The nPM Fuel Gauge Board is an easy-to-use extension board for the nPM1300 Evaluation Kit (EK), allowing battery profiling and fuel gauging in the nPM PowerUP app.
To connect the nPM1300 EK to the nPM Fuel Gauge Board, use edge connectors P20 and P21 (denoted as EXT BOARD).
Figure 1. Schematic of extension board connections on EK
| Pin | EXT BOARD connectors | |
|---|---|---|
| P20 | P21 | |
| 1 | VSYS | SDA |
| 2 | GND | SCL |
| 3 | VBUS_nPMC (nPM Controller) | EXT_GPIO0 |
| 4 | GND | EXT_GPIO1 (active low) |
| 5 | VDDIO | EXT_GPIO2 |
| 6 | GND | EXT_GPIO3 |
For more information, see nPM Fuel Gauge Board Hardware.