Miromico Unveils the "World's Smallest" LoRaWAN Module, the FMLR-6x-x-MA62x

Measuring just 8.6mm by 9.3mm (0.34" by 0.37"), the Maxim-powered module offers extremely low power operation.

IoT specialist Miromico AG claims to have developed the world's smallest LoRaWAN module with integrated Arm Cortex-M4 microcontroller, unveiled this week at Embedded World 2020.

Dubbed, somewhat awkwardly, the FMLR-6x-x-MA62x Module, Miromico's latest design is built around the Maxim MAX23625/26 microcontroller — giving it an Arm Cortex-M4 running at up to 96MHz from the internal oscillator of as low as 4MHz from a low-power system clock, 512kB of flash memory, 160kB of static RAM, 9kB of instruction cache, and extremely low power operation — down as low as 49µA/MHz when executing from flash and 2.56µW in data-retaining sleep mode.

Wireless connectivity is provided through a Semtech SX1261 or SX1262 wireless transceiver, with full support for the increasingly popular LoRaWAN low-power long-range wide area network protocol with up to 20dBm transmission and -137dBm receive sensitivity.

Measuring 8.6mm by 9.3mm (around 0.34" by 0.37"), Miromico is positioning the module as "to the best of our knowledge the smallest LoRaWAN module ever produced." For ease of use during the prototyping stages, an daughterboard adds a Hirose U.FL antenna connector, additional external flash storage, and extra sensors.

While Miromico has unveiled the module and daughterboard at Embedded World, it's not quite ready to put it up for sale: The company has stated only that it will be distributing the module and a compatible starter kit to "alpha clients" this week, with no word on commercial availability.

More information can be found on the company's official product page.

Gareth Halfacree
Freelance journalist, technical author, hacker, tinkerer, erstwhile sysadmin. For hire: freelance@halfacree.co.uk.
Related articles
Sponsored articles
Related articles