Nordic Semiconductor's nRF52840 system-on-chip (SoC) is a groundbreaking device that offers dynamic multi-protocol capabilities, allowing it to support both Thread and Bluetooth 5 wireless connectivity simultaneously. This means that users can connect to both networks without the need to disconnect one before switching to another. This feature ensures seamless interoperability between Thread products based on the nRF52840 SoC and Bluetooth 5 devices, making it ideal for complex IoT applications.
The nRF52840 SoC has been certified as Thread 1.1 compliant, passing all required tests to ensure reliable performance in real-world scenarios. It supports Bluetooth 5 connectivity and is built on Nordic’s nRF5 SDK for Thread, which includes the S140 v5 protocol stack for low-power Bluetooth and the OpenThread RF protocol stack. This combination allows developers to create applications that leverage both technologies efficiently.
As the only multi-protocol SoC available on the market, the nRF52840 stands out by supporting both Thread and Bluetooth 5 through its advanced 'Dynamic Multi-Protocol' capabilities. This enables simultaneous operation of the S140 v5 and OpenThread stacks, ensuring smooth communication between devices without interference. Developers no longer have to worry about managing connections manually, as the low-level drivers handle the complexity behind the scenes.
Pnr HÃ¥kansson, Product Marketing Manager at Nordic Semiconductor, emphasized the importance of this innovation: “The nRF52840 acts as a bridge between Thread and Bluetooth 5 networks, enabling devices like smartphones to communicate with wireless sensors via both protocols at the same time. Data exchange happens directly without relying on a cloud network.â€
While not a true simultaneous connection, the nRF52840’s implementation is so fast and seamless that it feels as though both protocols are running concurrently. This makes it easier for developers to design applications that take full advantage of both technologies.
Thread is designed to provide a secure, reliable, and scalable way to connect smart devices in homes and workplaces. It supports IPv6 and 6LoWPAN, ensuring compatibility with modern IP-based networks. With strong security features like AES encryption and smartphone-level authentication, Thread is an ideal choice for IoT applications requiring high reliability.
The Thread Group, a non-profit organization, focuses on promoting the benefits of Thread across various industries. Its certification process ensures that products meet high standards for performance and user experience. Key applications include home automation, smart appliances, access control, lighting, healthcare, and more.
Jonathan Hui, OpenThread technology leader at Nest, praised Nordic’s contributions: “Nordic continues to be a key player in supporting OpenThread. The fast Thread certification path for the nRF52840 confirms the advantages of OpenThread’s open-source approach, portability, and optimized footprint.â€
Grant Erickson, President of the EDGE Group, added: “Nordic has been a long-time supporter of the Thread Group, and its contributions have helped shape the future of IoT. The Thread-certified nRF52840 meets growing demand for low-power IP mesh networks, connecting hundreds of devices seamlessly.â€
Geir Langeland, Director of Sales and Marketing at Nordic Semiconductor, said: “We believe Thread is becoming a leading wireless technology in home IoT. Our investment in ultra-low power R&D and the development of the OpenThread software stack ensures the nRF52840 is fully certified for both Bluetooth 5 and Thread 1.1, empowering developers to build complex IoT solutions.â€
**Dynamic Multi-Protocol Technology**
Previously, Nordic’s nRF5 SDK for Thread used a switch-based solution for multi-protocol support, which required stopping one protocol before activating another. While simple to implement, this method couldn’t support concurrent operations.
With the latest version of the nRF5 SDK (v0.10.0), Nordic introduced a dynamic multi-protocol solution that allows parallel operation of Bluetooth Low Energy (via the S140 v5 protocol stack) and Thread (via OpenThread). This ensures both protocols can share the radio hardware, maintaining stable connections without interference.
Nordic firmware automatically manages time allocation between protocols, so developers can focus on building applications rather than handling low-level details. Whether using Bluetooth or Thread, the nRF52840 provides a powerful platform for developing next-generation IoT devices.
For more information, visit:
- [About nRF52840](http://tinyurl.com/nRF52840)
- [nRF5 SDK for Thread](http://thread)
- [Thread Group](https://www.threadgroup.org)
- [OpenThread](https://openthread.io)
- [Nordic Semiconductor ASA](http://tinyurl.com/NordicSemi-sc)
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