ST releases the world's first LoRa SoC microcontroller STM32WL

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ST releases the world's first LoRa SoC microcontroller STM32WL [Copy link]

The world's first LoRa SOC chip - STM32WL is newly released

https://www.stmcu.com.cn/video/1519

Long-range wireless STM32WL microcontroller

The STM32WL SoC complements the STM32 RF connectivity portfolio by integrating a general-purpose microcontroller and a sub-GHz radio on the same chip.

^{Based on the Arm} Cortex ‐M4 core architecture, the STM32WL microcontrollers also support complex modulation – LoRa , (G)FSK, (G)MSK, BPSK – ensuring flexibility for wireless applications via LoRaWAN or any other suitable protocol in a fully open manner.

The STM32WL microcontrollers feature Semtech SX126x-based sub-GHz radios to address the needs of a wide range of low-power wide-area network (LPWAN) wireless applications in industrial and consumer Internet of Things (IoT).

The embedded sub-GHz transceiver can be equipped with a LoRaWAN radio stack as required ^. The
deep integration enables this innovative open architecture to optimally support LoRaWAN ^legacy /proprietary protocols, flexible resource usage, and power management, helping to reduce BOM costs and provide a better user experience.

Developed using the same technology as the ultra-low-power STM32L4 microcontrollers , the STM32WL series offers similar digital and analog peripherals for both basic and complex application use cases that require extended battery life and long RF range with its sub-GHz transceiver.

To ensure global compatibility, the STM32WL MCU uses dual power supply output and a wide linear frequency range to meet any unlicensed RF spectrum requirements.

In general, the STM32WL series is a pioneer in the STM32 product family in the field of sub-GHz wireless connectivity. It is easy to use and has reliable performance, making it very suitable for a wide range of industrial and consumer applications.

Wireless connectivity

NUCLEO-WL55JC1

The new device embeds a specially designed radio based on Semtech SX126x, which offers two power outputs: one up to 15 dBm and the other up to 22 dBm. In addition, since the transceiver offers a linear frequency range of 150 MHz to 960 MHz, the STM32WL can be used in all parts of the world. For example, European standards require LoRa systems to use a lower output and a frequency of 868 MHz, while North America may increase to 22 dBm and require 915 MHz. Therefore, developers can customize the STM32WL series for specific regions, optimize its performance, and easily open their systems to other countries. In addition, being able to qualify one component for both the STM32 MCU and the transceiver will save time and reduce bill of materials and operating costs.

The STM32WL’s gigahertz transceiver is compatible with LoRa, (G)FSK, (G)MSK and BPSK modulation schemes. It’s easy to underestimate the scope of this capability. However, because it supports binary phase-shift keying (BPSK), the STM32WL can run both the LoRaWAN stack and the Sigfox stack simultaneously with LoRa modulation. Companies no longer have to choose between one or the other. Compatibility with (G)FSK and (G)MSK as well as BPSK means the STM32WL will also be compatible with proprietary protocols that are popular among organizations looking to create unique solutions. Support for all of these modulations therefore increases the flexibility and international appeal of the STM32WL.

The STM32WLE5 microcontroller complies with the physical layer requirements of the LoRaWAN specification published by the LoRa Alliance . The provided LoRa , (G)FSK, (G)MSK and BPSK modulations can also be used for legacy/proprietary protocols.

The radio is suitable for systems that aim to comply with various radio regulations, including but not limited to ETSI EN 300 220, FCC CFR 47 Part 15, Chinese regulatory requirements, and Japanese ARIB T-108. The continuous frequency coverage range is 150 MHz~960 MHz, which can support all major sub-GHz ISM bands around the world.

System peripherals

The STM32WLE5 series includes a variety of communication functions, including up to 43 GPIOs, integrated SMPS for optimizing power consumption, and multiple low-power modes to maximize battery life. Dual power supply outputs and a wide linear frequency range ensure worldwide compatibility.

Security and ID

In addition to its wireless and ultra-low-power features, the STM32WL microcontrollers also include embedded security hardware features such as 128/256-bit AES hardware encryption, PCROP read and write protection, and public key encryption using an elliptic curve cryptographic engine.

Downloads:

DS13105_STM32WLE5xx单片机数据手册 (2.62 MB, downloads: 28)

AN5407_ STM32WL 系列微控制器的 RF 板布局优化.pdf (3.53 MB, downloads: 31)

PM0214_CortexM4内核的MCU和MPU单片机编程手册.pdf (2.61 MB, downloads: 15)

基于高级定时器的全桥移相PWM发波方案.pdf (366.22 KB, downloads: 13)

More information can be downloaded from ST official website: https://stmcu.com.cn/Designresource/load_design_resource/cat_code/document/pro_cat/STM32?filter_pro_cat=STM32WL&filter_pro_token=75efbfba331e0f4c886160b720e2a73d&filter_design_cat=document&filter_design_token=8e1603d413e6d40a1c3c8386a0a56a86