Angled flip-flop single-event cross sections for submicron bulk CMOS technologies

Experimental angled heavy-ion single-event cross sections for hardened and unhardened flip-flops for technology nodes ranging from 28-nm to 130-nm are compared. Results show that hardened flip-flop cross sections increase at a faster rate with increasing angle of incidence than unhardened designs as technology scales. Hardened flip-flop cross section approaches unhardened flip-flop cross section for high incidence angular strikes, and surpasses unhardened flip-flop cross sections at 28-nm feature sizes.