This chip is good for use with power and logic voltages ranging from 2.4V to 5.5V so you can use it with your 3V or 5V microcontroller. Using the sensor is easy. For example, if you’re using an Arduino, simply connect the VDD pin to the 5V voltage pin, GND to ground, SCL to I2C Clock (Analog 5 on an UNO) and SDA to I2C Data (Analog 4 on an UNO).
Resourcces
Guide
MPL115A2 Datasheet
Fritzing object in Adafruit Fritzing library
EagleCAD PCB files on GitHub