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Impact of the angle of incidence on negative muon-induced SEU cross sections of 65-nm Bulk and FDSOI SRAMs

Liao, W.*; Hashimoto, Masanori*; Manabe, Seiya*; Watanabe, Yukinobu*; Abe, Shinichiro   ; Tampo, Motonobu*; Takeshita, Soshi*; Miyake, Yasuhiro*

Muon-induced single event upset (SEU) is predicted to increase with technology scaling. The angle of incidence of terrestrial muons is not always perpendicular to the chip surface. Consequently, the impact of the angle of incidence of muons on SEUs should be evaluated. This study conducts negative muon irradiation tests on bulk SRAM and FDSOI SRAM at two angles of incidence: 0 degree (vertical) and 45 degree (tilted). The tilted incidence drifts the muon energy peak to a higher energy. Moreover, the SEU characteristics (i.e., such as the voltage dependences of the SEU cross sections and multiple cells upset patterns) between the vertical and tilted incidences are similar.

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Category:Engineering, Electrical & Electronic

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