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Reference.org
Statistical static timing analysis
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<p>Conventional <a href="/facts/Static_timing_analysis/hhxLf12R">static timing analysis</a> (STA) has been a stock analysis algorithm for the design of digital circuits for a long time. However the increased variation in semiconductor devices and interconnect has introduced a number of issues that cannot be handled by traditional (deterministic) STA. This has led to considerable research into statistical static timing analysis, which replaces the normal deterministic timing of gates and interconnects with probability distributions, and gives a distribution of possible circuit outcomes rather than a single outcome. </p>