mioty silicon boost from ST

April 23, 2021 // By Nick Flaherty
mioty silicon boost from ST
STMicroelectronics adds mioty stack developed by authorised partner Stackforce to its STM32WL multi-modulation radio SoC

Mioty, the latest low power IoT protocol, has seen a significant boost with support from STMicroelectronics.

ST has added a mioty stack developed by partner Stackforce to its STM32WL multi-modulation radio SoC alongside LoRaWAN, Sigfox and wm-bus.

Mioty, developed by Fraunhofer in Germany, is designed for large scale, low power IoT deployments in the sub-GHz unlicensed radio bands that have a longer range but lower data rates than 2.4GHz wireless technologies such as Bluetooth or WiFi. However so far it has had one public semiconductor supplier, Texas Instruments, although it can be added to LPWAN systems from Murata.

The protocol sends messages using a telegram-splitting technique, which is recognized and standardized by the European Telecommunication Standards Institute (ETSI). This ensures extremely short radio transmissions that allow extended operation without the logistical challenges of replacing batteries in massive IoT networks. Short transmissions also minimize interference with nearby signals and allow many thousands of mioty nodes to coexist on the same network.

mioty data packets can travel several kilometers in built-up areas and more than 15km with line of sight, allowing just a few base stations to cover large industrial sites or outdoor areas such as oilfields. In addition, mioty devices can communicate while moving at up to 120km/h without signal-fading issues, serving applications such as fleet management, asset tracking, and theft detection.

“mioty promises to make exciting new Massive IoT applications possible, for instance, to cover a large geographical area,” said Hakim Jaafar, STM32 Wireless Marketing Director, STMicroelectronics. “The mioty stack further strengthens the ecosystem around our STM32WL SoC, which supports various common sub-GHz LPWAN technologies such as LoRaWAN, Sigfox, and wM-Bus, and delivers a unique level of integration that saves space, power, and time to market.”

The mioty protocol stack for the STM32WL has been developed by Stackforce, a founding member of the mioty Alliance and ST Authorized Partner. The stack is available as a library for direct application integration or firmware, ready to be flashed directly onto the SoC for modem-like use.

“The STM32WL has already proved to be a very powerful platform, especially regarding support for multi-protocol stacks. We’re thrilled to add mioty, a promising new LPWAN technology, to the interesting portfolio of (multi-)protocol stacks for STM32WL,” said David Rahusen, Managing Director, Stackforce.

A key point for large IoT roll outs is that the STM32WL is included in ST’s 10-year longevity program, which guarantees long-term availability to support developers of industrial products.

www.st.com/stm32wl

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