Elecrow nRFLR1121 Wireless Transceiver Module-Integrates Nordic nRF52840 and Semtech LR1121

Description

The Elecrow nRFLR1121 module integrates the Nordic nRF52840 microcontroller and the Semtech LR1121 LoRa transceiver chip. It is a high-performance, low-power, long-range transceiver module. It supports Bluetooth 5.3 and low-power Bluetooth, complies with the A, B, and C classes of the LoRaWAN 1.0.4 specification. And it supports LoRa point-to-point (P2P) communication mode, covering the 850~930MHz (applicable to 868MHz, 915MHz) global ISM frequency band, with a maximum transmit power of +20dBm, a transmission rate range of 1.91~62.5Kbps, and a transmission distance of up to 10 km. In addition, the module supports ground ISM band communications, covering the global 2.4GHz spectrum and Sub-GHz band, and also supports S-band LR-FHSS (Long Range - Frequency Hopping Spread Spectrum) technology for satellite connection (the two cannot work at the same time). This makes it suitable for remote areas without ground network coverage, such as environmental monitoring of meteorological stations and hydrological stations and transmits data to the central server via satellite communication.

The nRFLR1121 module has built-in AT command firmware, supports SDK customized development, and rich peripheral interfaces provide high flexibility to meet diverse development needs. Designed in accordance with industrial standards, the nRFLR1121 module is an ideal choice for high-reliability applications such as remote monitoring, ship communications, and rescue missions.

Self-developed by Elecrow with exclusive design. Customization can be discussed for bulk orders.

Feature

High performance: Maximum transmit power can reach +20dBm, support 1.91~62.5kbps transmission rate, -141dbm sensitivity @SF12/BW=125kHz, 166db link budget；
Ultra-low power consumption, sleep current is only 6uA;
Supports sub-GHz and global 2.4GHz spectrum, as well as S-band, and supports LoRa point-to-point (P2P) communication;
Wireless connection supports 850~930MHz global LoRa&LoRaWAN ISM frequency, supports low-power Bluetooth, Bluetooth mesh network, NFC, Thread and Zigbee;
Built-in AT command firmware and support the use of SDK for customized product development, and the AT command set can be easily used through the UART interface;
Long-distance communication, the communication distance can reach 10km;
Rich peripherals, the module leads to a variety of GPIO interfaces such as UART, I2C, ADC, etc., providing great flexibility;
Compact form factor with only 20x 20x 3.5 mm
FCC, CE RoHS certification

Application scenarios

Smart city, smart agriculture, industrial automation, environmental monitoring, smart home, logistics management, medical health;

Pin Definition

pin definition of nRFLR1121 Transceiver module

Specification

Processor	RF chipnRF52840 processor, dual-core 32-bit, 64MHz main frequency
RF chip	Semtech LR 1121Chip
LoRa Specification
Transmit Power TX	+22 dBm@Max
Receiving Sensitivity	-141dBm
Link Budget	Support 166db link budget
Demodulator	Support LoRa/(G)FSK/GMSK/Sigfox signal modulation;Support S-band satellite frequency hopping spread spectrum communication;
LoRa Frequency Range	Supports configuration in the 150MHz to 960MHz and 2400 MHz bands;
Spreading Factor	SF5~SF12
Wireless connection	Supports low-power Bluetooth, Bluetooth mesh network, NFC, Thread and Zigbee
Data Transfer Rate	Supports data transmission rates from 1.91 to 62.5 Kbps
Other
Frequency	Covering 850~930MHz (applicable to 868MHz, 915MHz)
Communication Interface	SPI(0~10Mbps)
Lead Pin	Such as SPI signal, VCC, multiple GND, NRST, ANT, TX control, RX control, BUSY status, NFC, SWD debugging pin, etc.
Antenna	Not onboard, via RF pins
Reference Power Consumption	6uA (sleep), 126mA (transmit + MCU), 18mA (receive + MCU)
Communication Distance	5~6km, maximum over 10km
Crystal Type	Industrial grade 32MHz TCXO
LoRaWAN Protocol	Class A/B/C (compliant with LoRaWAN 1.0.4 specification)
Operating Voltage	1.8~3.7V
Operating Temperature	-40℃~+85℃, Industrial standard design
Package Size	20203.5mm, 80-Pin, SMT patch, LGA package;
Weight	3g