Shared memristance restoring circuit for memristor-based Cellular Neural Networks

In this paper, a memristance restoring circuit in the memristor-based Cellular Neural Networks (CNNs) is proposed. The proposed restoring circuit of memristance can be shared among many rows of synaptic circuits in CNN array to minimize the area overhead. Assuming 10×10 CNN cell array, if we share the restoring circuit among 10 rows of synaptic circuits in CNN array, the area overhead of the restoring circuit can be reduced to 1/10. The circuit simulation results show that the proposed restoring circuit can reduce the percentage variation in memristance from 21.1% to 0.12% during the restoring cycles.