Time To Revisit 2.5D And 3D


Chipmakers are reaching various and challenging inflection points. In logic, many IC makers face a daunting transition from planar transistors at 20nm to finFETs at 14nm. And on another front, the industry is nearing the memory bandwidth wall. So perhaps it’s time to look at new alternatives. In fact, chipmakers are taking a hard look, or re-examining, one alternative—stacked 2.5D/3D chi... » read more

Where Is 2.5D?


After nearly five years of concentrated research, development, test chips and characterization, 2.5D remains a possibility for many companies but a reality for very few. So what’s taking so long and why hasn’t all of this hype turned into production runs instead of test chips? Semiconductor Engineering spent the past two months interviewing dozens of people on this subject, from chipmakers ... » read more

MEMS Foundries Play Waiting Game


By Mark LaPedus For years, the foundries in the microelectromechanical systems (MEMS) business have been patiently waiting for the MEMS integrated device manufacturers (IDMs) to outsource some or all of their production. The MEMS foundries are still waiting for that development. Because MEMS are custom devices tuned to a proprietary process and toolset, IDMs still prefer to use their own f... » read more

Marching Orders


Reports back from the front lines of Moore’s Law are rather consistent—14nm and 16nm finFETs are do-able, but they’re not easy to design, verify or manufacture. In fact, the only high-volume source of production-proven finFETs at this point is Intel, which is turning them out at 22nm. A number of issues are cropping up at the most advanced nodes, and while each is ultimately solvable, ... » read more

Stacked Die From A Networking Angle


By Mark LaPedus The first wave of 2.5D chips using silicon interposers are trickling out in the marketplace.FPGA vendor Xilinx was the first chipmaker to ship a 2.5D device, and Altera, Cisco, Huawei and IBM recently have talked about their respective 2.5D chip developments. Generally, Altera and Xilinx have taken a somewhat identical and straightforward approach. The two companies are sepa... » read more

3 Ways To Differentiate


Time-to-market pressures and complexity have put the squeeze on design teams. They have to bring incredibly complex SoCs to market on time, make sure they’re functionally correct and work within a tight power budget, and they have to come in on or under budget. Amazingly, they’re still able to accomplish this, thanks to some heroic efforts on the part of engineers and some incredible adv... » read more

New Apps For 3D Chips


By Mark LaPedus Semiconductor Manufacturing and; Design sat down to discuss the 3D device challenges and applications with Peter Ramm, head of the department for device and 3D integration at Fraunhofer EMFT Munich, one of Europe’s largest research organizations. SMD: Fraunhofer was a pioneer in 3D chip R&D, right? Ramm: We are the oldest microelectronics institute in Germany. We st... » read more

Where Does It Hurt?


By Ed Sperling The IC design industry is feeling a new kind of pain—this one driven by uncertainty over architectural shifts, new ecosystem interactions and new ways to account for costs. As mainstream ICs move from 50/45/40nm to around 32/28/22nm, there are only two choices for design teams—continue shrinking features or stack dies. In many cases, the ultimate solution may be a combina... » read more

New Processes Define New Power Plans


By Pallab Chatterjee FinFETs, stacked die, heterogeneous interposers, TSVs, 450mm wafers, new interconnects and everything with MEMs and sensors is what the last few weeks have brought. A number of major announcements, technology releases, conference updates have identified these technologies as the future of IC design. At ISQED, Robert Geer, chief academic officer at the College of Nanosca... » read more

Business First


The move to stacked die poses some interesting technology challenges and promises significant technology benefits, but the real driver is business—and for this market to work, it has to continue being about business. In the past it was technology first, business last. We are now at the stage where it is business first, technology last. Re-use of entire die as subystems, better use of desig... » read more

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