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Erratic Bit Errors in Latches
Relangi, P.; Mitra, S.;
Reliability physics symposium, 2007. proceedings. 45th annual. ieee international
15-19 April 2007
Page(s):445
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451
Abstract:
Erratic bit errors are caused by erratic shifts in Vmin, the minimum supply voltage at which a design can correctly operate, due to trapping/detrapping of electrons and holes in the gate oxide. The authors study the effects of erratic bit errors in latches through SPICE simulation using the gate-to-source resistive short model. The authors demonstrate that a latch structure using a redundant latch and a C-element corrects most latch erratic bit errors and significantly reduces their impact. This structure enables chip-level power reduction by enabling chip operation at low voltage through erratic bit error correction in latches. This structure can also correct radiation-induced soft errors and is referred to as BISER or built-in-soft-error resilience structure.
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