Presentation 2009-06-19
Note on Yield and Area Trade-offs for MBIST in SoC
Masayuki Arai, Tatsuro Endo, Kazuhiko Iwasaki, Michinobu Nakao, Iwao Suzuki,
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Abstract(in English) In this study we evaluate the effectiveness of hardware overhead reduction of memory BIST and spare assignment algorithm. For a given memory cell fail rate, we theoretically analyze the area per a good die of an SoC with multiple SRAMs. We then propose the heuristic algorithm which determine whether each SRAM has the redundant row or not so that the area per a good die is minimized. We further propose the encoder-based comparator with small hardware overhead. With the memory benchmark SoCs which have more than 1000 SRAMs, the proposed comparator with heuristic algorithm is evaluated under several scenarios. The result shows that the overhead of encoder-based comparator is about the half of the conventional one, and combined with the heuristic algorithm it can reduce the total SoC area per a good die by 0.7%.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) embedded SRAM / MBIST / BISR / area per a good die
Paper # DC2009-11
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Committee DC
Conference Date 2009/6/12(1days)
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Registration To Dependable Computing (DC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Note on Yield and Area Trade-offs for MBIST in SoC
Sub Title (in English)
Keyword(1) embedded SRAM
Keyword(2) MBIST
Keyword(3) BISR
Keyword(4) area per a good die
1st Author's Name Masayuki Arai
1st Author's Affiliation Faculty of System Design, Tokyo Metropolitan University:Graduate School of System Design, Tokyo Metropolitan University()
2nd Author's Name Tatsuro Endo
2nd Author's Affiliation Graduate School of System Design, Tokyo Metropolitan University
3rd Author's Name Kazuhiko Iwasaki
3rd Author's Affiliation Faculty of System Design, Tokyo Metropolitan University:Graduate School of System Design, Tokyo Metropolitan University
4th Author's Name Michinobu Nakao
4th Author's Affiliation Renesas Technology Corp.
5th Author's Name Iwao Suzuki
5th Author's Affiliation Renesas Technology Corp.
Date 2009-06-19
Paper # DC2009-11
Volume (vol) vol.109
Number (no) 95
Page pp.pp.-
#Pages 6
Date of Issue