Impact of negative bias temperature instability on the single-event upset threshold of a 65 nm SRAM cell
Abstract
This paper presents experimental characterization of the impact of negative bias temperature instability on the single-event upset sensitivity of SRAM cells embedded in a 65 nm CMOS test vehicle. Pre and post-aging SEU threshold laser energy measurements indicate that the cells sensitivity increases over time. The results are confirmed by electrical simulation and the consequences in terms of SEU rate prediction are discussed.