YJJ RAK4631 Nordic NRF52840 BLE Core Module Supports LoRa SX1262 for Industrial Low-Power Monitoring

Product Description:

YJJ RAK4631 Nordic NRF52840 BLE Core Module Supports LoRa SX1262 for Industrial Low-Power Monitoring

Features:

RAK4631 WisBlock Dual-Mode Core Module Complete Parameter Description
Module Positioning: nRF52840 BLE5.0 + SX1262 LoRaWAN integrated WisBlock core board, divided into standard version RAK4631 (external antenna IPEX socket) and RAK4631-R (built-in antenna + RUI3 firmware), the hardware is completely the same only the firmware is different. RAKwireles...
1. Main Control MCU (BLE Core nRF52840)
Core: 32-bit ARM Cortex-M4F, with hardware FPU for floating-point operations
Frequency: 64MHz
Storage: 1MB Flash + 256KB RAM
Security: Built-in CryptoCell encryption unit, supports AES, ECDH, SHA, etc. hardware encryption
Board Peripheral Devices: 32.768kHz RTC crystal oscillator, NFC-A tag coil, full-speed USB2.0 Device/OTG Nordic Sem...
2. BLE 5.0 Radio Key Parameters (2.4GHz)
Protocol Stack: BLE 5.0 (BLE Mesh, Long Range, 2Mbps high speed), NFC-A, compatible with Zigbee/Thread
Transmission Power: -20 ~ +4dBm, 4dB step adjustable
Receiving Sensitivity:
1Mbps BLE: -95dBm
125kbps Long Range Mode: -103dBm
Rates: 2Mbps / 1Mbps / 500kbps / 125kbps
Antenna:
RAK4631: IPEX4 external 2.4G antenna socket
RAK4631-R: PCB board built-in BLE antenna
BLE Typical Power Consumption:
BLE Broadcast TX (0dBm): ~4.8mA
BLE Standby Reception: ~1mA
Deep Sleep: 2μA (whole machine)
3. LoRa SX1262 Radio Parameters (Sub-GHz)
Frequency Band Version Differentiation:
RAK4631 (L): 433–470MHz (China 433M)
RAK4631(H): 779–923MHz (EU868/US915/AS923)
Protocol: LoRaWAN 1.0.2/1.0.3, LoRa Point-to-Point P2P
Transmission Power: Boost mode maximum + 22dBm
Receiving Sensitivity: Low to - 148dBm, link budget 170dB
Bandwidth: 7.8kHz ~ 500kHz adjustable, built-in TCXO temperature-compensated crystal oscillator (wide temperature stability)
LoRa Power Consumption:
22dBm Transmission: ~14.5mA
Receiving Monitoring: ~14.5mA
Sleep Mode Same as Whole Machine 2μA
4. Electrical Power Supply Parameters
Operating Voltage: 2.0V ~ 3.6V (Li-ion battery 3.7V system, cannot be directly 5V power supply)
Recommended Power Supply: 3.3V / 3.7V Li-ion battery (matched with WisBlock baseboard charging management)
Sleep Current: Typical 2.0μA (RTC timing wake-up, minimum 1.2μA)
Peak Current: LoRa full power transmission ≈ 14.5mA, BLE peak < 5mA
Baseboard Expansion Power Supply: Baseboard supports Micro USB 5V input, charging Li-ion battery (maximum 350mA) V. Hardware Interfaces (Connected to WisBlock Base)
Serial Port: 2 channels of UART (support AT commands, sensor communication)
I2C: Standard I2C bus, compatible with temperature and humidity sensors, oxygen sensors, pressure sensors
SPI: High-speed SPI (can be connected to Flash, display)
ADC: Multiple 12-bit analog inputs (collect battery voltage, analog sensors)
GPIO: Multiple general-purpose digital I/O, external interrupt wake-up
USB: Micro-AB full-speed USB, used for programming, serial port logs, OTG
Debugging: SWD download debugging interface
Expansion NFC: Through IO module, NFC pins RAKwireles...
VI. Mechanical Dimensions and Environment
Size: 20mm × 30mm, thickness approximately 3mm
Weight: ≈4g (excluding antenna)
Fixation: 2 Φ1.5mm installation holes, screws fixed on WisBlock base
Operating Temperature: -40℃ ~ +85℃
Storage Temperature: -40℃ ~ +85℃
Humidity: 0~95% RH without condensation
VII. Firmware and Development Method
RAK4631 (Original Version): Arduino BSP, PlatformIO, Zephyr RTOS development
RAK4631-R: Pre-installed RUI3 low-code firmware, supports AT commands, API secondary development, BLE/USB/UART can all issue AT commands
OTA: Supports BLE wireless upgrade, USB firmware upgrade
Certification: FCC/CE/RoHS compliance certification RAKwireles...
VIII. Typical Application Scenarios
 

Specifications: