User Manual

5
4. Reference Design
4.1.Announcements
 The power supply wiring is as thick as possible. It is suggested that the design can
provide 500mA current.
 Radio frequency interface to
the antenna solder part line as short as possible, to 50 Ω
impedance matching, walk around the line played more holes.
 The module reset pin suggests that the external environment may cause the module
reset by connecting the MCU for control.
 SPI port and DIO port can add pull resistor as needed.
 DIO port should be connected to IO port with external interrupt of MCU as possible.
 Clearance is required around the antenna, it is recommended to set aside a clearance
area of 5mm.
 If permitted, the PI circuit is added to the part of the RF outlet to the antenna pad.
 The module of FHSS only uses the private protocol of LoRa. The DTS part uses LoRaWAN;
The module does not support hybrid system mode.