iM880A-L - Long Range Radio Module

Product Change Notification: iM880A had been upgraded to more functionality in terms of memory and operating temperature, please refer to iM880B.

Description:
The iM880A-L is a compact and low-cost radio module that operates in the unlicensed 868 MHz band and combines a powerful Cortex-M3 controller with the new LoRa™ transceiver SX1272 of Semtech Corporation. A sensitivity of up to -137 dBm and a maximum output power of +19 dBm results in a link budget of more than 156 dB. Even when reducing the output power to +14 dBm ranges beyond 15 km are possible in free space. The iM880A-L is pre-certified according the European R & TTE guideline and can be soldered like an SMD component.

Embedded Software:
The iM880A-L can be ordered with a pre-programmed embedded protocol stack in two options:

iM880A-L_LR_Base:
This WiMOD Long Range firmware is a collection of functionalities and applications like Radio Link Test, Sensor App., Data Link Service, etc. embedded in our powerful WiMOD OS operating system. The WiMOD LR HCI interface provides to the user direct access to many radio parameters. Please refer to the download section.

iM880A-L_LoRaWAN:
The LoRaWAN protocol stack, specified by the LoRa Alliance, is based on IBM’s LMiC and IMST’s WiMOD-OS. It enables Low Power Wide Area Networks (LPWANs) for Internet-of-Things (IoT) and Machine-to Machine (M2M) applications and supports Direct or Over The Air (OTA) activation. It comes with the WiMOD LoRaWAN™ HCI interface and allows easy configuration. Please refer to the download section.

 

 

 

  • Maximum output power +19 dBm
  • Maximum sensitivity ‑137 dBm
  • Range up to 15000 m (LoS)
  • Solderable like a SMD component
  • 50Ω pad for antenna
  • RoHS conform


  • Automated Meter Reading
  • Home and Building Automation
  • Wireless Alarm and Security Systems
  • Industrial Monitoring and Control
  • Long Range Irrigation Systems
  • IoT (Internet of Things)
  • Smart Cities


Frequency range: SRD Band 863 to 870 MHz
Modulation: LoRa™ Spread-Spectrum
RF output power: up to +19 dBm (50Ω pad)
Receiver sensitivity: -137 dBm (SF 12;  SB 125 kHz, CR 4/6)
-134 dBm (SF 12;  SB 250 kHz, CR 4/6)
-128 dBm (SF 12;  SB 500 kHz, CR 4/6)
RF datarate: 0.24 to 37.5  kbps
RF range: up to 15000 m (line of sight)
Operating voltage: 2.4 V to 3.6 V
Current consumption: < 2.5 μA (Trx sleep, RTC running)
11 mA (Rx)
118 mA (Tx @ 3.0 V/ +19 dBm)
Interfaces: UART
SPI*
I²C*
RF (LoRa™)
IO's: Digital IOs
Analog Inputs
Dimension (LxWxH): 20 x 25 x 2 mm
Operating temperature: -20°C to +70°C
Certification: Prequalified according to ETSI EN 300 220



General Information:
iM880A_AN010_SW-Development_V0_6.pdf This Application Note provides a brief description for software development with iM880A-L. It also describes how to update the modules firmware with the integrated bootloader.
iM880A_AN011_RangeTest_V1_0.pdf This Application Note includes results of various range tests made with the SK-iM880A.
iM880A_AN012_RFSettings_V1_2.pdf This Application Note provides an overview about the possible RF settings of iM880A-L for the 868 MHz frequency band.
iM880A_Datasheet_V1_1.pdf Data Sheet for iM880A.
WiMOD_AltiumModulesLibs_V1_7.zip Modules Lib for Altium Designer.
 

 

WiMOD LoRaWAN:
WiMOD_LoRaWAN_EndNode_Modem_Feature_Spec_V1_10.pdf This document outlines the current version of WiMOD LoRaWAN EndNode Modem firmware features.
This firmware is designed for the WiMOD LR radio module family (e.g. iM880A-L, iU880A).
WiMOD_LoRaWAN_EndNode_Modem_HCI_Spec_V1_12.pdf This document outlines the current version of the WiMOD LoRaWAN HCI specification.
The WiMOD LoRaWAN™ HCI protocol is designed to expose the radio module services to an external host controller.
The communication between host and the radio is based on so called HCI messages which can be sent through a UART interface.
WiMOD_LoRaWAN_EndNode_Firmware_V1_12.zip

This file contains the WiMOD LoRaWAN™ firmware (hex-file) Release V1_12 for the iU880A and iM880A-L.
This version of the firmware has passed the LoRaWAN certification process.
It contains all necessary documentation and release information.

WiMOD_LoRaWAN_EndNode_Firmware_V1_17.zip

This file contains the current WiMOD LoRaWAN™ firmware (hex-file) for the iU880A and iM880A-L.
It contains all necessary documentation and release information.

WiMOD_LoRaWAN_DevTool_V2_1_0.zip This tool is intended to be used for the first steps of implementing the LoRaWAN HCI interface between the radio module and the host MCU. It is a simple tool for checking if the basic communication primitives are working. You can select LoRaWAN_HCI primitives with CRC and Slip encoding or in raw format.
WiMOD_LoRaWAN_EndNode_Studio_V0_26_0.zip

This is a GUI for easy configuration of LoRaWAN™ compliant radio nodes. It supports Direct Activation and Over The Air (OTA) Activation, and provides the possibility to transmit unconfirmed and confirmed data.
It contains the LoRaWAN certified firmware for iM880A and iU880A and all necessary documentation and release information

WiMOD_LoRaWAN_EndNode_Studio_V0_31_0.zip

This is a GUI for easy configuration of LoRaWAN™ compliant radio nodes. It supports Direct Activation and Over The Air (OTA) Activation, and provides the possibility to transmit unconfirmed and confirmed data.
It contains the current firmware for iM880A and iU880A and all necessary documentation and release information

 

WiMOD_LoRaWAN_ExampleCode_EFM32_V1_3.zip This C example code project shows how to implement the WiMOD LoRaWAN™ HCI protocol on the host side. The project is created for IAR Embedded Workbench and uses an EFM32 microcontroller as host.

 

WiMOD_LR (Long Range):
WiMOD_LR_Base_Feature_Spec_V1_0.pdf This document outlines the WiMOD LR Base firmware features. This firmware is designed for the WiMOD LR radio module family (e.g. iM880A-L, iU880A).
WiMOD_LR_Base_HCI_Spec_V1_7.pdf Host Controller Interface specification. The WiMOD LR Base HCI protocol is designed to expose the radio module services to an external host controller. The communication between host and the radio (WiMOD) is based on so called HCI messages which can be sent through a UART interface. The WiMOD LR Base firmware provides several services for configuration, control and radio link access.
WiMOD_LR_Base_Firmware_V1_12.zip This file contains the current WiMOD LR firmware (hex-file) for the iU880A and iM880A-L.
WiMOD_LR_Studio_V1_18_4.zip The WiMOD LR Studio is part of the WiMOD Starter Kit. It is a plug & play solution to explore the features and capabilities of the Long Range module iM880A and iU880A.
WiMOD_LR_ExampleCode_V1_1.zip This file contains two projects: A “C++” implementation of LR_Base_HCI interface and a “C” implementation of LR_Base_HCI interface for EFM32TG840F32 platform.

WiMOD_LR-Dev-Tool_V2_0_4.zip This tool is intended to be used for the first steps of implementing the HCI interface between the radio module and the host MCU. It is a basic tool for checking if the basic communication primitives are working. It generates the packets in raw format of the HCI interface. 
WiMOD_LR_iX880A_UpdateTool_V1_0.zip Update Tool for WiMOD LR Firmware for iM880A and iU880A.
 

 

* This functionality is not part of the standard firmware and only available on demand.

Subject to changes without notice.

PCN: Product Change Notification