User's Manual

3
RAK
5860
2.5 IO Connector
The RAK5860 only uses a subset of all the pins available in the IO connector. These are shown in
the Table below:
Name Description Comment
VBAT BG77 power supply MAX 4.2V
3V3_S 3.3V for GNSS antenna
3V3 3.3V for voltage-level translator.
WIS_PWRKEY Turn on/off BG77 Active high
WIS_TX UART TXD BG77 MAIN_RX, 1.8V power domain
WIS_RX UART RXD BG77 MAIN_TX, 1.8V power domain
2.6 IO Connector Pin order
Figure 4 shows the IO connector’s pin order. The connector is located in the bottom layer of the
RAK5860 module.
Figure 4: IO Connector Pin Order