CP2112 Debug Board USB to I2C Communication Module
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Prices updated: 12 Oct 2026
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About this product
A debug module built around the CP2112 USB-to-SMBus/I2C bridge chip. It lets a computer communicate with I2C sensors, EEPROMs and other I2C devices over USB, without needing a microcontroller, for testing and debugging.
Specifications
- Bridge chip
- CP2112 (Silicon Labs)
- Host interface
- USB 2.0 full-speed
- Bus interface
- I2C / SMBus
- General-purpose I/O
- 8 GPIO
Frequently asked questions
How do I connect an I2C sensor to the CP2112 module?
Connect SDA, SCL, GND and the sensor supply at the correct voltage. Check whether the module includes pull-up resistors on SDA and SCL; if not, the bus usually needs external pull-ups.
What logic voltage does the module use?
Check the voltage labels on the board before connecting devices, and make sure your sensor's logic level matches the module's I/O voltage to avoid damage.
