tag: scan chain

How To Improve Yield Ramp For New Designs And Technology Nodes
By Jayant D'Souza - 08 Nov, 2022 - Comments: 0

The complicated silicon defect types and defect distribution of new IC manufacturing technologies can result in very low yield for new designs and technology nodes. During technology qualification using test chips, scan chain failures account for most of the chip failures. Diagnosing those scan chain defects is a powerful way to uncover new and systematic defects. The chip maker’s goal is ... » read more

High-Quality Test And Embedded Analytics Are Vital For Secure SoCs
By Lee Harrison - 11 Jan, 2022 - Comments: 0

Applications like as smart cards and devices used in the defense industry require security to ensure that sensitive data is inaccessible to outside agents. This used to be a niche requirement met through custom solutions. However, now that automotive and cyber-physical systems are proliferating, the requirements around secure test and monitoring are becoming mainstream. The current best strateg... » read more

Novel Reversible Chain Diagnosis Improves Resolution
By Jayant D'Souza - 09 Nov, 2021 - Comments: 0

Yield ramp for ICs designed on advanced process technologies faces new challenges because of the very complicated silicon defect types and defect distribution. Yield ramp and yield improvement are not just about profitability and time-to-market, but also have a role in today’s electronics supply chain crisis. That means yield ramp affects not just the IC maker, but the global economy. Ever... » read more

Making IC Test Faster And More Accessible: Part 2
By Randy Fish - 11 Nov, 2020 - Comments: 0

Recently, my colleague Robert Ruiz described a new approach to scan test that utilizes the high-speed I/O (HSIO) ports that exist on most chips. The benefits of this new approach include reduced test time and cost thanks to the high-speed interface. Simplified pin electronics and tester setup are also benefits, as is the ability to run manufacturing tests in the field in support of silicon life... » read more

Scan Diagnosis
By Ed Sperling - 20 Dec, 2019 - Comments: 1

Jayant D’Souza, product manager at Mentor, a Siemens Business, explains the difference between scan test and scan diagnosis, what causes values in a scan test to change, how this can be used to hone in on the actual cause of a failure in a design, and how to utilize test hardware more efficiently. » read more

Scan Compression Is No Longer About Compression
By Rohit Kapur - 16 Sep, 2019 - Comments: 0

Scan compression was introduced in the year 2000 and has seen rapid adoption. Nearly every design’s test methodology today implements this technology, which inserts compression logic in the scan path between the scan I/Os and the internal chains. In this article, we take a critical look at the technology to understand how scan compression has matured. The road to scan compression Since th... » read more

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