{"title":"Thermal Instability Compensation of Synaptic 3D Flash Memory-Based Hardware Neural Networks With Adaptive Read Bias","authors":"Jangsaeng Kim;Jiseong Im;Jong-Ho Lee","doi":"10.1109/LED.2024.3459615","DOIUrl":null,"url":null,"abstract":"Ambient temperature variations caused by extensive operations in hardware neural networks (HNNs) are a critical issue that significantly degrades performance. In this work, HNNs based on synaptic 3D flash memory with high area and energy efficiency are proposed. The impact of ambient temperature on synaptic weights composed of pairs of synaptic devices was investigated. Our proposed thermal instability compensation method using adaptive read bias restores distorted outputs with a low hardware burden. The effective weight modulation with adaptive read bias successfully recovers HNN performance to near baseline even at a high ambient temperature of 100°C.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Electron Device Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10679231/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Ambient temperature variations caused by extensive operations in hardware neural networks (HNNs) are a critical issue that significantly degrades performance. In this work, HNNs based on synaptic 3D flash memory with high area and energy efficiency are proposed. The impact of ambient temperature on synaptic weights composed of pairs of synaptic devices was investigated. Our proposed thermal instability compensation method using adaptive read bias restores distorted outputs with a low hardware burden. The effective weight modulation with adaptive read bias successfully recovers HNN performance to near baseline even at a high ambient temperature of 100°C.
期刊介绍:
IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.