Synopsys Timing Constraints And Optimization User Guide 2021 ~upd~ May 2026

The user guide outlines several stages of optimization to meet Performance, Power, and Area (PPA) goals.

: Paths that cannot be sensitized or don't need to meet timing (e.g., asynchronous reset synchronizers). synopsys timing constraints and optimization user guide 2021

: The primary constraint is create_clock , which defines the period and duty cycle. Secondary clocks, such as generated clocks for frequency dividers, are defined using create_generated_clock . The user guide outlines several stages of optimization

The 2021 documentation introduced enhanced support for advanced process nodes (7nm and below) where parasitic effects are dominant. Secondary clocks, such as generated clocks for frequency

: Setup checks ensure data arrives before the next clock edge, while hold checks ensure data remains stable long enough to be captured.

: Leveraging clock gating and multi-threshold CMOS (MTCMOS) cells to reduce both dynamic and leakage power during the timing-closure process. 4. Advanced Features in the 2021 Release

: Automatically adding buffers to long wires to reduce interconnect delay and fix high fan-out nets.