Expanded IoT security through benchmark PSA Level 4 Certification, a groundbreaking achievement by Silicon Labs.
In a significant milestone for the Internet of Things (IoT) security, Silicon Labs' Series 3 Secure Vault security subsystem on the SiXG301 System-on-Chip (SoC) has become the world's first to achieve PSA Level 4 certification. This certification, the highest level recognised by PSA Certified, signifies the most stringent assurance of protection against both current and emerging physical and cyber threats.
The PSA Level 4 certified SiXG301 SoC offers advanced resilience against sophisticated physical attacks such as laser fault injection, side-channel attacks, microprobing, and voltage manipulation. This level of security is crucial in the rapidly evolving IoT landscape, where devices are increasingly targeted by sophisticated attackers.
Unprecedented Security Level and Multi-Core Architecture
The SiXG301 SoC's PSA Level 4 certification marks a first-in-market achievement, signifying an unprecedented level of security for an SoC. Incorporating a ARM Cortex-M33 core running up to 150 MHz for application tasks, the SoC also features dedicated cores for radio and security processing. This multi-core architecture enables robust real-time security operations while supporting complex connectivity protocols like Zigbee and Matter over Thread simultaneously.
Longevity and Future-Proofing
The SiXG301 SoC is engineered to maintain security integrity over more than a decade in deployment. Its defences are designed not only for current attacks but also anticipated future sophisticated threats. This design philosophy supports ongoing security through over-the-air firmware/software updates and real-time threat monitoring.
Enhanced Memory Capacity and Manufacturing Efficiency
The SiXG301 SoC also boasts up to 4MB Flash and 512kB RAM, facilitating demanding applications, reducing SKU complexity for manufacturers, and improving end-user experience by supporting simultaneous multi-protocol operation on a single device. Furthermore, its integration supports smart home device markets, such as LED lighting, with simplified design and reduced bill of materials due to features like a single-wire PIXELRZ communication interface and LED pre-driver capabilities.
Compliance and Regulatory Readiness
The SiXG301 SoC's Secure Vault assists device manufacturers in meeting current and emerging regulatory frameworks, such as the EU’s Radio Equipment Directive (RED), helping accelerate market readiness through expert guidance and independent lab validation.
A Holistic, Lifecycle-Based Security Approach
The Series 3 Secure Vault and SiXG301 SoC represent a holistic, lifecycle-based security approach, delivering unmatched protection, operational flexibility, and compliance support for advanced IoT applications in smart homes and connected devices.
Silicon Labs, the leading innovator in low-power wireless connectivity, is ready to help device makers align with emerging global regulations such as the EU's Radio Equipment Directive (RED), US Cyber Trust Mark, and Singapore's Cybersecurity Labeling Scheme (CLS).
For more information about Silicon Labs' security offerings, visit Silicon Labs Security Overview, Silicon Labs' CTO blog: Silicon Labs' Proven History of Firsts in IoT Security, Silicon Labs Custom Part Manufacturing Service (CPMS), and Silicon Labs Matter Developer Journey.
Silicon Labs' holistic approach to security and expert guidance gives product teams a head start on regulatory readiness and consumer trust, backed by independent lab validation. The company is headquartered in Austin, Texas, and has operations in over 16 countries, serving the smart home, industrial IoT, and smart cities markets.
All Series 3 devices are planned to feature this industry-leading enhanced security foundation. The SiXG301 is expected to be the first Series 3 device to market with PSA Level 4 certification when it becomes generally available in Q3 2025. Developers can register for an upcoming webinar, "Stay Ahead of Global IoT Security Regulations with Silicon Labs," to learn how to integrate RED-ready security into their products.
- The PSA Level 4 certified SiXG301 System-on-Chip (SoC) not only assures protection against current and emerging cyber threats in IoT, but also against physical attacks like laser fault injection, side-channel attacks, microprobing, and voltage manipulation, thanks to its advanced technology.
- To ensure longevity and future-proofing, the SiXG301 SoC's security defences are designed not only for current attacks but also for anticipated future sophisticated threats, supporting ongoing security through over-the-air firmware/software updates and real-time threat monitoring, as part of a holistic, lifecycle-based security approach.
