Altos Design Automation

Variety creates statistical timing cell models that represent the non-linear impact of any number of systematic and random parameter variations. All library timing data is characterized for variation including delays, transitions, timing constraints, and pin capacitances. Variety generates statistical static timing analysis (SSTA) models for a number of commercial SSTA products from a single characterization run.

Liberate is an automated library characterization tool for standard cells and I/Os that serves existing static timing analyzers. Liberate takes in a Spice netlist and Spice subcircuits, and automatically generates a characterized cell library. It supports both Composite Current Source (CCS) model backed by Synopsys and the Effective Current Source Model (ECSM) backed by Cadence Design Systems.