ARTIFICIAL NEUROMORPHIC CIRCUIT AND OPERATION METHOD

Artificial neuromorphic circuit includes synapse circuit and post-neuron circuit. Synapse circuit includes phase change element, first switch, and second switch. First switch is coupled to phase change element, and is configured to receive first pulse signal. Second switch is coupled to phase change element. Input terminal of post-neuron circuit is coupled to switch circuit, and input terminal is coupled to phase change element. Input terminal charges capacitor through switch circuit in response to first pulse signal. Post-neuron circuit is configured to generate firing signal based on voltage level at input terminal and threshold voltage, and is further configured to generate first control signal and second control signal based on firing signal. Post-neuron circuit turns off switch circuit according to first control signal. Second control signal is configured to cooperate with second pulse signal to control second switch so as to control a state of phase change element.