The present disclosure relates to a method of communication via serial bus, comprising: the conveyance by the serial bus of a frame comprising at least two consecutive cycles of a dominant state followed by a recessive state, the recessive states and dominant states having durations comprised between 2 and 5 times the duration of a data bit conveyed by the serial bus, and preferably above 1.8 μs; and the detection by one or more circuits coupled to the serial bus of at least a part of the frame for triggering the passage from a sleep state to a wake state of the one or more circuits.