pins is usually not feasible. Built-in self-diagnosis (BISD), which include built-in self-test (BIST), is rapidly becoming the most acceptable solution. We propose a BISD design and a fault diagnosis system for embedded SRAM. It supports manufacturing test as well as diagnosis for design verification and yield improvement. The proposed BISD circuit is on-line programmable for its March test algorithms. Test chips have been designed and implemented. Our experimental results show that the BISD hardware overhead is about 2.4% for a typical 128 Kb SRAM and only 0.65% for a 2 Mb SRAM.

Original languageEnglish
Pages (from-to)45-50
Number of pages6
JournalProceedings of the Asian Test Symposium
StatePublished - 2000
Event9th Asian Test Symposium - Taipei, Taiwan
Duration: 4 Dec 20006 Dec 2000


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