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The CP210x is a single-chip USB to UART bridge that converts data traffic between USB and UART formats. 
The chip includes a complete USB 2.0 full-speed function controller, bridge control logic and a UART interface with transmit/receive buffers and modem handshake signals. The device also features on-board EEPROM, a voltage regulator, a USB transceiver and an integrated internal oscillator, eliminating external components generally required in USB applications. System development is further simplified by the Evaluation Kits, which include a complete USB to RS232 evaluation board and royalty-free device drivers for PC, (Windows 98SE/2000/XP), Macintosh and Linux platforms. The USBXpress development kit now includes support for USB to UART devices.
The CP2102 is recommended for all new designs, and is a pin-compatible upgrade to the CP2101. The CP2103 is recommended for designs requiring lower UART voltage, GPIO and RS485.
USB to UART Bridge
 Product matrix
Product documentation
Development Tools
Hardware (as low as $49)
USBXpress development kit
Virtual Com Port (VCP) download
USB to UART Bridge Block Diagram
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