4.5.2. Limited Fault Coverage for Complex Faults

Try these first

1. 1.

   What is meant by 'fault coverage' in BIST?

   Hint

   Consider how many faults can be caught.

2. 2.

   What is a stuck-at fault?

   Hint

   Think about how a switch would stay in one position.

3. 3.

   What is fault coverage in BIST?

   • Percentage of detected faults
   • Number of test patterns
   • Type of faults detected

   Hint

   Focus on what percentage relates to detection.

4. 4.

   BIST is particularly poor at detecting which type of faults?

   • True
   • False

   Hint

   Consider what BIST excels at versus where it fails.

5. 5.

   Design a BIST system model that can handle unknown faults. Which components would you integrate to enhance its effectiveness?

   Hint

   Think about how AI can help with learning over time.

6. 6.

   Evaluate a scenario where a BIST system has missed an unknown fault leading to a product failure. How would you redesign the test process to ensure better detection?

   Hint

   Consider the importance of feedback in improving performance.