STMicroelectronics STM32U585VIT6

Overview

STM32U585VIT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M33 32-bit microcontroller with TrustZone® security, 240 DMIPS performance, 2 MB Flash (ECC), 786 KB SRAM, and integrated crypto accelerators (AES, PKA, HASH, RNG). It operates from 1.71–3.6 V across –40 °C to +85 °C and delivers 4.3 µA Stop 3 mode with full SRAM retention-ideal for battery-powered IoT edge nodes requiring secure firmware updates and sensor fusion.

For engineers reviewing the STM32U585VIT6 datasheet, STM32U585VIT6 pinout, STM32U585VIT6 application, or STM32U585VIT6 equivalent, key selection criteria include TrustZone-enabled secure boot, LPBAM autonomous peripheral operation in Stop 2 mode, dual 14-/12-bit ADCs with hardware oversampling, Octo-SPI on-the-fly decryption, and USB Type-C®/PD controller integration.

Technical Context

The STM32U585VIT6 implements a dual-bank Arm Cortex-M33 core with MPU, FPU, and TrustZone® for hardware-isolated secure/non-secure execution environments. Its ART Accelerator includes 8 KB instruction cache and 4 KB data cache, enabling zero-wait-state execution at up to 160 MHz.

Power architecture integrates an SMPS step-down converter and LDO with dynamic voltage scaling and switch-on-the-fly capability. Low-power modes are orchestrated via FlexPowerControl, supporting LPBAM for DMA-driven autonomous peripheral operation down to Stop 2 mode and VBAT-supplied RTC with 32×32-bit backup registers.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with 52 general-purpose I/Os (most 5 V-tolerant), 14 I/Os with independent supply down to 1.08 V, and dedicated pins for TrustZone-secured peripherals including UCPD, OCTOSPI, and cryptographic accelerators.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power secure MCU applications.

Compared with STM32L562VET6 and LPC55S69JBD100, the STM32U585VIT6 uniquely combines USB Type-C PD controller, Octo-SPI on-the-fly decryption, and LPBAM autonomy-making it the only choice for secure, battery-powered devices requiring both external encrypted memory and bidirectional power negotiation.

Availability

STM32U585VIT6 is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial predictive maintenance nodes, and secure smart home gateways requiring stable component supply and long-term lifecycle assurance.

Supply support for STM32U585VIT6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in microcontrollers, power management, sensors, and automotive ICs-with over 40 years of embedded systems expertise.

The STM32U5 series targets ultra-low-power, security-critical edge applications-including IoT endpoints, medical wearables, and industrial sensors-by integrating TrustZone, advanced power gating, and hardware-accelerated cryptography into a single die.

FAQ

What is the maximum operating frequency and associated DMIPS rating of the STM32U585VIT6?

The STM32U585VIT6 runs at up to 160 MHz with an ART Accelerator delivering 240 DMIPS (Dhrystone 2.1). This performance is sustained with zero wait states thanks to its 8 KB instruction cache, enabling deterministic real-time execution for control loops and signal processing without external memory latency penalties.

How does the LPBAM (Low-Power Background Autonomous Mode) reduce system-level power consumption?

LPBAM enables peripherals like ADC, timers, and crypto accelerators to operate autonomously via DMA chaining in Stop 2 mode-without waking the CPU. For example, an ADC can sample, trigger a hash calculation, and store results in SRAM while the core remains powered down, cutting active current draw by >95% compared to polling-based architectures.

Which security certifications apply to the STM32U585VIT6, and what do they validate?

The STM32U585VIT6 is certified to PSA Certified Level 3 and SESIP3 (Security Evaluation Standard for IoT Platforms). These validate hardware-enforced TrustZone isolation, secure boot with immutable root of trust, tamper detection, and resistance to side-channel attacks-including DPA-resistant AES and PKA accelerators meeting NIST SP800-90B for TRNG entropy.

Does the STM32U585VIT6 support external memory interfaces, and if so, which types and security features are included?

Yes-it supports external memory via two Octo-SPI interfaces and one Flexible Static Memory Controller (FSMC) for SRAM, PSRAM, NOR, NAND, and FRAM. Critically, the OTFDEC engine performs real-time AES-128/256 decryption of Octo-SPI memory contents, ensuring firmware and data confidentiality without software overhead or external secure elements.