With the rapid adoption of USB in embedded designs, developers are seeking faster, economical ways to add USB connectivity to their applications. Silicon Labs’ highly integrated CP2102N USB-to-UART bridge controller provides a simple, drop-in solution for adding USB to new designs and also for updating existing RS-232 designs to USB using minimal components and printed circuit board (PCB) space. Based on Silicon Labs’ proven architecture that eliminates the need for costly 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 solution that helps reduce bill of materials (BOM) cost for space-constrained applications.
The CP2102N device is Silicon Labs’ lowest power USB connectivity solution, delivering a low operating current of <10 mA and extending battery life for power-sensitive applications. Advanced, integrated features such as a 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 BOM cost.
The CP2102N bridge controller eliminates the need for USB protocol expertise or time-consuming firmware and driver development, enabling developers to focus their time and resources on their end applications. Pin- and software-compatible with Silicon Labs’ existing CP210x USB devices, the CP2102N provides an easy migration to the latest USB-to-UART bridge technology. These fixed-function devices are ideal for embedded designs that require USB connectivity with minimal development effort or for any application that needs to be upgraded to USB from legacy serial interfaces such as UART.
CP2102N USBXpress provides data transfer rates up to 3 Mbaud and a low active current of <10 mA with remote wake-up capability to wake up a suspended host device. It also features USB battery charger detection capability (USB BCS 1.2 specification) to detect the type of charger connected to the system, crystal-less operation and integrated regulator to reduce BOM cost, and royalty-free Virtual COM port drivers, including also easy-to-use software development tools including Xpress Configurator and Simplicity Studio Tools. The devices are available in 3 mm x 3 mm QFN20, 4 mm x 4 mm QFN24 and 5 mm x 5 mm QFN28 package options.
To further speed development, Silicon Labs supports the CP2102N USB bridge controller with the CP2102N-EK evaluation kit, which includes an integrated debugger for configuration, headers for easy access to GPIOs and UART, battery charger detection pins and a remote wake-up pushbutton.