In the world of IC testability we tend to look at various approaches as independent means to an end, namely high test coverage with the minimum amount of test time, minimum area impact, minimum timing impact, and acceptable power use. Automatic Test Pattern Generation (ATPG) is a software-based approach that can be applied to any… Read More




Verifying Hardware at the C-level
As more people adopt high-level synthesis (HLS) they start to worry about what is the best design flow to be using. This is especially so for verification since it forms such a large part of the effort on a modern SoC. The more people rely on HLS for producing their RTL from C, the more they realize they had better do a good job of verifying… Read More
TSMC OIP: Soft Error Rate Analysis
Increasingly, end users in some markets are requiring soft error rate (SER) data. This is a measure of how resistant the design (library, chip, system) is to single event effects (SEE). These manifest themselves as SEU (upset), SET (transient), SEL (latch-up), SEFI (functional interrupt).
There are two main sources that cause… Read More
Rapid Yield Optimization at 22nm Through Virtual Fab
Remember? During DAC2013 I talked about a new kind of innovation: A Virtual Fabrication Platform, SEMulator3D, developed by COVENTOR. Now, to my pleasant surprise, there is something to report on the proven results from this platform. IBM, in association with COVENTOR, has successfully implemented a 3D Virtual Fabrication… Read More
Searching an ADC (or DAC) at 28 nm may be such a burden…
If you have ever send a Request For Quotation (RFQ) for an ASIC including processor IP core, memories, Interfaces IP like PCIe, SATA or USB and Analog function like Analog to Digital Converter (ADC) or Digital to Analog Converter (DAC), you have discovered, like I did a couple of years ago, that these Analog functions may be the key… Read More
Test Compression and Hierarchy at ITC
The International Test Conference (ITC) is this week in Anaheim and I’ve just learned what’s new at Synopsys with test compression and hierarchy. Last week I spoke with Robert Ruiz and Sandeep Kaushik of Synopsys by phone to get the latest scoop. There are two big product announcements today that cover:… Read More
SemiWiki Analytics Exposed 2013
One of the benefits of blogging is that you put a stake in the ground to look back on and see how how things have changed over the years. You can also keep a win/loss record of your opinions, observations, and experiences. Last year I posted the “SemiWiki Analytics Exposed 2012” blog so here is a follow-up to that.
The Semiconductor Wiki… Read More
Xilinx At 28nm: Keeping Power Down
Almost without exception these days, semiconductor products face strict power and thermal budgets. Of course there are many issues with dynamic power but one big area that has been getting increasingly problematic is static power. For various technical reasons we can no longer reduce the voltage as much as we would like from one… Read More
Asian Embargoes
[This blog embargoed until 10am China time]
An interesting thing happened to me this week. I had two press briefings. No, that wasn’t the interesting thing and if you have sat through a press briefing you will not regard them as recreation. I do it for you, Semiwiki readers. Even though, as this week, the briefings are given … Read More
SpyGlass: Focusing on Test
For decades we have used a model of faults in chips that assumes that a given signal is stuck-at-0 or stuck-at-1. And when I say decades, I mean it. The D-algorithm was invented at IBM in 1966, the year after Gordon Moore made a now very famous observation about the number of transistors on an integrated circuit. We know that stuck-at… Read More
TSMC N3 Process Technology Wiki