Baby Steps Toward 3D DRAM


Flash memory has made incredible capacity strides thanks to monolithic 3D processing enabled by the stacking of more than 200 layers, which is on its way to 1.000 layers in future generations.[1] But the equally important DRAM has achieved a similar manufacturable 3D architecture. The need for a sufficiently large means of storing charge — such as a capacitor — has proved elusive. Severa... » read more

New Tradeoffs In Leading-Edge Chip Design


Device design begins with the anticipated workload. What is it actually supposed to do? What resources — computational units, memory, sensors — are available? Answering these questions and developing the functional architecture are the first steps in a new design — well before committing it to silicon, said Tim Kogel, senior director of technical product management at Synopsys. Yet eve... » read more

Improving Yield With Machine Learning


Machine learning is becoming increasingly valuable in semiconductor manufacturing, where it is being used to improve yield and throughput. This is especially important in process control, where data sets are noisy. Neural networks can identify patterns that exceed human capability, or perform classification faster. Consequently, they are being deployed across a variety of manufacturing proce... » read more

Week In Review: Design, Low Power


Infineon Technologies acquired Syntronixs Asia, which specializes in precision electroplating, a key process in the assembly process of semiconductors. Syntronixs Asia has a workforce of more than 500 people and has been a major service provider for Infineon since 2009. “Through this acquisition, we have made another important step to strengthen the resilience of our supply chain,” said Tho... » read more

More Errors, More Correction in Memories


As memory bit cells of any type become smaller, bit error rates increase due to lower margins and process variation. This can be dealt with using error correction to account for and correct bit errors, but as more sophisticated error-correction codes (ECC) are used, it requires more silicon area, which in turn drives up the cost. Given this trend, the looming question is whether the cost of ... » read more

Week In Review: Manufacturing, Test


Chipmakers Taiwan’s Foxconn continues to expand its efforts in the semiconductor business. Foxconn has acquired a 6-inch wafer fab and the equipment from Taiwan’s Macronix for NT$2.52 billion (US$90.76 million). With the fab, Foxconn plans to enter the wideband gap semiconductor market, namely silicon carbide (SiC). SiC devices are used in electric vehicles, a market that Foxconn is making... » read more

Week In Review: Manufacturing, Test


Chipmakers Intel has outlined its new process technology roadmap with plans to regain the leadership position in the market. As part of the move, Intel has changed the way it designates the nodes, revealed its new gate-all-around (GAA) transistor, and disclosed a customer for the GAA technology--Qualcomm. And not to be outdone, Intel has broadened its packaging portfolio. Intel is changing ... » read more

Week In Review: Design, Low Power


M&A AMD will acquire Xilinx for $35 billion in an all-stock deal. "Joining together with AMD will help accelerate growth in our data center business and enable us to pursue a broader customer base across more markets,” said Victor Peng, Xilinx president and CEO. The deal is expected to close by the end of 2021. The acquisition of the programmable logic giant will leave only a few purepla... » read more

Manufacturing Bits: May 26


7-level nanosheets The 2020 Symposia on VLSI Technology & Circuits for the first time will be held as a virtual conference. The event, to be held from June 15-18, is organized around the theme “The Next 40 Years of VLSI for Ubiquitous Intelligence.” Among the papers at the event include advanced nanosheet transistors, 3D stacked memory devices and even an artificial iris. At the ... » read more

The Chiplet Race Begins


Momentum is building for the development of advanced packages and systems using so-called chiplets, but the technology faces some challenges in the market. A group led by DARPA, as well as Marvell, zGlue and others are pursuing chiplet technology, which is a different way of integrating multiple dies in a package or system. In fact, the Defense Advanced Research Projects Agency (DARPA), part... » read more

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