MPR121 12-ch Proximity Capacitive Touch Sensor Controller with I2C for Arduino and Raspberry Pi

12 capacitance-sensing inputs; 8 inputs are multifunctional for LED driver and GPIO

Operating voltage: 1.7V to 3.6V

Current needed: 39μA and 3μA in stop mode

Complete touch detection:

-Auto-configuration for each sensing input

-Auto-calibration for each sensing input

-Touch/release threshold and debounce for touch detection

I2C interface with interrupt output

Operating temperature: -40°C to +85°C