User's Guide

Chapter 3. Method of operation

3.1 PIN MAPPING BETWEEN MCU AND LORA TRANSCEIVER

The module contains MCU ATSAMD20J18A to control Lora transceiver SX1276, LNA Qorvo SPF-

5043Z and PA Qorvo RFPA0133. The pin to pin mapping is shown as Table 3-1, Table 3-2 and

Table 3-3.

Table 3-1 Pin mapping between MCU and LoRa transceiver

Table 3-2 Pin mapping between MCU and PA

Table 3-3 Pin mapping between MCU and LNA

Pin of ATSAMD20J18A Pin of SX1276

PA16 MISO

PA17 SCK

PA19 MOSI

PA18 SS

PA21 DIO0

PA20 DIO1

PB17 DIO2

PB16 DIO3

PA25 RF_RESET

Pin of ATSAMD20J18A Pin of RFPA0133

PB14 PD

PA12 G8

PB15 G16

PA08 = high RFPA0133 power off

PA08 = low RFPA0133 power on

Pin of ATSAMD20J18A Pin of SPF-5043Z

PA24 = low SPF-5043Z power off

PA24 = high SPF-5043Z power on