Artificial neuromorphic circuit and operation method

An artificial neuromorphic circuit comprising:

• a synapse circuit comprising a phase change element and being configured to receive a first pulse signal and a second pulse signal;
• and
• a post-neuron circuit coupled to the synapse circuit, wherein the post-neuron circuit comprises an input terminal, an output terminal, and an integration terminal, wherein the integration terminal being charged to a membrane potential according to the first pulse signal, wherein the post-neuron circuit further comprises:
• a first control circuit coupled between the integration terminal and the output terminal, the first control circuit being configured to generate a firing signal at the output terminal based on the membrane potential;
• a second control circuit coupled to the output terminal, the second control circuit being configured to generate a first control signal based on the firing signal;
• a first delay circuit configured to delay the firing signal to generate a second control signal;
• and
• a second delay circuit configured to delay the second control signal to generate a third control signal;
• wherein the first control signal and the third control signal are configured to control a voltage level of the integration terminal and maintain the integration terminal at a fixed voltage during a period, and the second control signal is configured to cooperate with the second pulse signal to control a state of the phase change element so as to determine a weight of the artificial neuromorphic circuit.