Path Delay fault test currently exploits DfT-based techniques, mainly relying on scan chains, widely supported by commercial tools. However, functional testing may be a desirable choice in this context because it allows to catch faults at-speed with no hardware overhead and it can be used both for endof-manufacturing tests and for in-field test. The purpose of this article is to compare the results that can be achieved with both approaches. This work is based on an open-source RISC-V-based processor core as benchmark device. Gathered results show that there is no correlation between stuck-at and path delay fault coverage, and provide guidelines for developing more effective functional test.
New Perspectives on Core In-field Path Delay Test / Cantoro, Riccardo; Foti, Dario; Sartoni, Sandro; Sonza Reorda, Matteo; Anghel, Lorena; Portolan, Michele. - ELETTRONICO. - (2020), pp. 1-5. (Intervento presentato al convegno 2020 IEEE International Test Conference (ITC) tenutosi a Washington DC (USA) nel 01-06 November 2020) [10.1109/ITC44778.2020.9325260].
New Perspectives on Core In-field Path Delay Test
Cantoro, Riccardo;Foti, Dario;Sartoni, Sandro;Sonza Reorda, Matteo;Portolan, Michele
2020
Abstract
Path Delay fault test currently exploits DfT-based techniques, mainly relying on scan chains, widely supported by commercial tools. However, functional testing may be a desirable choice in this context because it allows to catch faults at-speed with no hardware overhead and it can be used both for endof-manufacturing tests and for in-field test. The purpose of this article is to compare the results that can be achieved with both approaches. This work is based on an open-source RISC-V-based processor core as benchmark device. Gathered results show that there is no correlation between stuck-at and path delay fault coverage, and provide guidelines for developing more effective functional test.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2869358