ST introduces an industry-first autotuning feature on the ST31R480 secure microcontroller. Software and OS developers can now create fully interoperable smartcards while automatically optimizing energy harvesting.
Interoperability meets energy harvesting
The ST31R480 now comes with an innovative smart autotuning feature. This secure MCU automatically adjusts itself to match the frequency of the reader while optimizing energy harvesting in various field conditions. This feature addresses two significant challenges: in high field environments, the chip limits the loading effect behavior to prevent overloading, while in low field environments, it maximizes energy harvesting to ensure efficient operation. Previously, developers had to compromise between these two behaviors. This smart autotuning feature delivers optimal performance in both scenarios.
Simplifying the development process for software engineers
The ST31R480's smart autotuning capability offers numerous advantages for software and OS developers, including simplifying the development process by automating frequency adaptation. Developers can also maximize energy harvesting and enhance interoperability at low field levels without the need for additional software development or compromise. And the benefits don't stop there. Traditionally, the natural dispersion in antenna production required extensive adjustments. This smart autotuning feature addresses this issue head-on, automatically handling all necessary adjustments. For card manufacturers, this innovation means a faster and more streamlined production process. With the ST31R480, every card produced offers consistent, top-tier performance.
How the new ST31R480 elevates the user experience
End users will benefit from the ST31R480's new autotuning feature, which ensures 100% interoperability by adapting to different types of readers and conditions. The chip can adapt its frequency to various ecosystems and readers worldwide. The best part for end users? The ST31R480 enables a greater operating distance, enhancing user convenience.
Request samples
The ST31R480 secure MCU is already EMVCo and CC certified. Samples will be available in May 2025. Contact your ST's local sales office to request samples.
Additional resources
First published on Apr 16, 2025
