This booklet walks the reader in the course of the subsequent step within the evolution of NAND flash reminiscence expertise, particularly 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 ideas, gadget architectures, fabrication ideas and sensible implementations, and highlights why 3D flash is a new technology.
After reviewing industry developments for either NAND and sturdy kingdom drives (SSDs), the booklet digs into the main points of the flash reminiscence phone 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, every one NAND producer has its personal answer. bankruptcy three to bankruptcy 7 provide a large evaluate of the way 3D can materialize. The 3D wave is impacting rising thoughts in addition and bankruptcy eight covers 3D RRAM (resistive RAM) crosspoint arrays. Visualizing 3D buildings could be a problem for the human mind: this is often method 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 e-book is dedicated to different vital points, corresponding to complicated packaging know-how (i.e. TSV in bankruptcy nine) and blunder 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 offers with the most contemporary developments within the ECC box. final yet now not least, bankruptcy 12 appears to be like at 3D flash stories from a method 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 sufficient for company and datacenter purposes? those are the various questions that this publication is helping answering through offering insights into 3D flash reminiscence layout, approach know-how and applications.
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