Adafruit MPR121 12-Key Capacitive Touch pinout
All 7 pins of the Adafruit MPR121 12-Key Capacitive Touch, each mapped to the chip pad it routes to, with its functions and — for 0 pins — the voltage and current limits from the chip datasheet.
7 pins0 with electrical limits2 power in1 ground1 i2c scl1 i2c sda1 address1 interrupt
Adafruit MPR121 12-Key Capacitive Touch pins, functions and electrical limits
| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vin | power in | power_in | ||||||||||
| 3Vo | power in | power_in | ||||||||||
| GND | ground | ground | ||||||||||
| SCL | i2c scl | scl | ||||||||||
| SDA | i2c sda | sda | ||||||||||
| ADDR | address | addr | ||||||||||
| INT | interrupt | int |
Adafruit MPR121 12-Key Capacitive Touch overview · All tactile & touch sensors