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STMicroelectronics STM32U535VCT6

Name: STM32U535VCT6
Brand: STMicroelectronics
SKU: STM32U535VCT6
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32U535VCT6

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 100-LQFP

Datasheet:: STM32U535VCT6.pdf

Description:: IC MCU 32BIT 256KB FLASH 100LQFP

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Product details

Overview

STM32U535VCT6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M33 microcontroller with TrustZone® security, 240 DMIPS performance, 512 KB flash (ECC-enabled), 274 KB SRAM (64 KB with ECC), and integrated SMPS power management. It operates from 1.71–3.6 V across –40 °C to +85 °C and delivers 3.0 µA Stop 2 mode with 16-Kbyte SRAM-ideal for battery-powered IoT edge nodes requiring secure firmware updates and autonomous sensor processing.

For engineers reviewing the STM32U535VCT6 datasheet, STM32U535VCT6 pinout, STM32U535VCT6 application, or STM32U535VCT6 equivalent, key selection criteria include TrustZone-enforced peripheral isolation, LPBAM-enabled low-power peripheral autonomy in Stop 2, 14-bit 2.5-Msps ADC with hardware oversampling, CAN FD interface, and dual 12-bit DACs with sample-and-hold for analog control loops.

Technical Context

The STM32U535VCT6 implements a dual-bank flash architecture supporting read-while-write and 100 kcycle endurance, paired with ART Accelerator featuring 8-Kbyte instruction cache and 4-Kbyte data cache for zero-wait-state execution up to 160 MHz. Its FlexPowerControl architecture enables dynamic voltage scaling between LDO and SMPS regulators, with on-the-fly switching to optimize active and sleep-mode efficiency.

TrustZone security is implemented at silicon level with GTZC (Global TrustZone Controller) managing memory, peripheral, and I/O attribution across secure/non-secure worlds. Boot flow enforces root-of-trust via unique boot entry, HDP (Hide Protection Area), and SFI (Secure Firmware Installation) using embedded RSS (Root-Secure Services), enabling TF-M-based secure firmware upgrades.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M33 with TrustZone, FPU, MPU, and DSP extensions-enables secure real-time control with deterministic interrupt latency.
Max Clock / Performance	160 MHz / 240 DMIPS-supports high-throughput signal processing and multi-threaded RTOS workloads.
Flash Memory	512 KB with ECC, 2 banks, read-while-write-allows safe over-the-air firmware updates without halting operation.
SRAM	274 KB total, including 64 KB with ECC-provides robust data retention for critical variables and cryptographic keys.
Low-Power Modes	90 nA Shutdown, 370 nA Standby with RTC, 3.0 µA Stop 2 with 16-KB SRAM-extends battery life in intermittent-sensing applications.
Analog Peripherals	14-bit 2.5-Msps ADC (oversampling), dual 12-bit DACs, OPAMP with PGA, ultra-low-power comparator-enables precision sensor conditioning and closed-loop analog control.
Security Features	TrustZone, RDP, HDP, 96-bit UID, 512-byte OTP, HASH accelerator, NIST SP800-90B TRNG-meets PSA Level 3 and SESIP certification requirements.
Communication Interfaces	1× CAN FD, 4× I²C FM+, 5× USART/LPUART, 1× USB FS host/device, 1× SAI, OCTOSPI-supports mixed wired/wireless edge node connectivity and external memory expansion.

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 82 fast I/Os-most 5V-tolerant, up to 14 I/Os support independent supply down to 1.08 V for mixed-voltage system interfacing.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Core power supply and ground	Supports dual-regulator operation (LDO/SMPS); VDD must be ≥1.71 V for full functionality.
VDDA, VSSA	Analog domain supply and ground	Independent 1.62–3.6 V supply for ADC/DAC/OPAMP-ensures noise isolation from digital switching.
PA0–PA15, PB0–PB15, etc.	General-purpose I/Os	82 pins configurable as GPIO, alternate functions, or low-power wake-up sources; most tolerate 5 V inputs.
PC13–PC15	RTC oscillator pins	Connect 32.768 kHz crystal for calendar RTC operation with ±20 ppm accuracy over temperature.
PF0–PF1	OCTOSPI clock/data	Drive Octo-SPI interface for external NOR/NAND/DRAM-enables seamless code/data execution from external memory.
PD0–PD1	USART2 TX/RX	Default LPUART interface supporting low-power asynchronous communication down to Stop 2 mode.
PA11/PA12	USB_FS D+/D−	Differential USB 2.0 Full-Speed transceiver with internal PHY-eliminates need for external USB components.
NRST	Active-low reset input	Asynchronous reset pin with Schmitt trigger; supports external reset supervision and brown-out detection.

Key Features

Feature	Design Value
LPBAM (Low-Power Background-Autonomous Mode)	Enables DMA-driven peripheral chains (ADC→DMA→memory→timer) without CPU involvement-reduces active time by >90% in sensor logging.
FlexPowerControl with SMPS	Integrated step-down converter reduces core voltage dynamically; achieves 16.3 μA/MHz Run mode @ 3.3 V-cuts active power vs. LDO-only MCUs.
CORDIC + FMAC co-processors	Hardware acceleration for trigonometric and filter math-reduces FFT computation time by 4× vs. software-only on Cortex-M33.
Secure Firmware Installation (SFI)	Uses embedded Root-Secure Services (RSS) to validate and install signed firmware images-prevents unauthorized code execution at boot.
VBAT domain with backup SRAM	2-Kbyte backup SRAM and 32×32-bit registers retain state during main power loss-preserves RTC calendar and sensor calibration data.
Multi-speed internal oscillators	Two auto-trimmed 100 kHz–48 MHz RC oscillators (one LSE-trimmed to ±0.25%)-eliminates need for external crystals in cost-sensitive designs.

Applications

Smart Utility Meter

Wearable Health Monitor

Use Scenario: Battery-powered electricity/gas meter collecting pulse counts, temperature, and tamper events over 10+ years.

IC Role / Device Role / Timing Role: Main MCU executing metrology algorithms, managing secure OTA updates, and maintaining RTC calendar in VBAT mode.

Use Value: 90 nA Shutdown current extends battery life beyond 15 years; TrustZone isolates metrology firmware from UI stack to prevent tampering.

Use Scenario: Continuous ECG/PPG monitoring with motion artifact correction and local anomaly detection.

IC Role / Device Role / Timing Role: Sensor hub aggregating analog front-end data, running CORDIC-based QRS detection, and buffering results in 64-KB ECC SRAM.

Use Value: 14-bit ADC with hardware oversampling achieves <1 LSB INL for sub-mV biopotential signals; LPBAM automates ADC→DMA→filter chain in Stop 2.

Industrial Wireless Sensor Node

Secure Access Control Terminal

Use Scenario: LoRaWAN node measuring vibration, humidity, and ambient light in factory environments with dust/moisture exposure.

IC Role / Device Role / Timing Role: Edge AI inference engine (TinyML) performing FFT + ML classification, then transmitting alerts via CAN FD or UART-to-modem.

Use Value: 274 KB SRAM hosts model weights and inference buffers; 3.0 µA Stop 2 mode enables 5-year battery life with hourly wake-ups.

Use Scenario: Door controller verifying NFC credentials, driving solenoid lock, and logging access events with tamper detection.

IC Role / Device Role / Timing Role: Secure root-of-trust MCU authenticating credentials via HASH-accelerated HMAC, managing encrypted event logs in backup SRAM.

Use Value: 96-bit UID + 512-byte OTP stores device-specific keys; active tampers detect enclosure breach and erase sensitive data within 10 µs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32U575VIT6	Higher flash (2 MB), larger SRAM (3 MB), added crypto accelerators (AES-GCM, PKA), same LQFP100 package	Targeted at complex secure boot + TLS stack execution; requires more PCB area for thermal dissipation	Select when needing >512 KB flash for dual-bank OTA or hardware PKA for ECDSA signature verification.
RA4M3GDB00FHI#AC0	Arm Cortex-M4F, 1 MB flash, 384 KB SRAM, no TrustZone, Renesas Secure Crypto Engine (not PSA-certified)	Lacks hardware-enforced secure world isolation; relies on software-defined trust boundaries	Choose only if existing Renesas toolchain investment outweighs need for PSA Level 3 certification and hardware root-of-trust.

Compared with STM32U535VCT6, the U575 offers greater memory headroom and dedicated crypto engines for TLS offload but increases BOM cost and thermal footprint; the RA4M3 provides comparable performance without hardware TrustZone, limiting suitability for certified secure boot or firmware attestation use cases.

Availability

STM32U535VCT6 is available at Aetrix Electronics and suitable for smart utility meters, wearable health monitors, industrial wireless sensor nodes, and secure access control terminals requiring stable component supply across extended product lifecycles.

Supply support for STM32U535VCT6 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and automotive semiconductors since 1987.

The STM32U5 series targets ultra-low-power, secure edge computing applications-specifically engineered for battery-operated IoT devices requiring PSA-certified security, sub-µA sleep modes, and integrated analog peripherals for sensor fusion.

FAQ

What is the maximum operating frequency and associated power consumption in Run mode?

The STM32U535VCT6 achieves 160 MHz maximum clock speed with 240 DMIPS performance. At 3.3 V supply, its typical Run mode current is 16.3 µA per MHz-translating to ~2.6 mA at full speed. This value assumes active ART cache, SMPS regulator enabled, and all peripherals disabled except core logic.

Does STM32U535VCT6 support hardware-based secure boot and firmware validation?

Yes. It implements a hardware-enforced secure boot chain starting from ROM-based first-stage bootloader (FSBL), validating signed firmware images using public-key cryptography. Root-of-trust is anchored in immutable HDP (Hide Protection Area) and 96-bit UID, with SFI (Secure Firmware Installation) leveraging embedded RSS services for trusted image installation.

Can the internal SMPS replace the external DC-DC converter in battery-powered designs?

Yes-the integrated SMPS supports input voltages from 1.71 V to 3.6 V and can directly regulate VCORE down to 0.76 V. It features on-the-fly switching with LDO for transient response, eliminating need for external DC-DC in most coin-cell or Li-ion applications where board space and BOM count are constrained.

How many wake-up pins are available in Standby mode, and what is their voltage tolerance?

The STM32U535VCT6 provides 23 dedicated wake-up pins in Standby mode, all supporting standard 5 V-tolerant logic levels (up to 5.5 V). These pins retain interrupt capability even with VDD powered down, enabling reliable external event detection while consuming only 200 nA total quiescent current.

STM32U535VCT6 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 100-LQFP

Series:: STM32U5

Packaging:: Tray

Product Status:: Active

Programmable:: -

Core Processor:: ARM® Cortex®-M33

Core Size:: 32-Bit

Speed:: 160MHz

Connectivity:: CANbus, I2C, IrDA, LINbus, SAI, SmartCard, SPDIF, SPI, UART/USART, USB

Peripherals:: Brown-out Detect/Reset, DMA, Motor Control PWM, POR, PWM, WDT

Number of I/O:: 82

Program Memory Size:: 256KB (256K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 274K x 8

Voltage - Supply (Vcc/Vdd):: 1.71V ~ 3.6V

Data Converters:: A/D 20x12/14b SAR; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32U535VCT6 FAQ

1.How can I place an order for STM32U535VCT6 through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32U535VCT6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32U535VCT6 reliable?

The price and inventory of STM32U535VCT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U535VCT6 is usually 5 days.

3.What payment methods are accepted for STM32U535VCT6?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U535VCT6 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32U535VCT6?

STM32U535VCT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32U535VCT6 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32U535VCT6?

For technical support, including STM32U535VCT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U535VCT6 requirements.

6.How does Aetrix verify that STM32U535VCT6 is sourced from the original manufacturer or authorized distributors?

All STM32U535VCT6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32U535VCT6 meets industry standards.

7.What is the process for return or replacement of STM32U535VCT6?

All STM32U535VCT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32U535VCT6, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32U535VCT6 part is unused and in its original packaging.

Return procedure for STM32U535VCT6:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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