Micro USB is what

Micro USB is a portable version of the USB 2.0 standard, smaller than the mini USB interface used by mobile phones, MICRO-USB is a new generation of MINI-USB specification, USB implementers Forum (USB-IF) Completed on January 4, 2007. MICRO-USB supports OTG, as well as MINI-USB, 5pin. The definition of the Micro series includes Micro-b series slots used by standard devices; Micro-ab slots used by OTG devices; Micro-a and Micro-b plugs, and cable cables. The unique feature of the Micro series is that they contain a stainless steel casing, which is not a problem.

　　Development history

June 2004 including Vodafone, Orange, T-mobile, O2, Spain's Telefonica, Italy Telecom (Telecomitaliamobile) and Japan's NTT DoCoMo and other major global mobile network operators, as well as Nokia, Samsung, Major handset makers such as Motorola, Sony Ericsson and LG have set up an open mobile terminal platform (OPENMOBILETERMINALPLATFORM,OMTP) organization. In September 2007, OMTP unveiled the globally unified mobile phone Charger interface standard for micro USB, the new Micro USB specification supports USB technology on mobile devices such as handsets, and prepares for smaller, more compact portable devices in the future. Mobile phones, MP4, digital cameras and other portable devices can be connected without PC relay, communication. In the future, these manufacturers will be dedicated to the use of mobile phones MICRO USB standards, efforts to make it a unified charging interface for future mobile phones, Micro USB interface allows an interface can be charged, audio and data connections.

On the other hand, the conclusion of this agreement is also the result of the EU's advocacy. The EU's WEEE department has asked handset manufacturers to take responsibility for the waste and pollution caused by the differences in interface, and hopes that a unified interface agreement can reduce this waste. The EU recommends that the new phone in the packaging because people already have micro USB charger relationship, can save the charger. This will not only reduce waste, but also reduce packaging and transport costs. In addition, an interface can be charged and data transmission, can simplify the operation of the user is also a good thing.

　　Features and advantages

MICRO-USB connectors are smaller than standard USB and MINI-USB connectors and space-saving

With up to 10,000 times of plug life and strength

Design of blind interpolation structure

The MICRO-USB standard supports the current OTG functionality of USB, which enables direct data transfer between portable devices without a host (such as a personal computer)

Compatible USB1.1 (Low speed: 1.5mb/s, Full speed: 12mb/s) and USB 2.0 (High speed: 480mb/s)

Simultaneously provides data transmission and charging

Especially suitable for high-speed (HS) or higher speed data transmission, is the best choice for connecting small devices (such as mobile phones, PDAs, digital cameras, digital cameras and portable digital players, etc.).

　　Micro USB Phone Interface

China's formal implementation of the general charger on June 14, 2007, the overall structure of the charger and the interface of the charger is clearly defined, the use of the most widely used USB a interface, can not only solve the general charger, but also can make the mobile phone can easily connect with the computer, realize charging or transmission. The essence of this standard requirement is "USB interface installed in Transformers", and the mobile charger is replaced by a USB cable and a charger with a USB motherboard. Charger Home can no longer be the standard mobile phone configuration, just USB data cable can also be directly charged from the PC interface. There is no standard requirement for the interface on the handset side.

Experts say, because MICRO-USB is equivalent to MINI-USB, whether it is the volume or electrical characteristics and the number of plugs have advantages, therefore, the Micro-usb interface has become mainstream.

At a time when the world is increasingly concerned about environmental protection, in the near future, manufacturers will not be able to sell their mobile phone charger, in order to reduce the excess charger caused by pollution and waste; consumers will not have to change their phones frequently in the future.

　　Micro USB for mobile phone charger standard

Discussion and adoption of the framework standard for the "Universal Mobile terminal and other ICT equipment power adapter and Charger Programme" was completed at the ITU-T Fifth Research Group (SG5) plenary meeting in Geneva, Switzerland, on October 26, 2009, and applications for entry into the approval process were made. This actually means that the global will unify the mobile phone charger standard. It is estimated that the new standard charger can reduce half the energy consumption, and will reduce the waste from 51,000 tons of discarded chargers and 13.6 million tons of greenhouse gas emissions each year. The main thing is that we don't have to have 2 chargers at home and in the office.