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VLSI Testing Course

Complete Course with Simple Explanations

VLSI Testing ensures chips work correctly after fabrication. It detects manufacturing defects and validates functionality.

Fault models represent failures:
• Stuck-At Fault
• Transition Fault
• Bridging Fault
• Open Fault
• Delay Fault

ATPG tools create vectors to detect faults. Tools: TetraMAX, FastScan.

Scan DFFs convert sequential logic to testable form.

Chip tests itself using LBIST & MBIST.

March C, March X, Checkerboard, Walking 1/0.

JTAG used for board-level testing.

Detects slow paths & timing issues.

Higher coverage → lower defects.

ATE machines like Advantest, Teradyne used for production.
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