By Rino Micheloni
This e-book walks the reader in the course of the subsequent step within the evolution of NAND flash reminiscence know-how, specifically the improvement of 3D flash thoughts, during which a number of layers of reminiscence cells are grown in the comparable piece of silicon. It describes their operating ideas, gadget architectures, fabrication concepts and useful implementations, and highlights why 3D flash is a new technology.
After reviewing marketplace developments for either NAND and stable nation drives (SSDs), the e-book digs into the main points of the flash reminiscence mobile itself, overlaying either floating gate and rising cost seize applied sciences. there's a plethora of alternative fabrics and vertical integration schemes in the market. New reminiscence cells, new fabrics, new architectures (3D Stacked, BiCS and P-BiCS, 3D FG, 3D VG, 3D complex architectures); essentially, each one NAND producer has its personal resolution. bankruptcy three to bankruptcy 7 provide a large review of the way 3D can materialize. The 3D wave is impacting rising thoughts to boot and bankruptcy eight covers 3D RRAM (resistive RAM) crosspoint arrays. Visualizing 3D constructions could be a problem for the human mind: this is often manner a majority of these chapters include loads of bird’s-eye perspectives and move sections alongside the three axes.
The moment a part of the booklet is dedicated to different vital features, resembling complex packaging expertise (i.e. TSV in bankruptcy nine) and mistake correction codes, which were leveraged to enhance flash reliability for decades. bankruptcy 10 describes the evolution from legacy BCH to the latest LDPC codes, whereas bankruptcy eleven bargains with essentially the most contemporary developments within the ECC box. final yet no longer least, bankruptcy 12 seems at 3D flash stories from a approach perspective.
Is 14nm the final step for planar cells? Can a hundred layers be built-in in the similar piece of silicon? Is four bit/cell attainable with 3D? Will 3D be trustworthy adequate for firm and datacenter functions? those are many of the questions that this e-book is helping answering through offering insights into 3D flash reminiscence layout, procedure know-how and applications.
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3D Flash Memories by Rino Micheloni