USBXpress controller simplifies USB connectivity in small packages

USBExpress bridge devices from Silicon Labs now includes a smaller, lower-power member, the CP2102N.

The bridge adds UB connectivity to new and legacy embedded designs and simplifies USB-to-UART connectivity and speeds time to market for portable, power-sensitive and space-constrained applications such as USB dongles, point-of-sale terminals, data loggers, gaming controllers and personal medical devices.

The USB-to-UART bridge controller is a drop-in solution for adding USB to new designs and for updating existing RS-232 designs to USB, using minimal components and PCB space, says the company. It is based on the company’s architecture that eliminates the need for external crystals, resistors and other external components. The fixed-function bridge device integrates a USB 2.0 full speed controller and UART interface in a single chip.

It is the company’s lowest power USB connectivity device, with operating current of less than 10 mA. Integrated remote wake-up capability and USB battery charger detection allow the device to wake-up a suspended host and to detect the type of charger connected to the system, further reducing bill of materials cost.

The bridge controller is pin- and software-compatible with existing CP210x USB devices, and provides an easy migration to the latest USB-to-UART bridge technology.

Data transfer rates are up to 3Mbaud. Package options are 3.0 x 3.0mm QFN20, 4.0 x 4.0mm QFN24 and 5.0 x 5.0mm QFN28.

Native support for USBXpress bridge devices is included in a new early release of the Simplicity Studio development environment. The Xpress Configurator tool allows developers to configure and program USB-to-UART parameters, generate customisations and take advantage of factory programming options.


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