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Aging effects in FPGAs: an experimental analysis

Abstract : Modern Field Programmable Gate Arrays (FP-GAs) are built using the most advanced technology nodes to meet performance and power demands. This makes them susceptible to various reliability challenges at nano-scale, and in particular to transistor aging. In this paper, an experimental analysis is made to identify the main parameters and phenomena influencing the performance degradation of FPGAs. For that purpose, a set of controlled ring-oscillator-based sensors with different frequencies and tunable activity control are implemented on a Spartan-6 FPGA. Thus, the internal switching activities (SAs) and signal probabilities (SPs) of the sensors can be varied. We performed accelerated-lifetime conditions using elevated temperatures and voltages in a controlled setting to stress the FPGA. A novel monitoring method based on measuring the electromagnetic emissions of the FPGA is used to accurately monitor the performance of the sensors before and after the stress. The experiments reveal the extent of performance degradations, the impact of SPs and SAs, and the relative impacts of BTI and HCI aging factors.
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Submitted on : Wednesday, December 21, 2016 - 4:16:18 PM
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Abdulazim Amouri, Florent Bruguier, Saman Kiamehr, Pascal Benoit, Lionel Torres, et al.. Aging effects in FPGAs: an experimental analysis. FPL: Field Programmable Logic and Applications, Sep 2014, Munich, Germany. ⟨10.1109/FPL.2014.6927390⟩. ⟨lirmm-01421134⟩



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