Which stem or couple of stems for which optimization?
Traditional libraries, classified as “Complex Cell Set Libraries” (CCSL), are unstructured bundles of cells trying to satisfy at once several optimization criteria: speed, power, leakage, area…
Opposite to this approach, SESAME is a mid-size grouping of specialized and well-structured “stems”: some of these library stems are ultimately optimized for one prime criterion, e.g. Low Power Consumption (LC), High Density (HD), while others offer the possibility to operate at Multi Voltage (MV).
Each library stem of SESAME results from a handcrafted work of art, cell by cell. Indeed, each cell is carefully optimized at both electrical and layout levels to provide the highest performance on the chosen optimization criterion of the stem.
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