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Static timing analysis (STA) is a simulation method of computing the expected timing of a synchronous digital circuit without requiring a simulation of the full circuit.
High-performance integrated circuits have traditionally been characterized by the clock frequency at which they operate. Measuring the ability of a circuit to operate at the specified speed requires an ability to measure, during the design process, its delay at numerous steps. Moreover, delay calculation must be incorporated into the inner loop of timing optimizers at various phases of design, such as logic synthesis, layout (placement and routing), and in in-place optimizations performed late in the design cycle. While such timing measurements can theoretically be performed using a rigorous circuit simulation, such an approach is liable to be too slow to be practical. Static timing analysis plays a vital role in facilitating the fast and reasonably accurate measurement of circuit timing. The speedup comes from the use of simplified timing models and by mostly ignoring logical interactions in circuits.[1] This has become a mainstay of design over the last few decades.
One of the earliest descriptions of a static timing approach was based on the Program Evaluation and Review Technique (PERT), in 1966.[2] More modern versions and algorithms appeared in the early 1980s.[3][4][5]
^Cortadella, Jordi (January 30, 2017). Electronic Design Automation for IC Implementation, Circuit Design, and Process Technology (2nd ed.). Boca Raton: CRC Press. p. 134. ISBN 9781315215112.
^Kirkpatrick, TI & Clark, NR (1966). "PERT as an aid to logic design". IBM Journal of Research and Development. 10 (2). IBM Corp.: 135–141. doi:10.1147/rd.102.0135.
^McWilliams, T.M. (1980). "Verification of timing constraints on large digital systems" (PDF). Design Automation, 1980. 17th Conference on. IEEE. pp. 139–147.
^G. Martin; J. Berrie; T. Little; D. Mackay; J. McVean; D. Tomsett; L. Weston (1981). "An integrated LSI design aids system". Microelectronics Journal. 12 (4): 18–22. doi:10.1016/S0026-2692(81)80259-5.
^Hitchcock, R. and Smith, G.L. and Cheng, D.D. (1982). "Timing analysis of computer hardware". IBM Journal of Research and Development. 26 (1). IBM: 100–105. CiteSeerX 10.1.1.83.2093. doi:10.1147/rd.261.0100.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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