2.4 GHz LoRa® module

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  • Description

    EMB-LR1280S is the new ultra-low-power 2.4 GHz band based OEM Embit module. It exploits Semtech’s proprietary spread spectrum modulation technique to provide long-range connectivity and

    high-interference immunity, outperforming any other 2.4 GHz technology in terms of communication range. The radio is fully compliant with the worldwide 2.4 GHz frequency band regulation and can operate anywhere in the world. Also, the use of the 2.4 GHz ISM radio band, being not subject to duty cycle, allows enhancing the overall transmission rate with respect to others sub 1-GHz solutions.

    EMB-LR1280S is based on Semtech’s SX1280 long-range 2.4 GHz transceiver coupled with STM32L073 MCU. The MCU is equipped with up to 192 KB Flash memory and up to 20 KB of RAM memory. The module integrates two crystals, one at 52 MHz and one at 32 kHz and a Crypto Unit to protect the communication between the module and external interfaces, enhancing data security.

    EMB-LR1280S can communicate with other devices through a wide range of serial interfaces: UART, I2C, USB, SPI, several digital and analog I/O ports useful for the management of external devices and interfaces. Moreover, the extremely reduced low power consumptions provided by the STM32L073 MCU, makes the EMB-LR1280S particularly suitable to implement long-life battery-powered devices.

    EMB-LR1280S can be configured as an embedded micro system or simple data modem.

    The firmware can be easily developed starting from the Embit SDK. The Embit evaluation kit (EMB-LR1280-EVK) contains all the documentation, software and hardware

    tools to get started with the EMB-LR1280S module.

    EMB-LR1280S is embedded with LoRaEMB and LoRa® 2.4 GHz stacks. The proprietary LoRaEMB protocol allows the node to be connected and operate within a star topology/point-to-point network, featuring all the main functionalities of an IEEE 802.11.4 based network. EMB-LR1280S is compliant with Semtech LoRa® 2.4 GHz specifications.

    Leveraging both the advantages of LoRa® long range modulation and 2.4 GHz RF properties and regulation, the EMB-LR1280S represents a perfect solution for many industrial applications with the aim of ensuring worldwide deployment.

  • Technical Specifications
    • MCU: STM32L073
    • Transceiver: Semtech® SX1280
    • Memory: 20 KB RAM/ 192KB Flash
    • Frequency: 2400 ÷ 2500 MHz
    • Tx Output Power: up to 12 dBm
    • Rx Sensitivity: up to -132 dBm at 595 bps, -130 dBm at SF12 SB 203 KHz (476bps)
    • Data rate: 0.595 ÷ 253.9 Kbs LoRa®, up to 2.3 Mbps (GFSK)
    • Interfaces: UART/LPUART/I2C/SPI/ADC/USB
    • Digital I/O: 15
    • Analog I/O: 3 ADC Channels
    • Outdoor link range: up to 10 Km (Line of Sight)
    • Supply Voltage: 1.8 – 3.6 V
    • Tx Current: 34 mA @ +12 dBm
    • Rx Current: 9.5 mA
    • Sleep Current: <= 1 uA
    • Antenna: U.FL connector or chip antenna
    • Dimension: 15.5 x 20 x 2.3 mm
    • Connector: SMD Edge Connector
    • Temperature Range: -40 to +85 °C


  • Documentation

    Brochure: EMB-LR1280S

  • Ordering Information

    Part Numbers: EMB-LR1280s/xx

    xx: – UL with micro U.fl connector

    – AN with ceramic antenna

    For quotes, please contact our sales area at sales@embit.eu

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