1. Major Characters
Software Features：
• Integrate standard LoRaWAN communication protocol, optional custom private protocol and Airnode protocol；
• The module adopts the interactive mode of AT command to configure, and the operation is simple. For the control of the peripheral interface of the module, only a few or even one command is needed to configure the peripheral interface function of the module；
• The serial port data is transparently transmitted. After configuring the transparent transmission mode, the data sent by the serial port can be directly transparently transmitted to the cloud.；
• Rich peripheral interfaces Provide Uart, SPI, I2C, GPIO, ADC interfaces ；
• The use of LoRa spread spectrum modulation technology has extremely high sensitivity, and the communication distance is up to 1KM - 10KM ；
• Adopt low-power serial port, can send and receive data normally in sleep mode, no need to wake up；
• Support serial port upgrade, wireless upgrade；
• Support serial port baud rate adjustable, output power adjustable and multiple communication rates；
Hardware Features：
• Use the world's smallest package SOC chip: STM32WL, ARM Cortex-M4 core, built-in SX1262 function；
• LoRa spread spectrum modulation technology, receiving sensitivity up to -138dBm (BW = 125 kHz, SF = 12)；
• Built-in high-efficiency PA, lower power consumption, maximum support 22dBm output, and can be configured in the range of 0~22dBm；
• The world's leading LoRa communication security guarantee, supports 128/256-bit AES hardware encryption, PCROP read and write protection, public key encryption using elliptic curve encryption engine；
• Comply with major global regulatory requirements: ETSI EN 300 220, EN 300 113, EN 301 166, FCC CFR 47 Part 15, 24, 90, 10, Japan ARIB STD-T30, T-67, T-108, and China regulatory requirements Wait；
• Support global frequency bands, covering domestic and foreign mainstream frequency bands: CN470-510MHZ, EU863-870 MHz, US902-928 MHz and all major sub-GHzISM frequency bands around the world；
• Excellent wireless spurious performance. Compared with the traditional SIP chips authorized by semtech wafers, the in-band spurs are small, the adjacent channel suppression ratio is high, and the mutual interference is small, which is suitable for large-scale equipment communication；
• Very low sleep current, working current as low as 3.0uA in sleep state ；
• Support scalable dual-core design, open a full-featured MCU for customer function development, facilitate user integration and reduce costs；
• Small size, industrial-grade design, good stability
3.Application Schematic
4. Module pin interface
The M300C module provides a wealth of peripheral interfaces, including SPI, UART, ADC, GPIO, I2C, etc., as shown in the following figure:
M300C Module Pin Diagram
5. Module size drawing
6. Main application
• Smart Agriculture
Monitoring of water quality, carbon dioxide concentration, temperature, humidity, pests and diseases;
• Environmental monitoring
Real-time data transmission of temperature, wind speed, water level, flow, sediment and other data, giving full play to the characteristics of low power consumption, long distance and low cost;
• Smart meter reading
The monthly electricity consumption information of each household can be transmitted to the LoRa module, and the LoRa module can transmit the data to the remote control center through the gateway.
In addition, there are also a wide range of fields such as intelligent parking, intelligent irrigation, and photovoltaic array detection.
