To ensure a high-quality solution, engineers employ several standardized techniques:

A high-quality testing flow relies heavily on . ATPG software analyzes the netlist and automatically creates the mathematical patterns needed to achieve maximum fault coverage. A "high-quality" solution in this context means:

The ability to determine the signal value at any internal node by looking at the output pins. Key DFT Techniques for High-Quality Results

The traditional method of "testing from the outside in" is obsolete. Modern chips are too dense for external testers to probe every internal node. This is where comes in.

This involves replacing standard flip-flops with "Scan Flip-Flops." When the chip is in test mode, these flip-flops form a long shift register (a scan chain), allowing testers to "shift in" test patterns and "shift out" the results.

Aiming for 99% or higher for stuck-at faults.