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arXiv · 2007.08659

Spin-Hall MTJ Cells for Intra-Column Competition in Hierarchical Temporal Memory

Andrew W. Stephan·Steven J. Koester
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Abstract

We propose a dedicated winner-take-all circuit to efficiently implement the intra-column competition between cells in Hierarchical Temporal Memory which is a crucial part of the algorithm. All inputs and outputs are charge-based for compatibility with standard CMOS. The circuit incorporates memristors for competitive advantage to emulate a column with a cell in a predictive state. The circuit can also detect columns 'bursting' by passive averaging and comparison of the cell outputs. The proposed spintronic devices and circuit are thoroughly described and a series of simulations are used to predict the performance. The simulations indicate that the circuit can complete a nine-cell, nine-input competition operation in under 15 ns at a cost of about 25 pJ.

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Andrew W. Stephan, Steven J. Koester. 2020-07-16. Spin-Hall MTJ Cells for Intra-Column Competition in Hierarchical Temporal Memory. https://arxiv.org/abs/2007.08659

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