RT Journal Article T1 Evaluation of a COTS 65-nm SRAM Under 15 MeV Protons and 14 MeV Neutrons at Low VDD A1 Rezaei, Mohammadreza A1 Martín Holgado, Pedro A1 Morilla, Yolanda A1 Franco Peláez, Francisco Javier A1 Fabero Jiménez, Juan Carlos A1 Mecha López, Hortensia A1 Puchner, Helmut A1 Hubert, Guillaume A1 Clemente Barreira, Juan Antonio AB This article presents an experimental study on the sensitivity of a commercial-off-the-shelf (COTS) bulk 65-nm static random access memory (SRAM) under 15.6 MeV proton irradiation when powered up at ultralow bias voltage. Tests were run on standby and while reading the memory. Results show obvious evidence indicating that decreasing the bias voltage below 1 V exponentially increases the number of observed errors. Single-bit upsets (SBUs) and multiple-cell upsets (MCUs) (mostly with vertical shapes according to the manufacturers' layout) are reported and their behavior is analyzed in this article. Predictions on the single-event upset (SEU) sensitivity obtained with the multiscales single-event phenomena predictive platform (MUSCA-SEP3) modeling tool are also provided and compared with the experimental results. These are also compared with 14.2 MeV neutrons, showing a significant difference in the cross sections for both irradiation sources. Total ionizing dose (TID) tests and GEANT4 simulations were also run to check for the reason behind the difference in the cross section between these two particles. PB IEEE-Inst Electrical Electronics Engineers Inc SN 0018-9499 YR 2020 FD 2020-10 LK https://hdl.handle.net/20.500.14352/7497 UL https://hdl.handle.net/20.500.14352/7497 LA eng NO This work was supported in part by the Spanish Ministry of Economy and Competitiveness (MINECO) under Project TIN2017-87237-P and in part by Spanish MINECO at CNA under Project ESP2015-68245-C4-4-P. NO Ministerio de Economía y Competitividad (MINECO) DS Docta Complutense RD 21 abr 2025