Mitigating NBTI in the Physical Register File Through Stress Prediction

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Storage
Format: PDF
Degradation of transistor parameter values due to Negative Bias Temperature Instability (NBTI) has emerged as a major reliability problem in current and future transistor generations. NBTI Aging of SRAM cell leads to a lower noise margin, thereby increasing the failure rate. The physical register file, which consists of an array of SRAM cells, can suffer from data loss, leading to system failure. In this paper, the authors explore a novel approach by investigating NBTI stress and mitigation at the instruction granularity. While a wide range of NBTI stress exists in different registers, the stress induced by specific instructions is highly predictable.
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