Artificial neuromorphic circuit and operation method

An operation method of an artificial neuromorphic circuit comprising:

• providing a pre-neuron circuit to emit a first pulse signal and a second pulse signal;
• providing a synapse circuit, wherein the synapse circuit comprises a first switch having at least three terminals, a second switch, and a phase change element, the first switch comprises a first terminal, a second terminal, and a control terminal, the second switch comprises a first terminal, a second terminal, and a control terminal, and the phase change element comprises a first terminal and a second terminal;
• providing a post-neuron circuit, wherein the post-neuron circuit comprises an input terminal and a capacitor;
• receiving the first pulse signal by using the first switch of the synapse circuit;
• receiving the second pulse signal by using the second switch of the synapse circuit;
• charging the capacitor through the input terminal by the post-neuron circuit in response to the first pulse signal;
• generating a firing signal based on a voltage level of the capacitor and a threshold voltage by using the post-neuron circuit;
• generating a control signal based on the firing signal by using the post-neuron circuit;
• after the first pulse signal ends, the voltage of the capacitor in the post-neuron gradually discharged and returns to the equilibrium value;
• and
• controlling a current of the second switch of the synapse circuit based on the control signal and the second pulse signal to control a state of the phase change element of the synapse circuit so as to determine a weight of the artificial neuromorphic circuit.