DediProg Becomes the First in Taiwan to Support Mass Programming of the ST STM32H5 Series Secure MCU

December 12, 2025, Taiwan – DediProg Technology, a leading provider of IC programming solutions, today announced that its automated programming products now fully support the STM32H503/563/573 series microcontrollers (MCUs) from STMicroelectronics (ST). Having successfully passed ST’s rigorous three-stage functional verification, DediProg is the first in Taiwan to provide programming solutions for mass production of this advanced security MCU series. This demonstrates DediProg’s expertise in next-generation chip support, enabling customers to deploy these MCUs confidently and accurately at scale.

Security Features and Challenges in STM32H5 MCU Programming
The STM32H5 series is built around a 32-bit Arm® Cortex®-M33 core running at up to 250 MHz, delivering a highly desirable combination of high performance, enhanced security, and cost-effectiveness. The series features 2 MB dual-bank flash memory, with support for advanced security architectures such as Arm® TrustZone®, as well as high-speed AES co-processors, PKI support, and multiple memory protection mechanisms, making them a robust solution for IoT, industrial control, and consumer electronics applications.

Notably, the STM32H573 meets Arm PSA Certified Level 3 and SESIP Level 3 IoT platform security standards, providing resistance against side-channel attacks, hardware-level intrusion, and software exploits. This ensures the security of critical data and firmware, demonstrating exceptional capabilities in data protection, anti-tampering, and firmware isolation design.

As a high-security MCU series, the STM32H5 requires programming to follow strict protocols and validation standards, posing significant challenges for developing programming support. Secure programming depends on correctly configuring of all security features, including memory partitioning for secure areas, writing public keys and certificates to the Option Byte Key (OBK) file, deploying secure boot programs, and properly executing the overall security verification process. Any misconfiguration can disable security features or interrupt programming, requiring reconfiguration or reprogramming and potentially affecting mass production efficiency.

Validated Solution Accelerates Mass Production
Through close collaboration with ST, DediProg implemented programming support for the STM32H5 series. The solution has passed ST’s stringent three-stage functional verification, including key writing, certificate writing, and multiple certificate writing. This achievement reflects our engineering team’s deep understanding of programming software, experience with Secure Boot procedures, and integration capabilities with platform libraries from partners such as ST and Arm. The results confirm that DediProg programmers can reliably and accurately handle complex secure feature programming in high-speed mass production, ensuring smooth ramp-up and high yields.

Complete Secure Programming for High-End Applications 
The rapid global growth of the IoT and automotive industries continues to drive market demand for high-security chips. To meet this evolving landscape, DediProg is committed to the continuous development of secure programming solutions, with initiatives such as exploring support for the next-generation ST STM32H7 series MCU. Our solutions provide reliable, industry-leading programming support, enabling customers in IoT, automotive, medical, and consumer electronics to meet stringent security standards in mass production.

About STMicroelectronics
At ST, we are 50,000 creators and makers of semiconductor technologies mastering the semiconductor supply chain with state-of-the-art manufacturing facilities. An integrated device manufacturer, we work with more than 200,000 customers and thousands of partners to design and build products, solutions, and ecosystems that address their challenges and opportunities, and the need to support a more sustainable world. Our technologies enable smarter mobility, more efficient power and energy management, and the wide-scale deployment of cloud-connected autonomous things. We are on track to be carbon neutral in all direct and indirect emissions (scopes 1 and 2), product transportation, business travel, and employee commuting emissions (our scope 3 focus), and to achieve our 100% renewable electricity sourcing goal by the end of 2027. Further information can be found at www.st.com.

About DediProg
Founded in 2005, DediProg is a leading brand of global IC programming solutions, providing a variety of products including automated programming systems, manual programmers and IC test sockets. Adhering to the concept of "development for users," DediProg continues to improve chip programming technology and expand into programming services along with encrypted programming services. DediProg Technology has service locations all over the world to ensure that customers receive efficient, safe and timely solutions and technical support. For more information about DediProg, please visit www.dediprog.com.

 

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E-mail: sales@dediprog.com