The default I2C address is 0x62.

Power Pins

The sensor on the breakout requires between a 2.7V and 5.5V, and can be easily used with most microcontrollers from an Arduino to a Feather or something else.

  • VIN - this is the power pin.  To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V micro like Arduino, use 5V
  • GND - common ground for power and logic

I2C Logic Pins

  • SCL - I2C clock pin, connect to your microcontroller's I2C clock line. This pin is level shifted so you can use 3-5V logic, and there's a 10K pullup on this pin.
  • SDA -I2C data pin, connect to your microcontroller's I2C data line. This pin is level shifted so you can use 3-5V logic, and there's a 10K pullup on this pin.
  • STEMMA QT - These connectors allow you to connect to development boards with STEMMA QT connectors, or to other things, with various associated accessories.

Other Pins

  • A0 pin / ADDR jumper - Tie A0 high, or close the jumper on the back to change the I2C address to 0x63, so you can connect two MCP4725 breakouts on the same I2C bus.
  • VOUT - This is the output pin for the I2C signal.
  • Optional terminal block - There is an optional 3.5mm terminal block spot on the board that breaks out VOUT and GND. You can solder a terminal block on if you like. The terminal block does not come with the board, but they are common and you can purchase one from the Adafruit shop.

This guide was first published on Sep 05, 2012. It was last updated on 2022-02-09 17:42:38 -0500.

This page (Pinouts) was last updated on May 26, 2022.

Text editor powered by tinymce.