Micro Usb Pin Assignment

Developed by Qualcomm, it aims to charge batteries in a way that is more energy efficient than ordinary trickle-charge setups. “It is difficult for suppliers of USB connectors to differentiate themselves,” says CUI Inc. “One way we compete is by providing a broader range of mounting options, including a water-proof version we have in the works.” However, one differentiating feature that USB specifiers should indeed watch out for are connector markings that indicate certification, says Carroll.

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The 3.0 spec boosted handling power because USB 2.0’s limit of 500 m A at 5 V had become problematic for charging small electronics.

Now USB 3.0 can provide 900 m A at 5V while USB 3.1 delivers more when paired with a Type-C cable, capable of delivering 5 A at 20 V.

Micro USB has been superseded by USB Type C on many new products.

See Mini USB, USB Type C, USB 3.0, USB OTG and USB.

The very small USB port found on many non-Apple cellphones, tablets and other portable devices is a Micro USB socket.

Considerably smaller than USB Type A and B, Micro USB is also half the thickness of Mini USB (see illustration below).The USB connectors also operate over -25 to 85°C and have Ro HS compliance.One reason USB 3.0 is becoming widely used is its capability for handling power.USB 3.1 also provides backward compatibility with USB 2.0 by means of a dual-bus architecture: One bus is a USB 2.0 bus while the other is an Enhanced Super Speed bus.The USB 3.1 spec uses the term Enhanced Super Speed as a generic adjective referring to any valid collection of USB features that were defined for the bus that runs in parallel to the USB 2.0 bus in a USB 3.1 system.The current version of the standard, USB 3.1, extends the performance range to 1 GB/sec.Another point to note about speed is that USB 3.0 ushered in “Super Speed” 5 Gbps, and the USB 3.1 maximum rate of 10 Gbps is called “Super Speed Plus.” USB 3.1 peripherals share bandwidth through a protocol that lets peripherals be attached, configured, used, and detached while the host and other peripherals are in operation.It incorporates the standard USB comm signals plus two additional wire pairs for extra power.The Powered B male plug is only available hard-wired to devices that specifically support it.Only products that pass have the right to license the USB-IF Logo.A noteworthy point about the USB type C spec is that the connectors are reversible; flip one upside down and it will still fit in a type C socket and function just fine.


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