Complex design engineering; cannot easily modify patterns post-silicon. Algorithmic read/write testing of embedded RAMs. Catches dense array coupling and retention faults.
The percentage of modeled faults that the generated test patterns can successfully detect.
How easy is it to set an internal node to a specific value (0 or 1) from the input pins? Observability: digital systems testing and testable design solution
If you need assistance with a specific or LFSR polynomial generation
Generating the smallest input vector set for maximum coverage Scan Chains, Test Points Improving internal design controllability and observability On-Chip Testing Logic/Memory BIST, LFSR, MISR The percentage of modeled faults that the generated
Digital Systems Testing and Testable Design: A Comprehensive Guide to Solutions
Allows for in-field testing and reduces the need for expensive external ATE. C. Boundary Scan (JTAG/IEEE 1149.1) engineers use standard fault models:
Standard flip-flops are replaced with multiplexed "Scan Flip-Flops."
To systematically evaluate how well a test catches defects, engineers use standard fault models: