Abstract
In this paper, we study the implementation of a SiO x ReRAM an artificial spiking neuron network (SNN) as a memristive synapse. The analog switching SiO x based resistive random access memory (ReRAM) uses room temperature process and switches at sub 1.2V, suitable for BEOL integration. We analyze the neuron circuit speed impact from ReRAM switching, supply voltage and power consumption. With an single industry I/O voltage of +1.8V besides necessary negative supply for bipolar signal generation, and by co-optimizing the neuron circuit in the region of μs, the operating speed can be 3 orders faster than existing reported SNN circuit. In addition, we show that the ReRAM switching time poses the speed bottleneck for the SNN circuit. In order to further enhance the SNN operating speed, improvement to the ReRAM switching time is needed, or the need to increase the voltage supply but at the expense of power consumption.
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