Design of Non-Volatile Synapse Array and Neuron Circuits

Traditional neuromorphic chips generally use SRAM array to store the synaptic weights, which would lose data once power down. And the SRAM array can only be accessed through a single address decoding, which is not suitable for synaptic weights update. In this paper, a non-volatile synapse array and neuronal circuits based on 40 nm process combining with embedded phase change memory (ePCM) are proposed. This work would provide an effective, high-speed and low-power solution to store and update the neuron synaptic weights.