In stock, ships same business day if ordered before 2PM
Delivered by Tue, 24th of Dec
Quantity Discounts:
Restrictions apply to this RF Equipment for use in Australia:
For use in other locations around the world:
A declaration of use will need to be submitted during checkout.
Features
Application Note
For more detailed information about how to use LoRa-E5, please visit LoRa-E5 (STM32WLE5JC) Module Wiki.
1. Factory AT Firmware
LoRa-E5 series has a built-in AT command firmware, which supports LoRaWAN Class A/B/C protocol and a wide frequency plan: EU868/US915/AU915/AS923/KR920/IN865. With this AT command firmware, developers can easily and quickly build their prototype or application.
The AT command firmware contains a bootloader for DFU and the AT application. The "PB13/SPI_SCK/BOOT" pin is used to control LoRa-E5 to stay in the bootloader or jump to the AT application. When PB13 is HIGH, the module will jump to AT application after reset, with a default baud rate of 9600. When PB13 is LOW (press the "Boot" button on LoRa-E5 Dev Board or LoRa-E5 mini), the module will stay in the bootloader, and keep transmitting "C" character every 1S at baud rate 115200.
Attention
1. Factory AT Firmware is programmed with RDP (Read Protection) Level 1, developers need to remove RDP first with STM32Cube Programmer. Note that regression RDP to level 0 will cause a flash memory mass to erase and the Factory AT Firmware can't be restored again.
2. The "PB13/SPI_SCK/BOOT" pin on the LoRa-E5 module is just a normal GPIO, not the "BOOT0" pin of the MCU. This "PB13/SPI_SCK/BOOT" pin is used in the bootloader of the Factory AT firmware, to decide to jump to APP or stay in bootloader(for DFU). The real "BOOT0" pin doesn't pinout to the module, so developers need to be careful when developing low-power applications.
2. Clock Configuration
2.1 HSE
32MHz TCXO
TCXO power supply: PB0-VDD_TCXO
2.2 LSE
32.768KHz crystal oscillator
3. RF Switch
LoRa-E5 module ONLY transmits through RFO_HP:
Receive: PA4=1, PA5=0
Transmit(high output power, SMPS mode): PA4=0, PA5=1
Specifications
ITEMs | Parameter | Specifications | Unit | |||
---|---|---|---|---|---|---|
Core | MCU | ARM Cortex M4 | ||||
Storage | 256KB Flash, 64KB SRAM | KB | ||||
Structure | Size | 12(W)*12(L)*2.5(H) | mm | |||
Package | 28 pins, SMT | |||||
Electrical Characteristics | power supply | 3.3V type | V | |||
Minimum sleep current | 2.1uA(SOC) | uA | ||||
Operation current (Transmitter+MCU) | 50mA @10dBm in 434MHz type | mA | ||||
111mA @22dBm in 470MHz type | ||||||
111mA @22dBm in 868MHz type | ||||||
Operation current (Receiver+MCU) | 6.7mA @BW125kHz, 868MHz type | mA | ||||
6.7mA @BW125kHz, 434MHz type | ||||||
6.7mA @BW125kHz, 470MHz type | ||||||
Output power | 10dBm max @434MHz | dBm | ||||
22dBm max @470MHz | ||||||
22dBm max @868MHz | ||||||
Sensitivity | @SF12, BW125kHz | dBm | ||||
Fr(MHz) | min | type | max | |||
434 | - | -134.5 | -136 | |||
470 | - | -136.5 | -137.5 | |||
868 | - | -135 | -137 | |||
Harmonics | < -36dBm below 1GHz | dBm | ||||
< -40dBm above 1GHz | dBm | |||||
Interface | RFIO | RF port | ||||
UART | 3 group of UART, include 2 pins | |||||
I2C | 1 group of I2C, include 2 pins | |||||
ADC | 1 ADC Input, include 1 pins, 12-bit 1Msps | |||||
NRST | Manual reset pin input | |||||
SPI | 1 group of SPI, include 4 pins |
Resources
Datasheet:
LoRa-E5 datasheet and specifications
LoRa-E5 AT Command Specification
Certifications:
LoRa-E5-HF Certification CE-VOC-RED
LoRa-E5-HF FCC Certification -DSS
LoRa-E5-HF FCC Certification -DTS
Library:
Relevant SDK:
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