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arXiv · 2305.16418

Optimizations for a Current-Controlled Memristor-based Neuromorphic Synapse Design

Hritom Das·Rocco D. Febbo·Charlie P. Rizzo·Nishith N. Chakraborty·James S. Plank·Garrett S. Rose
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Abstract

The synapse is a key element of neuromorphic computing in terms of efficiency and accuracy. In this paper, an optimized current-controlled memristive synapse circuit is proposed. Our proposed synapse demonstrates reliability in the face of process variation and the inherent stochastic behavior of memristors. Up to an 82% energy optimization can be seen during the SET operation over prior work. In addition, the READ process shows up to 54% energy savings. Our current-controlled approach also provides more reliable programming over traditional programming methods. This design is demonstrated with a 4-bit memory precision configuration. Using a spiking neural network (SNN), a neuromorphic application analysis was performed with this precision configuration. Our optimized design showed up to 82% improvement in control applications and a 2.7x improvement in classification applications compared with other design cases.

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Hritom Das, Rocco D. Febbo, Charlie P. Rizzo, Nishith N. Chakraborty, James S. Plank, Garrett S. Rose. 2023-05-25. Optimizations for a Current-Controlled Memristor-based Neuromorphic Synapse Design. https://doi.org/10.1109/jetcas.2023.3312163

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