Standalone module supports LoRaWAN

Compliant with the LoRaWAN protocol for narrowband wireless connectivity, Murata’s CMWX1ZZABZ-078 is claimed to be the smallest module for LoRa-based wireless connectivity. It is now available from Avnet Abacus.

The compact module measures 12.5 x 11.6 x 1.76mm in a metal-shielded LGA package. It can be used for adding LoRa based wireless connectivity for a range of products and applications including M2M and IoT, such as smart metering, wearables, tracking assets, M2M communications and sensor-based end nodes in IoT networks.

The module also has pre-certified radio regulatory approvals for operating in the 868 and 915MHz ISM spectrum. This makes it suitable for most geographical regions, says the company.

The module integrates the SX1276 RF transceiver from Semtech, with the low-power STM32L Cortex M0+ based microcontroller from STMicroelectronics. The STM32L includes 192kbytes of flash memory and 20kbytes of RAM. This is sufficient for customer applications and to host other modulation protocol stacks. An integrated TCXO has low drift thermal characteristics and provides a clock source for the RF transceiver.

Other specifications of the module include UART, SPI or I²C peripheral interfaces and integration of an ADC and up to 16 GPIOs, for connecting sensors, switches and status LEDs. The module operates from a 2.2 to 3.6V DC input voltage range and has an operating temperature range of –40 to +85 degree C.

Engineering samples are available now on request.


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