NewsSTMicroelectronics’ STM32U5 General-Purpose Microcontrollers Achieve PSA Certified Level-3 and SESIP3 Security Certifications

STMicroelectronics’ STM32U5 General-Purpose Microcontrollers Achieve PSA Certified Level-3 and SESIP3 Security Certifications

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STMicroelectronics announced that it has been awarded the PSA Certified Level-3 certification and SESIP 3 certification for its general-purpose secure STM32U585* microcontroller. These certificates have passed tests for basic physical, logical and board resistances, which confirms a high level of cyber security.

The STM32U585 has enhanced tamper resistance, software protection, and is suitable for controlling PIN Transaction Security equipment (PTS), which must meet Payment Card Industry Security Standards Council’s (PCI SSC). requirements. The STM32U585 is a general-purpose, secure microcontroller that makes it easy to design and produce Point-Of-Sale terminals and self-service payment terminals.

To be officially recognized as a PTS Approved device, you will need a dedicated security chip that can resist side-channel and online attacks. A separate microcontroller (MCU), which manages features like the keyboard, display and USB connection, is also required. All these capabilities can be combined with the STM32U585, allowing for a simplified design that streamlines production logistics, from inventory management and purchasing to final assembly. The terminal makers can test and certify products to PCI PTS version 6 more quickly and easily.

The STM32U585 meets Arm(r), Trusted Base System Architecture requirements (TBSA), and has Arm TrustZone(r). There are many security features that can be added to connected devices, such as cryptographic accelerators and secure data storage. Secure firmware installation, boot security, and secure firmware updating are all included.

Cyber protection is enhanced by additional security features that go beyond the standard general-purpose MCUs. Internal monitoring, which erases sensitive data in the case of a perturbation attack and contributes to meeting PCI SSC requirements. Further protection is provided by hardening encryption of symmetrical and asymmetric public key accelerators (AES and PKA) against attacks using side-channel analysis. (SCA), which provides a hardware unique code for secure data storage and has built-in active detection.

The STM32U585 provides superior cyber protection for power- and cost-conscious connected devices. It also offers high-end core performance, peripheral integration and high-end core performance. Arm Cortex(r),-M33’s embedded core is complemented by rich peripherals such as two analog-todigital converters. (ADCs), two digital–toanalog converter. (DAC) channels. Multiple timer channels include general-purpose, low power, and PWM motor control timers. ST’s proprietary features and advanced 40nm process technology help to reduce power consumption and improve performance. To save energy, autonomous peripherals can be used to operate in the background to save power and selectable voltage regulators reduce dynamic consumption to below 19uA/MHz.

The STM32U585 MCU is a secure general-purpose MCU that can be used in all STM32 products. It is an important part of ST’s STM32Trust program. STM32Trust, ST’s security framework, brings together knowledge, STM32MCUs and MPUs as well as STSAFE common criteria-certified secure elements, tools and software. This allows developers to protect their designs and ensure system integrity and secure connectivity.

The STM32U585 can be ordered in a package of 7 x 7 mm UFBGA169. For sample requests and pricing information, please contact your ST sales office.

For more information about STM32U5 MCUs please visit

Michal Pukala
Electronics and Telecommunications engineer with Electro-energetics Master degree graduation. Lightning designer experienced engineer. Currently working in IT industry.