Slave device for synchronous communication, synchronous communication system and electronic device

The invention discloses slave equipment for synchronous communication, a synchronous communication system and electronic equipment, and belongs to the technical field of communication. The slave device for synchronous communication comprises an interface module for performing signal transmission with a master device for synchronous communication, and an energy-saving control circuit connected with the interface module, wherein under the condition that the interface module receives a clock signal, the clock signal is transmitted to the energy-saving control circuit; the clock signal comprises a trigger signal transmitted before the interface module receives a data signal; and the energy-saving control circuit controls the working voltage of the synchronous communication slave device to be powered on after receiving the trigger signal, and controls the working voltage to be powered off after the clock signal is stopped. 本申请公开了一种同步通信的从设备、同步通信系统和电子设备，属于通信技术领域。所述同步通信的从设备包括：与同步通信的主设备进行信号传输的接口模块，以及，与所述接口模块连接的节能控制电路；