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STM32 SoC gives LoRa IoT connectivity a boost

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By eeNews Europe


The STM32WLE5 SoC lets product developers create devices such as remote environmental sensors, meters, trackers, and process controllers that help efficiently manage energy and resources

The SoC combines ST’s proven skills in ultra-low-power STM32 microcontroller design with a LoRa-compliant radio in one single-die and easy-to-use device. With multiple ST patents pending, namely for radio Power Management Architecture, the STM32WLE5 will ensure unique performance. ST’s LoRaWAN software for wireless network communications has passed all regional certifications for use worldwide. The STM32WLE5 is available in a 5x5mm UFBGA73 package. It is fully integrated into the market-proven STM32 ecosystem, including STM32Cube software support, as well as a LoRaWAN stack certified for all regions and available in source-code format.

next: it also supports Sigfox


The new device embeds a specially engineered radio based on Semtech SX126x that offers two power outputs: one up to 15 dBm and the other up to 22 dBm. Additionally, since the transceiver offers a linear frequency range from 150 MHz to 960 MHz, it is possible to use the STM32WL in every region of the world. For instance, European standards demand that LoRa systems use the lower output and a frequency of 868 MHz while North America can go up to 22 dBm and requires 915 MHz. Developers can thus tailor the STM32WL series to their particular region, optimize its performance, and easily open their system to other countries. Additionally, Being able to qualify one component for the STM32 MCU and the transceiver will save time and reduce the bill of materials as well as operating costs.
The sub-gigahertz transceiver of the STM32WL is compatible with LoRa, (G)FSK, (G)MSK, and BPSK modulation schemes. It’s easy to underestimate the scope of this feature. However, it means the STM32WL can run both a LoRaWAN stack, through LoRa modulation, and a Sigfox stack thanks to its support of Binary Phase Shift Keying (BPSK). Companies no longer have to choose between one or the other. Compatibility with (G)FSK and (G)MSK, and BPSK signifies that the STM32WL will also work with proprietary protocols that are popular among organizations looking to create unique solutions. Supporting all these modulations thus adds to the flexibility and international appeal of the STM32WL.

STMicroelectronics – www.st.com

LoRa development packs jump-start projects

 


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