CP2105-F01-GMR Dual UART to USB Bridge Controller (QFN-24)

Streamline your hardware debugging and drastically reduce your PCB footprint with the CP2105-F01-GMR Dual UART to USB Bridge. While standard chips like the CP2102 or CH340 provide a single serial connection, this powerful Silicon Labs IC gives you two independent UART channels (one Standard, one Enhanced) from a single USB port. This is an absolute game-changer for drone diagnostics, robotics, and custom development boards where you need to communicate with a Flight Controller on one port and configure a GPS, VTX, or Telemetry module on the other simultaneously.

The CP2105 is highly integrated, featuring a built-in USB 2.0 full-speed transceiver, integrated clock oscillator (no external crystal required), and an internal voltage regulator. This minimalist external component requirement, combined with its ultra-compact 4x4 mm QFN-24 package, makes it the ultimate choice for space-constrained diagnostic dongles and professional DIY electronics. Additionally, it features programmable GPIO pins that can be used for controlling LEDs or resetting microcontrollers (like ESP32/ESP8266) into bootloader mode.

Key Features:

• Two-for-One Efficiency: Enumerates as two separate COM ports on your PC from a single USB connection, allowing simultaneous dual-device communication.

• High Integration: Requires no external crystal oscillator or EEPROM, vastly simplifying circuit design and saving precious PCB space.

• High-Speed Data: The Enhanced channel supports baud rates up to 2 Mbps, perfect for high-frequency Blackbox data dumping or flashing firmwares quickly.

• Built-in GPIO: Features accessible GPIO pins that are commonly used to trigger the BOOT/EN pins on ESP-based microcontrollers for auto-programming.

Specifications:

• Part Number: CP2105-F01-GMR

• IC Type: Single-Chip USB to Dual UART Bridge

• Interfaces: 1x Enhanced UART (up to 2 Mbps), 1x Standard UART (up to 921 kbps)

• USB Standard: USB 2.0 Full-Speed

• Operating Voltage: 3.0V – 3.6V (with 5V-tolerant inputs)

• Package Type: QFN-24 (4x4 mm, SMD/SMT)