STMicroelectronics’ STM32 System-on-Chip boosts creation of smart devices with LoRa IoT connections

Powering the search for sustainability through smart infrastructure and logistics, smart industry and smart living, STMicroelectronics has revealed its LoRa system-on-chip (SoC) for connecting smart devices to the Internet of Things (IoT) using long-distance wireless connections.

The STM32WLE5 SoC 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.

Based on an Arm Cortex‐M4 core running at 48 MHz, and a sub-GHz radio based-on Semtech SX126x, the STM32WLE5 microcontroller is an open platform supporting LoRa, (G)FSK, (G)MSK and BPSK modulations. With its deep integration, the open architecture is optimized for Low-Power Wide Area Networks (LPWAN), legacy / proprietary protocols, flexible resource use, power management for a lower BOM cost and a better user experience.

Developed using the same technology as ST’s ultra-low-power STM32L4 microcontrollers, the STM32WL series provides a similar digital and analog peripherals set suitable for basic and complex applications requiring an extended battery life and a long RF range through a sub-GHz transceiver.

The STM32WLE5 line includes a range of communication features including up to 43 GPIOs, an integrated SMPS for power consumption optimization, multiple low-power modes to maximize battery life. A dual-power output and a wide linear frequency range ensure worldwide compatibility. In addition to its wireless and ultra-low-power features, STM32WL microcontrollers include embedded security hardware functions such as 128- / 256-bit AES hardware encryption, PCROP read / write protection, and public-key cryptography with an elliptic curve encryption engine.

“Our new wireless STM32 SoC extends the existing STM32W Wireless and simplifies new-product development while saving bill-of-materials costs and maximizing system reliability and energy efficiency,” said Ricardo De Sa Earp, Microcontroller Division General Manager, STMicroelectronics. “In addition, by leveraging the STM32 MCU architecture, we let developers easily introduce wireless connectivity in existing embedded designs by porting to the STM32WLE5.”

STM32WLE5 users are supported by ST’s rolling ten-year longevity commitment for industrial products.

The STM32WLE5 is available in a 5mm x 5mm 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. Please contact your nearest ST sales office for availability to OEM customers, pricing options, and sample requests.


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