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Static Timing Analysis
LiveA static timing engine with a real Python API - timing analysis you can script, query, and automate.
Why it exists
STA is the heartbeat of physical design, yet most teams interact with it through TCL incantations and log files. Automating timing-driven decisions means parsing text meant for humans.
SAC is a modern static timing analysis engine (C++20) with first-class Python bindings and structured JSON/YAML reporting - so timing data becomes something your scripts, your flows, and your AI tooling can actually consume.
What it does
A C++20 timing engine in the OpenSTA class, engineered for clean integration into automated flows.
pybind11 bindings expose the timer as a library: query paths, slacks, and constraints programmatically instead of scraping reports.
JSON/YAML timing reports feed dashboards, regressions, and downstream tools without a single regex.
How it compares
Where this tool stands against the open-source path and the commercial incumbents - capability by capability.
| Capability | SAC | OpenSTA | Commercial signoff timers |
|---|---|---|---|
| Scripting interface | Native Python API | TCL | TCL |
| Report format | Structured JSON/YAML | Text reports | Text + proprietary DB |
| Automation-readiness | Built as a library | Built as a binary | Built as a seat |
| Flow integration | FlowBit node out of the box | Script it yourself | Vendor flow lock-in |
| Deployment | Local-first via Escanor | Local | Licence server, per-seat |
Qualitative capability comparison based on publicly documented behavior of the referenced tools. No performance figures are implied.
Where it sits: stage S5c - Timing / Parasitic / ECO in the 03 Implement bucket - one node in the platform flow.
Keep exploring
A modern RTL synthesis suite - clean C++ core, built to be scripted, inspected, and trusted.
Explore Stella →Lint, merge, and formally prove your timing constraints - and draft them from natural language.
Explore VisSDC →Orchestrate your entire EDA flow as a graph - reproducible runs, convergence loops, and full visibility.
Explore FlowBit →Book a demo, or get early access to the platform.