Mult-interface auto-switch circuit and memory device with dual interface auto-switch circuit

摘要

This invention is related to a multi-interface auto-switch circuit which can be implanted in a memory device. This memory device can use either the first interface or the second interface to communicate with an external device. The multi-interface auto-switch circuit comprises a power detecting and supplying module and an interface switch circuit. The power detecting and supplying module detects and receives the voltage signal from the external device and generates a corresponding electrical signal. The interface switch circuit, which connects to the power detecting and supplying module, receives the corresponding electrical signal and is controlled to connect either the first or the second interface with the external device according to the corresponding electrical signal.