Digital circuitry in automotive ICs is commonly tested using a hybrid of on-chip compression/ATPG and logic built-in self-test (LBIST) technologies to achieve very high defect coverage for manufacturing test, and enable in-system and power-on self-test.
Test points are dedicated design structures used to improve the test results. Traditional LBIST test points improve results by addressing "random pattern resistance" in ICs. Mentor more recently developed test points specifically for on-chip compression/ATPG, which reduces ATPG pattern count by 2-4X above what is achieved with on-chip compression alone. The Tessent VersaPoint test point technology combines and improves upon these technologies.
"To deliver industry-leading automotive ICs, Renesas uses test points to help us meet our strict IC test requirements," said Hisanori Ito, Vice President, Automotive SoC Business Division at Renesas Electronics Corporation. "With the Tessent VersaPoint test point technology, we no longer need separate solutions for different types of ICs. As a result, we see improved quality and reduced cost in both manufacturing and in-system tests. The simplified DFT implementation flow also shortens development cycles and accelerates time-to-market."
Tessent VersaPoint technology results in higher LBIST test coverage compared to traditional LBIST test points, and better ATPG pattern count reduction than when using on-chip compression/ATPG test points. This technology is designed for test engineers using Tessent Hybrid ATPG/LBIST to improve cost and quality of test, particularly for ICs targeting automotive applications.
"Our customers are continuously looking to reduce their test costs as their design sizes grow and quality requirements become more stringent," said Brady Benware, Director of Marketing for the Tessent Product Family at Mentor. "At the same time, there is an increased demand for efficient in-system test in high-reliability applications. With the VersaPoint test point technology, our customers have a more effective way of meeting both manufacturing and in-system test requirements."
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Mentor Graphics Corporation, a Siemens business, is a world leader in electronic hardware and software design solutions, providing products, consulting services, and award-winning support for the world's most successful electronic, semiconductor, and systems companies. Corporate headquarters are located at 8005 S.W. Boeckman Road, Wilsonville, Oregon 97070-7777. Web site: http://www.mentor.com.
Mentor Graphics, Mentor, and Tessent are registered trademarks and VersaPoint is a trademark of Mentor Graphics Corporation. All other company or product names are the registered trademarks or trademarks of their respective owner.
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SOURCE Mentor, A Siemens Business
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