MiniUSB, also known as mini USB, is a USB interface standard. USB is the abbreviation of Universal SerialBUS in English, and the Chinese meaning is "universal serial bus". It is a technology developed for data transmission between PC and digital devices. Standard USB, MiniUSB, MicroUSB become the most common USB interface. Compared to standard USB, MiniUSB is smaller and suitable for small electronic devices such as mobile devices.
1 VBUS (4.4–5.25V)
2 D−
3D+
4 ID
5 Ground
The id foot is only used in the otg function. Because the mini usb interface is divided into mini-A, B and AB interfaces. If your system is only used as a slave, then use the B interface. The system controller will judge the level of the ID pin to determine what kind of equipment is inserted. If it is high level, it is the B connector inserted. At this time, the system will do Mode, if the ID is low, the A interface is inserted, and then the system will use the HNP dialogue protocol to decide which is the master and which is the slave.
OTG is the abbreviation of On-The-Go, that is, OTG technology is to realize data transmission between slave devices without a Host. It is mainly used in the connection between various devices or mobile devices for data exchange. For example, the digital camera is directly connected to the printer, and the USB port between the two devices is connected through OTG technology, and the photos taken are printed immediately; the data in the digital camera can also be sent to the mobile hard disk with the USB interface through OTG. , there is no need to carry expensive memory cards or carry a portable computer for field operations.
The MiniUSB interface is contaminated with dust, which will burn the device. Please check whether the interface is clean when using it.