Self-timed SLC NAND pipeline and concurrent program without verification
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United States of America Patent
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May 30, 2017
Grant Date -
Mar 31, 2016
app pub date -
Sep 18, 2015
filing date -
Sep 28, 2014
priority date (Note) -
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Abstract
A hierarchical-GBL/LBL NAND array with a plurality of LG and MG groups in either orthogonal BL/CSL scheme or parallel BL/SL scheme including a plurality of block-decoders with a shared self-timed delay control circuit and a plurality of fully-shielding dynamic CACHE registers made of 2 local broken metal lines within the array and DRAM-like SA is provided. Each DCR capacitor is flexibly expandable by connecting multiple CLGs made by the local broken metal lines of the LGs to form a CMG of a larger MG. Based on the NAND array, multiple randomly selected WLs in multiple random blocks within multiple random LGs within one MG can be selected on basis of one WL per block per LG for performing an ABL pipeline and concurrent SLC program without verification, and on basis of one WL per block per MG for performing an ABL-like or HBL pipeline and concurrent SLC read.
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