In today’s high-performance semiconductor world, timing is everything. Even the most functionally correct chip can fail if it doesn’t meet its timing requirements. That’s where Static Timing Analysis (STA) becomes a cornerstone of back-end design.

          At Avecas, we provide end-to-end STA services that ensure your design meets timing closure across all corners, modes, and operating conditions. From block-level to full-chip signoff, our experts help you achieve performance, power, and reliability goals—so your design is truly tape-out ready.

What is STA in Back-End Design?

Static Timing Analysis (STA) is a method of validating the timing performance of a design without applying test vectors. Instead, it analyzes all possible paths in a circuit to ensure signals propagate within required time constraints.

It helps detect:

• Setup and hold violations

• Clock skew and jitter issues

• Path delays under different corners (PVT variations)

• Timing bottlenecks that affect chip performance

By catching these issues early, STA saves costly redesigns and prevents timing-related silicon failures.

Avecas STA Services

1. Constraint Development & Validation

• Creation of SDC (Synopsys Design Constraints) for clock, IO, and path specifications.

• Validation of timing constraints against design intent.

2. Block-Level STA

• Hierarchical timing analysis for individual modules.

• Constraint propagation and block-level closure before integration.

3. Full-Chip STA

• Multi-corner, multi-mode (MCMM) analysis.

• Timing closure across voltage, process, and temperature variations.

• Handling of asynchronous paths and clock domain crossings.

4. Signoff Timing Analysis

• Using industry-standard tools (Primetime, Tempus, etc.) for final signoff.

• Comprehensive reporting on setup/hold violations, clock uncertainty, and margin.

5. ECO (Engineering Change Order) Support

• Timing-driven ECOs for last-mile fixes.

• Incremental STA for faster closure cycles.