Dynamic Logic Circuit with Chaotic Transition Using Switched-Capacitor Chaotic Neuron Circuits

Complex responses, including chaotic responses, were observed through physiological experiments with biological neurons. To include these complex responses, the chaotic neuron model was proposed. Chaotic dynamical systems have been applied to logical systems, and to information and signal processing systems. In this paper, we propose a dynamic logic element with a chaotic transition region using the chaotic neuron model. Logic functions of the proposed element can be dynamically changed through external signals, allowing a single logic element to serve several logic functions. As an illustration, we implement an EXOR logic element with switchedcapacitor circuit techniques implementing chaotic transition responses. In the circuit implementation, we simplify the original 2-neuron circuit into a 1-neuron circuit by employing a simple nonlinear function circuit. From circuit experiments, we confirm the EXOR characteristics and chaotic transition regions of the proposed circuit.