CP2104-F03-GM: Overview,Specifications,Main uses,Features,application fields,working principle and alternative models


CP2104-F03-GM Overview:

The CP2104-F03-GM is a USB-to-UART bridge controller chip manufactured by Silicon Labs. This integrated circuit allows for easy interfacing between a USB port on a computer or other device and a UART serial communication port. Here's an overview, specifications, main uses, features, application fields, working principle, and alternative models of the CP2104-F03-GM:



  • Manufacturer: Silicon Labs
  • Type: USB-to-UART Bridge Controller
  • Package: QFN (Quad Flat No-leads)
  • Data Transfer Rate: Up to 3 Mbps
  • Operating Voltage: Typically 3.3V or 5V
  • Interface: USB 2.0 Full Speed (12 Mbps)
  • GPIOs: Typically includes general-purpose input/output pins
  • DataSheet

    CP2104-F03-GM PDF

Main Uses:

  • USB to UART Conversion: Facilitates communication between devices using USB and UART interfaces.
  • Serial Communication: Enables serial data transfer between a host system and a target device.
  • Programmable Interfaces: Used for programming and debugging microcontrollers and embedded systems.
  • Peripheral Communication: Interfaces with various peripherals such as sensors, displays, and other devices.


  • UART Interface: Provides a simple way to connect UART devices to a USB port.
  • Integrated EEPROM: Allows for customization and device configuration storage.
  • On-Chip Voltage Regulator: Provides stable operation across various voltage levels.
  • UART RX/TX LEDs: Some models feature LEDs to indicate data transmission.
  • Supports Multiple Operating Systems: Compatible with Windows, macOS, and various Linux distributions.

Application Fields:

  • Embedded Systems: Used in programming and debugging microcontrollers and other embedded devices.
  • Industrial Automation: Facilitates communication with industrial equipment and sensors.
  • Consumer Electronics: Integrated into various consumer devices for data exchange and configuration.
  • IoT Devices: Enables communication in Internet of Things applications.

Working Principle:

  • The CP2104-F03-GM bridges the gap between USB and UART protocols, handling data conversions and communications.
  • It manages the USB data transfer process and translates the data to a format compatible with UART communication.
  • The UART interface allows asynchronous serial communication between the host system and the connected device.

Alternative Models:

  • CP2102: An earlier version with similar features but potentially different specifications.
  • FTDI FT230X: Another popular USB-to-UART bridge controller with comparable functionality.
  • PL2303HX: An alternative chip for USB-to-serial communication.


  • The CP2104-F03-GM is a reliable solution for USB-to-UART interfacing, commonly used in embedded systems and various electronic applications.
  • When choosing an alternative model, consider factors such as compatibility, data transfer rates, and specific feature requirements for your application.

The CP2104-F03-GM USB-to-UART bridge controller from Silicon Labs offers a convenient and efficient solution for connecting UART devices to USB-enabled systems, suitable for a wide range of applications in embedded systems, industrial automation, consumer electronics, and IoT devices.