INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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SPICE modeling of memristors with multilevel resistance states |
Fang Xu-Dong (方旭东)a, Tang Yu-Hua (唐玉华)b, Wu Jun-Jie (吴俊杰)a |
a National Laboratory for Parallel and Distributed Processing, School of Computer, National University of Defense Technology, Changsha 410073, China; b Department of Computer Science and Technology, School of Computer, National University of Defense Technology, Changsha 410073, China |
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Abstract With CMOS technologies approaching the scaling ceiling, novel memory technologies have thrived in recent years, among which the memristor is a rather promising candidate for future resistive memory (RRAM). Memristor's potential to store multiple bits of information as different resistance levels allows its application in multilevel cell (MCL) technology, which can significantly increase the memory capacity. However, most existing memristor models are built for binary or continuous memristance switching. In this paper, we propose the simulation program with integrated circuits emphasis (SPICE) modeling of charge-controlled and flux-controlled memristors with multilevel resistance states based on the memristance versus state map. In our model, the memristance switches abruptly between neighboring resistance states. The proposed model allows users to easily set the number of the resistance levels as parameters, and provides the predicability of resistance switching time if the input current/voltage waveform is given. The functionality of our models has been validated in HSPICE. The models can be used in multilevel RRAM modeling as well as in artificial neural network simulations.
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Received: 30 December 2011
Revised: 08 March 2012
Accepted manuscript online:
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PACS:
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89.20.Ff
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(Computer science and technology)
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85.40.Bh
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(Computer-aided design of microcircuits; layout and modeling)
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85.35.-p
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(Nanoelectronic devices)
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84.32.-y
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(Passive circuit components)
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Fund: Project supported by the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (Grant No. 60921062) and the National Natural Science Foundation of China (Grant No. 61003075). |
Corresponding Authors:
Fang Xu-Dong
E-mail: fangxudong850403@gmail.com
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Cite this article:
Fang Xu-Dong (方旭东), Tang Yu-Hua (唐玉华), Wu Jun-Jie (吴俊杰) SPICE modeling of memristors with multilevel resistance states 2012 Chin. Phys. B 21 098901
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