Statistical Static Timing Analysis - Why STA Is Popular

Why STA Is Popular

Old fashioned deterministic STA is popular for good reasons:

  • It requires no vectors, so it does not miss paths.
  • The run time is linear in circuit size (for the basic algorithm).
  • The result is conservative.
  • It typically uses some fairly simple libraries (typically delay and output slope as a function of input slope and output load).
  • It is easy to extend to incremental operation for use in optimization.

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