1S1R Sub-Threshold Operation in Crossbar Arrays for Neural Networks Hardware Implementation

Joel Minguet Lopez, Manon Dampfhoffer, Tifenn Hirtzlin, Lucas Reganaz, Laurent Grenouillet, Gabriele Navarro, Mathieu Bernard, Thomas Magis, Catherine Carabasse, Niccolo Castellani, Valentina Meli, Elisa Vianello, Damien Deleruyelle, Jean-Michel Portal, Gabriel Molas, François Andrieu

Abstract: This paper presents an outlook of Crossbar memory array capabilities while operated in the sub-threshold regime. By means of experimental data obtained on a RRAM resistive device co-integrated in series with an OTS back-end selector, the pertinence of 1S1R sub-threshold read operation for both standard Binarized Neural Networks (BNNs) and Binarized Spiking Neural Networks (B'SNNs) inference implementation in hardware is elucidated.