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Mechanisms leading to single event upset

Technical Report ·
OSTI ID:5823747

The SRAM cell recovery time following a 140 MeV Krypton strike on a Sandia SRAM is modeled using a two-dimensional transient numerical simulator and circuit code. Strikes at both n- and p-channel off drains are investigated. Four principle results are obtained. The recovery time after a strike is strongly dependent on the drive of the restoring transistor. A struck off p-channel drain-to-gate capacitive coupling has a significant effect on recovery in SRAM with feedback resistors. Recovery time is approximately linear with LET over LET in the range to 0.4 pC/micrometer. Finally, an experimental n-channel Single Event Upset (SEU) was observed in a Sandia SRAM without feedback resistors.

Research Organization:
Sandia Labs., Albuquerque, NM (USA)
OSTI ID:
5823747
Report Number(s):
ATR-86(8139)-5
Country of Publication:
United States
Language:
English