By Rino Micheloni
This booklet walks the reader during the subsequent step within the evolution of NAND flash reminiscence expertise, particularly the advance of 3D flash stories, during which a number of layers of reminiscence cells are grown in the related piece of silicon. It describes their operating ideas, machine architectures, fabrication recommendations and sensible implementations, and highlights why 3D flash is a new technology.
After reviewing marketplace developments for either NAND and sturdy nation drives (SSDs), the publication digs into the main points of the flash reminiscence mobile itself, overlaying either floating gate and rising cost catch applied sciences. there's a plethora of other fabrics and vertical integration schemes available 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 answer. bankruptcy three to bankruptcy 7 supply a vast assessment of ways 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 can be approach a majority of these chapters comprise loads of bird’s-eye perspectives and pass sections alongside the three axes.
The moment a part of the booklet is dedicated to different vital facets, comparable to complicated packaging expertise (i.e. TSV in bankruptcy nine) and blunder correction codes, that have been 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 probably the most contemporary developments within the ECC box. final yet no longer least, bankruptcy 12 appears 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 comparable piece of silicon? Is four bit/cell attainable with 3D? Will 3D be trustworthy adequate for firm and datacenter purposes? those are many of the questions that this ebook is helping answering by means of offering insights into 3D flash reminiscence layout, method expertise and applications.
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Extra info for 3D Flash Memories
3D Flash Memories by Rino Micheloni