STMicroelectronics (ST), a global semiconductor company supporting diverse electronic applications and customers, has recognized the security excellence of its general-purpose secure microcontrollers.

ST announced today that its general-purpose STM32U585 secure microcontroller recently achieved PSA Certified Level-3 and SESIP3 certification, passing logic, board, and basic physical resistance tests that validate a high level of cyber-protection.

With enhanced tamper-proofing and software protection features, the STM32U585 is also suitable for controlling PIN Transaction Security (PTS) devices that must meet Payment Card Industry Security Standards Council (PCI SSC) requirements.

The STM32U585 secure, general-purpose microcontroller simplifies the design and production of point-of-sale (POS) and self-service payment terminals by providing an all-in-one solution.

To be recognized as an official PTS-approved device, it typically requires a separate microcontroller (MCU) to manage functions such as the keyboard, display, and USB connectivity, along with a dedicated security chip to prevent online and side-channel attacks. The STM32U585 integrates all these features to simplify design and streamline production logistics, from purchasing and inventory management to final assembly.

Additionally, terminal manufacturers can more easily and quickly test and certify their products to applicable standards such as PCI PTS v6.

The STM32U585 complies with Arm® Trusted Base System Architecture (TBSA) requirements and features the Arm TrustZone® architecture. It also includes a number of common security features supporting connected devices, including cryptographic accelerators, secure data storage, secure firmware installation, secure boot, and secure firmware updates.

Additional security features enhance cyber protection compared to typical general-purpose MCUs. Internal monitoring erases confidential data in the event of a perturbation attack, helping meet PCI SSC requirements for POS applications. Enhanced protection includes Side-Channel Analysis (SCA), hardware-unique keys for secure data storage, and built-in active tamper detection, which strengthens symmetric and asymmetric public-key accelerator (AES, PKA) encryption against attacks.

The STM32U585 delivers high core performance and integrated peripherals while ensuring superior cyber protection in cost- and power-sensitive connected devices. It features a state-of-the-art Arm Cortex®-M33 embedded core along with two analog-to-digital converters (ADCs), two digital-to-analog converters (DACs), two operational amplifiers (OPA), two comparators, and multiple timers, including a general-purpose, low-power PWM motor-control timer. ST's advanced 40nm process technology and unique features reduce power and significantly improve performance. These include autonomous peripherals that operate while the main circuit is in sleep mode to conserve energy, and an optional voltage regulator that reduces dynamic power consumption to 19μA/MHz.

The STM32U585, a general-purpose secure MCU within the STM32 portfolio, is a key element of ST's STM32Trust roadmap. STM32Trust is ST's security framework that combines expertise, STM32 MCUs and MPUs, STSAFE Common Criteria (CC)-certified secure elements, tools, hardware and software, and design services. It helps developers secure their designs and ensure secure connectivity and system integrity.

The STM32U585 is currently in production, housed in a 7mm x 7mm UFBGA169 package. For pricing information and sample requests, please contact your local ST representative.