Voltage-Controlled Spin-Orbit-Torque-Based Nonvolatile Flip-Flop Designs for Ultra-Low-Power Applications
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Published:2023-10-15
Issue:20
Volume:13
Page:11316
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ISSN:2076-3417
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Container-title:Applied Sciences
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language:en
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Short-container-title:Applied Sciences
Author:
Liu Xiao1, Deng Erya2, Luo Lichuan1, Jiang Linjun3, Zhang Youguang1, Liu Dijun1, Pan Biao3, Kang Wang3
Affiliation:
1. School of Electronic and Information Engineering, Beihang University, Beijing 100191, China 2. College of Electronic Information and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China 3. School of Integrated Circuit Science and Engineering, Fert Beijing Institute, Beihang University, Beijing 100191, China
Abstract
Flip-flop (FF) serves as a fundamental unit in various sequential logic circuits and complex digital electronic systems for generating, transforming, and temporarily storing digital signals. Nonvolatility plays a crucial role in FFs by ensuring instant data recovery after unexpected data loss. Nonvolatile flip-flop can quickly recover in a self-powered environment, making it suitable for application environments such as the Internet of Things (IOT). Unfortunately, most existing nonvolatile FFs (NVFFs) suffer from extended delays and high energy consumption during data backup and restore operations. In this paper, we propose two innovative voltage-controlled nonvolatile FFs (VC-FFs), namely VC-DFF (voltage-controlled D-FF) and VC-SRFF (voltage-controlled SR-FF), which address these challenges using voltage-controlled spin-orbit torque (VC-SOT) devices. The proposed designs are evaluated using a 40 nm CMOS process. Simulation results demonstrate that the proposed designs achieve significant improvements in write (recovery) energy consumption, with over 7.2× (1.54×) and 18.7× (2×) enhancements compared to their STT- and SOT-based counterparts, respectively.
Funder
National Natural Science Foundation of China Beijing Nova Program from Beijing Municipal Science and Technology Commission Beijing Natural Science Foundation Fundamental Research Funds for the Central Universities Laboratory Open Fund of Beijing Smart-chip Microelectronics Technology Co., Ltd.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference24 articles.
1. Energy Scavenging from Low-Frequency Vibrations by Using Frequency Up-Conversion for Wireless Sensor Applications;Kulah;IEEE Sens. J.,2008 2. Pan, C., Xie, M., Liu, Y., Wang, Y., Xue, C.J., Wang, Y., Chen, Y., and Hu, J. (2017, January 21–22). A lightweight progress maximization scheduler for non-volatile processor under unstable energy harvesting. Proceedings of the LCTES ‘17: SIGPLAN/SIGBED Conference on Languages, Compilers and Tools for Embedded Systems, Barcelona, Spain. 3. Zheng, J., Zeng, Z., and Zhu, Y. (2017, January 16–19). Memristor-based nonvolatile synchronous flip-flop circuits. Proceedings of the International Conference on Information Science and Technology (ICIST), Da Nang, Vietnam. 4. Energy/Reliability Trade-Offs in Low-Voltage ReRAM-Based Non-Volatile Flip-Flop Design;Kazi;IEEE Trans. Circuits Syst. I Regul. Pap.,2014 5. Robust Ultra-Low Power Non-Volatile Logic-in-Memory Circuits in FD-SOI Technology;Cai;IEEE Trans. Circuits Syst. I Regul. Pap.,2017
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