RAKwireless RAK2245 - Power Supply; SPI Interface; UART and I2 C; Table 2 | Pin Definitions

8
RAK2245
8
RAK2245 User Manual V1.2
A15
GND
GND
GND
B1
GND
GND
GND
B2
GND
GND
GND
B3
SDA_GPS
I2C
GPS Module I2C SDA
B4
SCL_GPS
I2C
GPS Module I2C SCL
B5
GND
GND
GND
B6
GND
GND
GND
G1
GND
GND
GND
G2
GND
GND
GND
G3
GND
GND
GND
G4
GND
GND
GND
G5
GND
GND
GND
G6
GND
GND
GND
G7
GND
GND
GND
G8
GND
GND
GND
Table 2 | Pin Definitions
2.5 Power Supply
RAK2245 module be supplied through the 5V power pins, it integrats the IOREF for
Level Translator, can communicate with 3.3V, 1.8V and other different voltage
interfaces.
2.6 SPI interface
The PINs on the bottom side provides an SPI connection, which allows direct access to
the Sx1301 SPI interface. This gives the target system the possibility to use existing
SPI interfaces to communicate.
After powering up RAK2245, it is required to reset SX1301 via PIN A13.
2.7 UART and I2C
The PINs on the bottom side provides an UART connection and I2C connection, which
allows direct access to the GPS module. The 1PPS was connected to SX1301
internally.