Wei-Lii Tan

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Wei-Lii Tan is the product manager for AMS Verification at Mentor, a Siemens Business.

Author's Latest Posts

Timing Library LVF Validation For Production Design Flows

By Wei-Lii Tan - 27 Feb, 2020 - Comments: 1

Variation modeling has evolved over the past several years from a single derating factor that represents on-chip variation (OCV), to Liberty Variation Format (LVF), today’s leading standard format that encapsulates variation information in timing libraries (.libs). LVF data is considered a requirement for advanced process nodes 22nm and below. At the smallest process nodes such as 7nm and ... » read more

Cloud Characterization

By Wei-Lii Tan - 19 Dec, 2019 - Comments: 0

Library characterization is a compute-intensive task that takes days to weeks to complete. Runtimes for library characterization are increasing due to larger library sizes, higher number of operating conditions to characterize, as well as the need for statistical variation modeling in libraries at 22/20nm and smaller process nodes. Cloud platforms offer a way to accelerate library characterizat... » read more

Next-Generation Liberty Verification And Debugging

By Wei-Lii Tan - 27 Sep, 2018 - Comments: 1

Accurate library characterization is a crucial step for modern chip design and verification. For full-chip designs with billions of transistors, timing sign-off through simulation is unfeasible due to run-time and memory constraints. Instead, a scalable methodology using static timing analysis (STA) is required. This methodology uses the Liberty file to encapsulate library characteristics such ... » read more