MRAM Begins To Attract Attention


By Mark LaPedus In the 1980s, there were two separate innovations that changed the landscape in a pair of related fields—nonvolatile memory and storage. In one effort, Toshiba invented the flash memory, thereby leading to NAND and NOR devices. On another front, physicists discovered the giant magnetoresistance (GMR) effect, a technology that forms the basis of hard disk drives, magnetores... » read more

450mm: Out Of Sync


By Mark LaPedus The IC industry has been talking about it for ages, but vendors are finally coming to terms with a monumental shift in the business. The vast changes involve a pending and critical juncture, where the 450mm wafer size transition, new device architectures and other technologies will likely converge at or near the same time. In one possible scenario, 450mm fabs are projected ... » read more

New Approaches To Better Performance And Lower Power


By Ed Sperling Until 90nm, every feature shrink and rev of Moore’s Law included a side benefit of better power and performance. After that, improvements involved everything from different back-end processes to copper interconnects and transistor structures. But from 20nm onward, the future will rest with a combination of new materials, new architectures and new packaging approaches—and som... » read more

Memory Gets Smarter


By Ed Sperling Look inside any complex SoC these days and the wiring congestion around memory is almost astounding. While the number of features on a chip is increasing, they are all built around the same memory modules. Logic needs memory, and in a densely packed semiconductor, the wires that connect the myriad logic blocks are literally all over the memory. This is made worse by the fact ... » read more

3D NAND Market Heats Up


By Mark LaPedus It’s the tale of two promising and separate 3D chip architectures. One technology is slowly taking root, while the other one is heating up. 3D stacked-die using through-silicon vias (TSVs) is on the slower path. Advanced chip-stacking has several challenges and is still a few years away from mass production. In contrast, 3D NAND is heating up, as Samsung and SK Hynix are a... » read more

Foundry Landscape Changes In 3D


By Mark LaPedus Over the last year, leading-edge silicon foundries announced their new and respective strategies in the emerging 2.5D/3D chip arena. The ink is barely dry and now the foundry landscape is changing. One new vendor, Tezzaron Semiconductor, is entering the market. The 3D DRAM supplier plans to provide select 2.5D/3D foundry services within its recently acquired fab in Austin, T... » read more

Mobile Memory Madness


By Mark LaPedus The insatiable thirst for more bandwidth in smartphones, tablets and other devices has prompted an industry standards body to revamp its mobile memory interface roadmap. As part of the changes, the Joint Electron Devices Engineering Council (JEDEC) has scaled back the initial version of Wide I/O technology and pushed out the introduction date of a true 3D stacked architectur... » read more

Thanks For The Memories


By Ed Sperling The amount of real estate in a design now devoted to memories—SRAM on chip, DRAM off chip, and a few other more exotic options showing up occasionally—is a testament to the amount of data that needs to be utilized quickly in both mobile and fixed devices. Memory is almost singlehandedly responsible for the routing congestion now plaguing complex SoCs. It is one of the mai... » read more

Quiet, Steady And Sometimes Unexpected Advances For SOI


By Ed Sperling After years of talking about equivalent pricing, technical advantages and consistent processes, silicon on insulator finally appears to be making significant inroads—but not necessarily in ways, places, or even at process nodes where it initially was predicted to gain ground. What’s driving at least some of this change is the semiconductor industry’s progression toward ... » read more

NAND Enters Tough Cycle


By Mark LaPedus The NAND flash memory market is entering into a new and painful cycle, a period that will impact suppliers, OEMs and fab tool vendors alike. For some time, there has been an oversupply and depressed pricing in the NAND market. In mid-2011, Micron, Samsung, SK Hynix and Toshiba put on the brakes in their capital spending plans. And in recent months, NAND suppliers in total h... » read more

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