RF-Star EFR32MG24 Bluetooth BLE5.3 ZigBee Matter OpenThread Transmitter Receiver Module
RF-BM-MG24B1 and RF-BM-MG24B2 are IoT wireless connectivity modules based on Silicon Labs EFR32MG24 series SoCs. They integrate a 39 MHz crystal and a 32.768 kHz crystal, up to 1536 KB programmable flash, and 256 KB RAM, making it possible to use in many complex applications. Its 32-bit 78 MHz ARM® Cortex®-M33 core can operate at an extremely low current at flexible power modes. Its multiprotocol 2.4 GHz RF transceiver is compatible with Matter, OpenThread, Zigbee®, Bluetooth® 5.3 Low Energy,

Bluetooth Mesh, and 2.4 GHz Proprietary. It features a small size, robust connection distance, and rigid reliability. Up to optional ten dBm or 19.5 dBm, TX power enables it to be used in long-range requirement applications. It features a small size, robust connection distance, and rigid reliability. Those modules are pin-2-pin compatible with each other. Soon, RF-star CC2340 Bluetooth LE modules will support Channel Sounding modes.
- Wireless SoC: 32-bit 76.8 MHz ARM® Cortex®-M33 processor
- TX power: 19.5 dBm
Sensitivity
- -105.4 dBm sensitivity @ 250 kbps O-QPSK DSSS
- -105.7 dBm sensitivity @ 125 kbps GFSK
- -97.6 dBm sensitivity @ 1 Mbps GFSK
- -94.8 dBm sensitivity @ 2 Mbps GFSK
Memory
- 1536 KB programmable flash
- 256 KB of RAM
Features
- Matter
- OpenThread
- Zigbee®
- Bluetooth® 5.3 Low Energy
- Bluetooth Mesh
- Proprietary 2.4 GHz
Operating Range
- Supply voltage range: 2.2 V ~ 3.8 V (DC-DC mode), 1.8 V ~ 3.8 V (Bypass mode), 3.3 V is recommended
- Operating Temperature: -40 °C ~ +85 °C
Rich Peripherals
- 30 GPIOs
- Analog to Digital Converter
- Analog Comparator
- Digital to Analog Converter
- 8 Channel DMA Controller
- 16-channel peripheral reflex system
- USART: UART/SPI/ISO7816/IrDA/I2S
- EUSART: UART/SPI/DALI/IrDA
- I2C
- RTC
- I2C
- RTC
- Watchdog
- PWM
Applications
- Gateway and hubs
- Sensors
- Smark Lighting
- Switches
- Location services
- Wireless healthcare applications
- Asset tracking and management
- Electronic Shelf Label (ESL)








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