Universal serial bus interface circuit, electronic device including the same, and operating method thereof

Abstract

A universal serial bus (USB) interface circuit, an electronic device including the USB interface circuit, and an operating method of the electronic device are disclosed. The electronic device includes a connector including a plurality of pins, a wake-up circuit that generates a pre-dual role port (DRP) signal based on a first internal clock signal in response to a first enable signal and generates a wake-up signal based on a configuration channel (CC) signal generated at one or more CC pins of the connector, the first enable signal, the pre-DRP signal, and the first internal clock signal, a USB circuit that generates the first enable signal while the connector and an external connector are disconnected from each other and generates a second enable signal in response to the wake-up signal, and an overvoltage protection circuit that is activated in response to a second enable signal.