Driving chip, driving method, illuminating circuit and illuminating system

The invention discloses a driving chip, a driving method, an illuminating circuit and an illuminating system. Square wave signals consisting of high level and low level are output to a data processingmodule through a voltage detecting module in the driving chip according to the voltage difference between a chip power end and a chip ground end and reference voltage, the data processing module outputs data code streams to a logic control module according to the duration time of the high level and the low level in the square wave signals, an address module outputs address codes to the logic control module, the logic control module outputs a control signal to an output driving module according to the data code streams and the address codes, and the output driving module outputs pulse signalsdifferent in duty ratio according to the control signal. Illumination change is controlled by receiving power signals, all chips can correctly and effectively identify the power signals in time, the power signals can be identi