Spike-based time-domain weighted-sum calculation using nanodevices for low power operation

Takashi Morie, Haichao Liang, Takashi Tohara, Hirofumi Tanaka, Makoto Igarashi, Seiji Samukawa, Kazuhiko Endo, Yasuo Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

This paper introduces a time-domain weighted-sum calculation operation based on a spiking neuron model, and discusses a resistance-capacitance circuit that performs a calculation operation assumed to be realized in CMOS VLSI technology. A nanodevice that executes this calculation is also presented. The calculation circuit is useful for extremely low power operation. This operation uses the rising slopes of post-synaptic potentials triggered by input spike pulses. In the time-domain calculation circuit, the energy dissipation is independent of the resistance, and only depends on the capacitance and voltages. However, the time constant, which is the product of the resistance and capacitance, should be relatively large to guarantee the calculation resolution, and therefore the resistance should be at the giga-ohms levels. The nanodevice consists of a nanodisk array connected with a fin field-effect transistor. Nanodisk arrays can be fabricated using a self-assembly bio-nano-template technique, and they act as resistors with resistance levels of several giga-ohms. A weighted sum can be achieved with an energy dissipation on the order of 1 fJ, with a number of inputs that can be more than 100. This amount of energy is several orders of magnitude lower than that of conventional digital processors.

Original languageEnglish
Title of host publication16th International Conference on Nanotechnology - IEEE NANO 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages390-392
Number of pages3
ISBN (Electronic)9781509039142
DOIs
Publication statusPublished - 2016 Nov 21
Event16th IEEE International Conference on Nanotechnology - IEEE NANO 2016 - Sendai, Japan
Duration: 2016 Aug 222016 Aug 25

Publication series

Name16th International Conference on Nanotechnology - IEEE NANO 2016

Other

Other16th IEEE International Conference on Nanotechnology - IEEE NANO 2016
CountryJapan
CitySendai
Period16/8/2216/8/25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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