9
RAK2245 Pi HAT
9
RAK2245 Pi HAT User Manual V1.2
2.7
UART and I2C
UART and I2C connections are also included on the pin connector. These connections
allow direct access to the GPS module. The 1PPS is connected internally to SX1301.
2.8
Digital IOs
There are two digital IO PINs, which give the user an interface to reset the GPS module
or set it into standby mode.
2.9
LEDs
3 x Green LED for indicating the status of PWR, TX, RX.
2.10
Antenna RF Interface
The modules have two RF interfaces for LoRa and GPS antennas over the standard
UFL connectors (Hirose U. FL-R-SMT). It has a characteristic impedance of 50OHM
and supports both Tx and Rx via RF ports, providing the antenna interface.
2.11
Electrical Characteristics
The following are the electrical characteristics of RAK2245 Pi HAT. Please contact us if
you need other details and/or parameter for your project.
2.11.1
Absolute Maximum Rating
The values and range given below are all in accordance with Absolute
Maximum Rating System (IEC 134).
Parameter
Description
Min.
Typ.
Max.
Supply Voltage (VDD)
Input DC voltage
-0.3V
5.0V
5.5V
Operating Temperature
Temperature Range
-40°C
+85°C
RF Input Power
-15
dBm
Table 3
| Absolute Maximum Ratings
