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Emerging Nonvolatile Memory Technologies in the Future of Microelectronics. [PDF]
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3D-NAND Flash memory and technology
Fifteenth International Symposium on Quality Electronic Design, 2019Solid-state drives (SSDs) have a growing trend of replacing hard disk drives (HDDs) in large computing systems to meet the requirements of power and space. Data in SSD are stored in NAND flash memory cells. Since 2-dimensional (2D) scaling is facing various limitations, 3D-NAND flash memory architectures have been proposed to maintain the trend of bit ...
Chao Sun 0001 +4 more
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3D Charge Trap NAND Flash Memories
ECS Transactions, 2016This chapter starts off with 2 vertical channel architectures named BiCS (Bit Cost Scalable) and P-BiCS (Pipe-Shaped BiCS), respectively. BiCS was proposed for the first time by Toshiba in 2007, and another version called P-BiCS was presented in 2009 to improve retention, source selector performances and source line resistance.
Luca Crippa, Rino Micheloni
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Modeling of Threshold Voltage Distribution in 3D NAND Flash Memory
2021 Design, Automation & Test in Europe Conference & Exhibition (DATE), 20213D NAND flash memory faces unprecedented complicated interference than planar NAND flash memory, resulting in more concern regarding reliability and performance. Stronger error correction code (ECC) and adaptive reading strategies are proposed to improve the reliability and performance taking a threshold voltage (V th ) distribution model as the ...
Weihua Liu +7 more
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Characterization of Inter-Cell Interference in 3D NAND Flash Memory
IEEE Transactions on Circuits and Systems I: Regular Papers, 2021We characterize inter-cell interference in commercial three-dimensional NAND flash memory. By writing random data into 3D NAND and collecting sample means and sample variances of cell values corresponding to a particular set of input values in fixed relative neighboring cell locations, it is shown that the interference coming from any target cell ...
Sukkwang Park, Jaekyun Moon
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2018
Nowadays, Solid State Drives consume an enormous amount of NAND Flash memories [1] causing a restless pressure on increasing the number of stored bits per mm2. Planar memory cells have been scaled for decades by improving process technology, circuit design, programming algorithms [2], and lithography.
Rino Micheloni +2 more
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Nowadays, Solid State Drives consume an enormous amount of NAND Flash memories [1] causing a restless pressure on increasing the number of stored bits per mm2. Planar memory cells have been scaled for decades by improving process technology, circuit design, programming algorithms [2], and lithography.
Rino Micheloni +2 more
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3D Stacked NAND Flash Memories
2016Market request for bigger and cheaper NAND Flash memories triggers continuous research activity for cell size shrinkage. For many years, workarounds for all the scalability issues of planar Flash memories have been found. Some examples are the improved programming algorithms for controlling electrostatic interference between adjacent cells [6], and the
Rino Micheloni, Luca Crippa
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Reliability challenges in 3D NAND Flash memories
2019 IEEE 11th International Memory Workshop (IMW), 2019The reliability of 3D NAND Flash memory technology is depending on many factors. Most of them are related to the process-induced variability of the layers. Endurance, data retention capabilities, and cross-temperature immunity are the metrics that become affected by this, turning in peculiar reliability challenges that are difficult to be tackled ...
Zambelli C., Micheloni R., Olivo P.
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Reliability of 3D NAND Flash Memories
2016In this chapter the main reliability mechanisms affecting 3D NAND memories will be addressed, providing a comparison between 3D FG and 3D CT devices in terms of reliability and expected performances. Starting from an analysis of basic reliability issues related to both physical and architectural aspects affecting NAND memories, the specific physical ...
GROSSI, Alessandro +2 more
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