Method of measuring the impact of clock skew on slack during a statistical static timing analysis

摘要: Computing accurately and effectively the impact of clock skew on statistical slack in presence statistically variable timing quantities that accounts for both common path credit portion tree, RSS non-common tree. The is measured a per launch capture path-pair basis as function post-CPPR path-specific (including credit), total mean value latch-to-latch delay, random test guard time adjust. method includes: performing an initial block-based SSTA including CPPR analysis; selecting at least one pair, recording post slack, latch to adjust; quantifying thereof.