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Robust doublet STDP in a floating-gate synapse

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Robust doublet STDP in a floating-gate synapse
นักวิจัย : Gopalakrishnan, Roshan , Basu, Arindam
คำค้น : DRNTU::Engineering::Electrical and electronic engineering::Computer hardware, software and systems
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Gopalakrishnan, R., & Basu, A. (2014). Robust doublet STDP in a floating-gate synapse. 2014 International Joint Conference on Neural Networks (IJCNN), 4296-4301. , http://hdl.handle.net/10220/25141 , http://dx.doi.org/10.1109/IJCNN.2014.6889631
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Learning in a neural network typically happens with the modification or plasticity of synaptic weight. Thus the plasticity rule which modifies the synaptic strength based on the timing difference between the pre- and post-synaptic spike occurrence is termed as Spike Time Dependent Plasticity (STDP). This paper describes the neuromorphic VLSI implementation of a synapse utilizing a single floating-gate (FG) transistor that can be used to store a weight in a nonvolatile manner and demonstrate biological learning rules such as Long-Term Potentiation (LTP), Long-Term Depression (LTD) and STDP. The experimental STDP plot of a FG synapse (change in weight against Δt tpost tpre) from previous studies shows a depression instead of potentiation at some range of positive values of Δt for a wide set of parameters. In this paper, we present a simple solution based on changing control gate waveforms of the FG device that makes the weight change conform closely with biological observations over a wide range of parameters. We show results from a theoretical model to illustrate the effects of the modified waveform. The experimental results from a FG synapse fabricated in AMS 0.35μm CMOS process design are also presented to justify the claim.

บรรณานุกรม :
Gopalakrishnan, Roshan , Basu, Arindam . (2557). Robust doublet STDP in a floating-gate synapse.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Gopalakrishnan, Roshan , Basu, Arindam . 2557. "Robust doublet STDP in a floating-gate synapse".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Gopalakrishnan, Roshan , Basu, Arindam . "Robust doublet STDP in a floating-gate synapse."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Gopalakrishnan, Roshan , Basu, Arindam . Robust doublet STDP in a floating-gate synapse. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.