The Inter-integrated Circuit (I2C) compatible TWI is used by the host device to control and monitor the nPM1300 Power Management Integrated Circuit (PMIC).
The TWI pins are directly accessible on pin header P11.
Figure 1. TWI schematic
| Pin | Pin name | Function |
|---|---|---|
| 1 | SDA | TWI data line |
| 2 | SCL | TWI clock signal |
| 3 | VDDIO | TWI voltage reference |
| 4 | GND | Ground |