About the Author: This article synthesizes industry best-practices from semiconductor leaders (DFT guidelines from TSMC, Samsung, Intel) and EDA vendors (Synopsys, Siemens EDA, Cadence) for engineers designing robust digital systems.
Embedded deterministic test technology combines deterministic test pattern generation with on-chip compression, achieving compression ratios of 100x or higher. On-chip decompressors expand compressed test patterns into the full scan chains, while compactors compress multiple scan chain outputs into a smaller number of observation points. The compressed test interface typically requires only a handful of pins, making it practical for wafer-level testing where probe card complexity limits available test access. Intel) and EDA vendors (Synopsys
