By Rino Micheloni
This e-book walks the reader throughout the subsequent step within the evolution of NAND flash reminiscence know-how, specifically the advance of 3D flash thoughts, during which a number of layers of reminiscence cells are grown in the similar piece of silicon. It describes their operating rules, machine architectures, fabrication options and sensible implementations, and highlights why 3D flash is a new technology.
After reviewing marketplace developments for either NAND and good kingdom drives (SSDs), the ebook digs into the main points of the flash reminiscence mobilephone itself, protecting 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 complicated architectures); essentially, each one NAND producer has its personal resolution. bankruptcy three to bankruptcy 7 provide a large evaluation of ways 3D can materialize. The 3D wave is impacting rising thoughts besides and bankruptcy eight covers 3D RRAM (resistive RAM) crosspoint arrays. Visualizing 3D buildings could be a problem for the human mind: this is often manner these kinds of chapters include loads of bird’s-eye perspectives and go sections alongside the three axes.
The moment a part of the e-book is dedicated to different vital elements, reminiscent of complicated 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 newest LDPC codes, whereas bankruptcy eleven offers with one of the most fresh developments within the ECC box. final yet now not least, bankruptcy 12 seems at 3D flash thoughts from a procedure perspective.
Is 14nm the final step for planar cells? Can a hundred layers be built-in in the comparable piece of silicon? Is four bit/cell attainable with 3D? Will 3D be trustworthy adequate for company and datacenter purposes? those are the various questions that this booklet is helping answering via supplying insights into 3D flash reminiscence layout, strategy expertise and applications.
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3D Flash Memories by Rino Micheloni