tag: design for test

Automotive Test Moves In-System
By Bryon Moyer - 09 Feb, 2021 - Comments: 1

With the electrification of automobiles, it’s not enough to test the new electronics thoroughly at the end of the manufacturing process. Safety standards now require that tests be performed live, in the field, with contingency plans should a test fail. “We see clear demand from the automotive semiconductor supply chain for design functionality specifically aimed at in-system monitoring,�... » read more

Streaming Scan Network
By Siemens EDA - 27 Jan, 2021 - Comments: 0

The increasing complexity in large System on Chip (SoC) designs present challenges to design-for-test (DFT). Hierarchical DFT alleviates some of those challenges, by itself, is no longer enough. Adding Tessent Streaming Scan Network (SSN) technology eliminates the difficult and costly trade-offs between test implementation effort and manufacturing test cost by decoupling core-level and chip-lev... » read more

DFT For SoCs Is Last, First, And Everywhere In Between
By Robert Ruiz - 12 Jan, 2021 - Comments: 0

Back in the dawn of time, IC test was the last task in the design flow. First, you designed the chip and then you wrote the functional test program to verify it performed as expected after manufacturing. Without much effort, some portion of the functional test program was often reused as the manufacturing test to determine that the silicon was defect-free. Fast forward to today and things ha... » read more

Digital Test Bulks Up – Or Down
By Bryon Moyer - 08 Dec, 2020 - Comments: 2

Large digital integrated circuits are becoming harder to test in a time- and cost-efficient manner. AI chips, in particular, have tiled architectures that are putting pressure on older testing strategies due to the volume of test vectors required. In some cases, these chips are so large that they exceed reticle size, requiring them to be stitched together. New testing efficiencies are needed... » read more

Pivoting Toward Safety-Critical Verification In Cars
By Ann Mutschler - 31 Jul, 2020 - Comments: 1

The inclusion of AI chips in automotive and increasingly in avionics has put a spotlight on advanced-node designs that can meet all of the ASIL-D requirements for temperature and stress. How should designers approach this task, particularly when these devices need to last longer than the applications? Semiconductor Engineering sat down to discuss these issues with Kurt Shuler, vice president of... » read more

Next Challenge: Known Good Systems
By Ed Sperling - 07 Jul, 2020 - Comments: 0

The leading edge of design is heading toward multi-die/multi-chiplet architectures, and an increasing number of mainstream designs likely will follow as processing moves closer to the edge. This doesn't mean every chipmaker will be designing leading-edge chips, of course. But more devices will have at least some leading-edge logic or will be connected over some advanced interconnect scheme t... » read more

An Optimal Path To DFT Automation
By Jay Jahangiri - 11 Feb, 2020 - Comments: 0

To keep up with time-to-market demands when SoCs keep increasing in size and complexity requires the adoption of better DFT flows and technologies. One of the most successful changes in design-for-test (DFT) flows in recent years has been the deployment of hierarchical DFT. Taking the divide-and-conquer approach delivers real savings in test time and cost, plus keeps DFT out of the critical pat... » read more

Verification Pilgrims Show A Historical Case For DFT
By Lee Vick - 27 Nov, 2019 - Comments: 0

The Mayflower Steps, where the Pilgrims are believed to have embarked on their journey to America, are located in the beautiful Barbican area of Plymouth, a small town in the southwest of England. As the lone American working for Moortec, a British company based in Plymouth, I stood and stared at them this past September. Separated by a few yards of distance but 399 years of history I found my... » read more

The Great Test Blur
By Ed Sperling - 06 Aug, 2019 - Comments: 0

As chip design and manufacturing shift left and right, concerns over reliability are suddenly front and center. But figuring out what exactly what causes a chip to malfunction, or at least not meet specs for performance and power, is getting much more difficult. There are several converging trends here, each of which plays an integral role in improving reliability. But how significant a role... » read more

BiST Grows Up In Automotive
By Ann Mutschler - 12 Jun, 2019 - Comments: 0

Test concepts and methods that have been used for many years in traditional semiconductor and SoC design are now being leveraged for automotive chips, but they need to be adapted and upgraded to enable monitoring of advanced automotive systems during operation of a vehicle. Automotive and safety critical designs have very high quality, reliability, and safety requirements, which pairs pe... » read more

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