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LR1262 LoRaWAN Node Module

Description


The LR1262 is a low power long range transceiver module based on the STM32WLE5CCU6 chip. It provides an easy-to-use, small size and low power solution for long range wireless data applications. The module is compliant with the LoRaWAN 1.0.3 specification for Class A, B and C standards. It can easily connect to different LoRaWAN server platforms such as TheThingsNetwork (TTN), Chirpstack, Actility and others. It also supports LoRa peer-to-peer (P2P) communication mode, which helps you quickly implement your own customised long-range LoRa network. You can configure the module's mode and operation using AT commands via the UART interface.The LR1262 also features low power consumption, making it ideal for battery-powered applications.

The LR1262 is a high-power remote module with a convenient stamp-hole form factor for easy integration into device motherboards without additional components. It supports multiple frequency plans such as EU868/US915/AU915/AS923/KR920/IN865 and is compatible with LoRaWAN® Class A/B/C protocol. In addition, the module is FCC/CE certified, making it cost-effective to quickly get your entire device certified and approved by any regulatory agency. With the built-in AT command firmware, beginners can easily create prototypes or applications with just a few simple commands. On the other hand, experienced developers can use the SDK to develop custom products.

Model: CRT01268N

1262 node.png

Alt text

Feature


  • Based on STM32WLE5CCU6
  • Compliant with LoRaWAN 1.0.3 specification
  • Supported bands IN865, EU868, AU915, US915, KR920, RU864 and AS923-½/¾
  • LoRaWAN activation via OTAA/ABP
  • LoRa peer-to-peer (P2P) communication
  • Developed for Keil
  • Easy-to-use AT command set via UART interface
  • Long range - more than 2 km with optimised antennas
  • ARM Cortex-M4 32-bit
  • Flash 256 kbytes with ECC
  • RAM 64 kbytes
  • Ultra-low power consumption of 2.2 μA in sleep mode
  • Supply voltage: 2.0 V ~ 3.6 V
  • Temperature range: -20°C ~ 85°C

Pin Function


Pinout.png

Pin number Pin name Pin type Alternate funtions Additional funtions
1 GND GND
2 BOOT I/O CM4_EVENTOUT
3 NRST I/O
4 GND GND
5 GND GND
6 1V55
7 ADC(PB2) I/O LPTIM1_OUT,I2C3_SMBA,SPI1_NSS,DEBUG_RF_SMPSRDY COMP1_INP,COMP2_INM,ADC_IN4
8 PA10 I/O RTC_REFIN,TIM1_CH3,I2C1_SDA,SPI2_MOSI/I2S2_SD,USART1_RX,DEBUG_RF_HSE32RDY,TIM17_BKIN,SM4_EVENTOUT COMP1_INM,COMP2_INM,DAC_OUT1,ADC_IN6
9 GND
10 GND
11 PC13 I/O CM4_EVENTOUT TAMP_IN1/RTC_OUT1/RTC_TS/WKUP2
12 SWDIO(PA13) I/O JTMS-SWDIO,I2C2_SMBA ADC_IN9
13 SCL(PA12) I/O TIM1_ETR,LPTIM3_IN1,I2C2_SCL,SPI1_MOSI,RF_BUSY,USART1_RTS,CM4_EVENTOUT ADC_IN8
14 SDA(PA11) I/O TIM1_CH4,TIM1_BKIN2,LPTIM3_ETR,I2C2_SDA,SPI1_MISO,USART1_CTS,DEBUG_RF_NRESET COMP1_INM,COMP2_INM,ADC_IN7
15 PA1 I/O TIM2_CH2,LPTI3_OUT,I2C1_SMBA,SPI1_SCK,USART2_RTS,LPUART1_RTS,DEBUG_PWR_REGLP2S,CM4_EVENTOUT
16 PB3 I/O JTD0/TRACESWO,TIM2_CH2,SPI1_SCK,RF_IRQO,USART1_RTS,DEBUG_RF_DTB1,CM4_EVENTOUT COMP1_INM,COMP2_INM,ADC_IN2,TAMP_IN3/WKUP3
17 PB4 I/O NJTRST,I2C3_SDA,SPI1_MISO,USART1_CTS,DEBUG_RF_LDORDY,TIM17_BKIN COMP1_INP,COMP2_INP,ADC_IN3
18 SWCLK(PA14) I/O JTCK-SWCLK,LPTIM1_OUT,I2C1_SMBA,CM4_EVENTOUT ADC_IN10
19 PA15 I/O
20 PB5 I/O LPTIM1_IN1,I2C1_SMBA,SPI1_MOSI,RF_IRQ1,USART1_CK,COMP2_OUT,TIM16_BKIN
21 PB8 I/O TIM1_CH2N,I2C1_SCL,RF_IRQ2,TIM16_CH1,CM4_EVENTOUT
22 PA0 I/O TIM2_CH1,I2C3_SMBA,I2S_CKIN,USART2_CTS,COMP1_OUT,DEBUG_PWR_REGLP1S,TIM2_ETR TAMP_IN2/WKUP1
23 TX1(PA2) I/O LSCO,TIM2_CH3,USART2_TX,LPUART1_TX,COMP2_OUT,DEBUG_PWR_LDORDY LSCO
24 RX1(PA3) I/O TIM2_CH4,I2S2_MCK,USART_RX,LPUART1_RX,CM4_EVENTOUT
25 TX2(PB6) I/O LPTIM1_ETR,I2C1_SCL,USART1_TX,TIM16_CH1N
26 RX2(PB7) I/O LPTIM1_IN2,TIM1_BKIN,I2C1_SDA,USART1_RX,TIM17_CH1N
27 PA8 I/O MCO,TIM1_CH1,SPI2_SCK/I2S2_CK,USART1_CK,LPTIM2_OUT
28 MOSI(PA7) I/O TIM1_CH1N,I2C3_SCL,SPI1_MOSI,COMP2_OUT,DEBUG_SUBGHZSPI_MOSIOUT,TIM17_CH1,CM4_EVENTOUT
29 MISO(PA6) I/O TIM1_BKIN.I2C2_SMBA,SPI1_MISO,LPUART1_CTS,DEBUG_SUBGHZSPI_MISOOUT,TIM16_CH1,CM4_EVENTOUT
30 SCK(PA5) I/O TIM2_CH1,TIM2_ETR,SPI2_MISO,SPI1_SCK,DEBUG_SUBGHZSPI_SCKOUT,LPTIM2_ETR,CM4_EVENTOUT
31 NSS/CS(PA4) I/O RTC_OUT2,LPTIM1_OUT,SPI1_NSS,USART2_CK,DEBUG_SUBGHZSPI_NSSOUT,LPTIM2_OUT,CM4_EVENTOUT
32 3V3(VDD) Supply pin
33 RF ANT
34 GND GND

Case Applications


Case 1: Single-channel Application Routines For Single-channel Gateways And Nodes

Case 2: Multi-Channel Application Routine For Single-Channel Gateways And Nodes

Case 3: Single-channel Application Routines for Raspberry Pi Gateways and Nodes

Case 4: Multi-Channel Application Routine for Raspberry Pi Gateways and Nodes

Case 5: LR1262 Point-to-Point Communication Application Example

AT Command Description


LR1262 LoRaWAN AT Command Description