Diorio, Chris and Hasler, Paul and Minch, Bradley A. and Mead, Carver A. (1997) A floating-gate MOS learning array with locally computed weight updates. IEEE Transactions on Electron Devices, 44 (12). pp. 2281-2289. ISSN 0018-9383. doi:10.1109/16.644652. https://resolver.caltech.edu/CaltechAUTHORS:20150113-162250820
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Abstract
We have demonstrated on-chip learning in an array of floating-gate MOS synapse transistors. The array comprises one synapse transistor at each node, and normalization circuitry at the row boundaries. The array computes the inner product of a column input vector and a stored weight matrix. The weights are stored as floating-gate charge; they are nonvolatile, but can increase when we apply a row-learn signal. The input and learn signals are digital pulses; column input pulses that are coincident with row-learn pulses cause weight increases at selected synapses. The normalization circuitry forces row synapses to compete for floating-gate charge, bounding the weight values. The array simultaneously exhibits fast computation and slow adaptation: The inner product computes in 10 μs, whereas the weight normalization takes minutes to hours.
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Additional Information: | © 1997 IEEE. Manuscript received February 21, 1997; revised June 19, 1997. The review of this paper was arranged by Editor C.-Y. Lu. This work was supported by the Office of Naval Research, the Advanced Research Projects Agency, the Beckman Hearing Institute, the Center for Neuromorphic Systems Engineering as a part of the National Science Foundation Engineering Research Center Program, and the California Trade and Commerce Agency, Office of Strategic Technology. | ||||||||||||||
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Issue or Number: | 12 | ||||||||||||||
DOI: | 10.1109/16.644652 | ||||||||||||||
Record Number: | CaltechAUTHORS:20150113-162250820 | ||||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150113-162250820 | ||||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||
ID Code: | 53662 | ||||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||||
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Deposited On: | 14 Jan 2015 06:51 | ||||||||||||||
Last Modified: | 10 Nov 2021 20:05 |
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