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Erschienen in: Journal of Electronic Testing 6/2010

01.12.2010

Study of Read Recovery Dynamic Faults in 6T SRAMS and Method to Improve Test Time

verfasst von: Prashant Dubey, Akhil Garg, Shashank Mahajan

Erschienen in: Journal of Electronic Testing | Ausgabe 6/2010

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Abstract

Capturing dynamic and hard to detect faults in static embedded memories is a significant challenge for DFT designers. Not only it demands at-speed testing, it also requires a large number of operations (generally greater than 24 consecutive reads per memcell) on each memory cell, which is hard to achieve at lower testing budgets. We present a comprehensive study done on resistive defects which lead to read recovery faults in 6T memcell SRAMs. A novel DFT technique has been proposed using calibrated variation in dummy path of self timed memories to capture hard to detect resistive faults in small number of operations. Results show 89% reduction in test time for a robust test on an industrial SRAM with 2048 words operating at 400 MHz.

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Metadaten
Titel
Study of Read Recovery Dynamic Faults in 6T SRAMS and Method to Improve Test Time
verfasst von
Prashant Dubey
Akhil Garg
Shashank Mahajan
Publikationsdatum
01.12.2010
Verlag
Springer US
Erschienen in
Journal of Electronic Testing / Ausgabe 6/2010
Print ISSN: 0923-8174
Elektronische ISSN: 1573-0727
DOI
https://doi.org/10.1007/s10836-010-5176-5

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