Optimization of read operation for low power consumption in 3D NAND flash memory

IF 2.6 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Microelectronic Engineering Pub Date : 2025-02-20 DOI:10.1016/j.mee.2025.112324

Jesun Park , Seongwoo Kim , Taeyoung Cho , Myounggon Kang

引用次数: 0

Abstract

This study proposes a low power read operation to minimize the hot carrier injection (HCI) phenomenon that occurs during read operations in 3D NAND Flash Memory. Owing to the characteristics of the 3D NAND Flash Memory structure, the channels of unselected strings can easily remain in a floating state. This leads to HCI during read operations, resulting in read disturbances. To improve the read disturb characteristics, triangular pulse voltages (V_TP) with adjusted slopes and delayed application times were applied to the string selected line (SSL) and the ground selected line (GSL) during read operations. Using the proposed read scheme, it was confirmed that HCI was decreased compared to the conventional method, and it was possible to operate at low power.

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3D NAND快闪记忆体低功耗读取操作之优化

本研究提出了一种低功耗读取操作，以最大限度地减少3D NAND闪存读取操作过程中发生的热载流子注入（HCI）现象。由于3D NAND闪存结构的特性，未选择串的通道很容易保持在浮动状态。这将导致读操作期间的HCI，从而导致读干扰。为了改善读干扰特性，在读操作过程中，对串选线（SSL）和地选线（GSL）施加可调整斜率和延迟施加时间的三角形脉冲电压（VTP）。采用所提出的读取方案，与传统方法相比，HCI降低了，并且可以在低功耗下工作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Microelectronic Engineering 工程技术-工程：电子与电气

CiteScore

5.30

自引率

4.30%

发文量

131

审稿时长

29 days

期刊介绍： Microelectronic Engineering is the premier nanoprocessing, and nanotechnology journal focusing on fabrication of electronic, photonic, bioelectronic, electromechanic and fluidic devices and systems, and their applications in the broad areas of electronics, photonics, energy, life sciences, and environment. It covers also the expanding interdisciplinary field of "more than Moore" and "beyond Moore" integrated nanoelectronics / photonics and micro-/nano-/bio-systems. Through its unique mixture of peer-reviewed articles, reviews, accelerated publications, short and Technical notes, and the latest research news on key developments, Microelectronic Engineering provides comprehensive coverage of this exciting, interdisciplinary and dynamic new field for researchers in academia and professionals in industry.