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This paper presents a method for inferring circuit delay shifts due to bias temperature instability using ring oscillator (ROSC) sensors. This procedure is based on presilicon analysis, postsilicon ROSC measurements, a new aging analysis model called the Upperbound on fMax (UofM), and a look-up table that stores a precomputed degradation ratio that translates delay shifts in the ROSC to those in the...
State-of-the-art timing tools are built around the use of current source models (CSMs), which have proven to be fast and accurate in enabling the analysis of large circuits. As circuits become increasingly exposed to process and temperature variations, there is a strong need to augment these models to account for thermal effects and for the impact of adaptive body biasing, a compensatory technique...
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