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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM32U535CCT6Q

Name: STM32U535CCT6Q
Brand: STMicroelectronics
SKU: STM32U535CCT6Q
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32U535CCT6Q

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 48-LQFP

Datasheet:: STM32U535CCT6Q.pdf

Description:: IC MCU 32BIT 256KB FLASH 48LQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STM32U535CCT6Q 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 converter. It operates from 1.71 V to 3.6 V across –40 °C to +125 °C and delivers 4.6 µA Stop 2 mode with full SRAM-enabling battery-powered industrial sensors and secure edge nodes.

For engineers reviewing the STM32U535CCT6Q datasheet, STM32U535CCT6Q pinout, STM32U535CCT6Q application, or STM32U535CCT6Q equivalent, key selection criteria include TrustZone-enabled secure boot, LPBAM autonomous peripheral operation in Stop 2, 14-bit 2.5-Msps ADC with hardware oversampling, CAN FD interface, and UFBGA64 (5 × 5 mm) package compatibility with high-density PCB layouts.

Technical Context

The STM32U535CCT6Q implements a dual-bank flash architecture supporting read-while-write and 100 kcycle endurance, paired with ART Accelerator (8-KB instruction cache + 4-KB data cache) enabling zero-wait-state execution at up to 160 MHz. Its FlexPowerControl system integrates an embedded LDO and configurable SMPS step-down converter with on-the-fly voltage scaling.

TrustZone® establishes hardware-enforced isolation between secure and non-secure worlds, governing access to memories, peripherals (e.g., RNG, HASH, OCTOSPI), and debug interfaces via the Global TrustZone Controller (GTZC). The device supports secure firmware installation (SFI) and TF-M–based firmware upgrades, with root-of-trust anchored by unique boot entry and HDP protection.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M33 with TrustZone®, FPU, MPU, and DSP extensions-enables real-time deterministic control with hardware-isolated secure execution environments.
Max Clock / Performance	160 MHz / 240 DMIPS-achieved with ART Accelerator cache; supports 0-wait-state flash execution for deterministic latency-critical tasks.
Memory	512 KB flash (ECC, 2-bank RWW), 274 KB SRAM (64 KB with ECC)-supports robust firmware updates and data integrity in safety-critical applications.
Low-Power Modes	90 nA Shutdown, 370 nA Standby with RTC, 4.6 µA Stop 2 with full SRAM-enables multi-year battery life in always-on sensor nodes.
Analog Peripherals	14-bit 2.5-Msps ADC (hardware oversampling), dual 12-bit DAC, OPAMP with PGA, ultra-low-power comparator-supports precision signal acquisition without external signal conditioning.
Communication	1 CAN FD, 5 USART/LPUART, 4 I²C FM+, 3 SPI, 1 USB FS host/device, 1 SAI, SDMMC, OCTOSPI-enables mixed wired/wireless edge gateway connectivity.
Security	TrustZone®, 96-bit UID, 512-byte OTP, HASH accelerator, NIST SP800-90B–compliant TRNG, tamper detection-meets PSA Level 3 and SESIP certification prerequisites.

Pinout & Package

STM32U535CCT6Q uses a 64-pin UFBGA package (5 × 5 mm, 0.5 mm pitch) with 51 user I/Os, including 14 low-voltage I/Os (1.08 V–3.6 V supply), most 5 V-tolerant. Pin functions support flexible peripheral remapping via SYSCFG and alternate function registers.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Core & I/O power supply / ground	Dual-supply domains: VCORE (1.1 V internal) and VDD (1.71–3.6 V); enables independent I/O voltage scaling down to 1.08 V for interfacing with legacy logic.
PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15	General-purpose I/Os	Up to 51 fast GPIOs with interrupt capability; 14 support independent V_DDIO2 supply for mixed-voltage system integration.
NRST	Active-low reset input	Asynchronous reset with internal pull-up; supports external reset assertion and programmable reset timing via RCC.
BOOT0	Boot mode selection	High at power-up selects system memory boot; used with BOOT1 to configure flash, SRAM, or system memory startup vector.
SWCLK, SWDIO	Serial Wire Debug interface	2-pin debug port supporting SWD; compatible with ST-LINK/V2-1 and J-Link; supports secure debug access control via TrustZone.
VBAT	Backup domain power supply	Supplies RTC, 32 × 32-bit backup registers, and 2 KB backup SRAM during main power loss-enables timekeeping and state retention in shutdown.

Key Features

Feature	Design Value
LPBAM (Low-Power Background Autonomous Mode)	Enables DMA-driven peripheral chains (e.g., ADC → memory → timer → GPIO) without CPU wake-up-reduces active time in Stop 2 mode by >90%.
FlexPowerControl with SMPS	Integrated step-down converter replaces external DC/DC; achieves 85% efficiency at 100 mA and supports dynamic voltage scaling between Run and Stop modes.
ART Accelerator with dual cache	8-KB instruction cache + 4-KB data cache eliminates flash wait states and accelerates external memory access-critical for real-time audio and sensor fusion.
Secure Root of Trust	Hardware-enforced boot validation using immutable ROM code, HDP-protected secure hide area, and one-time programmable keys-prevents unauthorized firmware injection.
Ultra-low-power analog subsystem	14-bit ADC with 2.5-Msps sampling and hardware oversampling (up to 16×), plus autonomous operation in Stop 2-enables continuous sensor monitoring at <1 µA average current.

Applications

Industrial Sensor Node

Secure Edge Gateway

Use Scenario: Wireless temperature/humidity/pressure node deployed in factory automation with 10-year battery life requirement.

IC Role / Device Role / Timing Role: Main controller executing sensor fusion, LPBAM-managed ADC sampling, and BLE/Wi-Fi offload via UART; RTC maintains time-stamped logs during deep sleep.

Use Value: 90 nA Shutdown and 370 nA Standby with RTC enable multi-year operation; TrustZone isolates BLE stack from sensor firmware to prevent remote exploit propagation.

Use Scenario: Field-deployable IIoT gateway aggregating Modbus RTU, CAN FD, and analog inputs before forwarding to cloud via TLS-secured MQTT.

IC Role / Device Role / Timing Role: Central secure processing unit running TF-M–based PSA Certified OS; handles CAN FD frame parsing, TLS 1.3 handshake acceleration via HASH+TRNG, and secure OTA updates.

Use Value: Integrated SMPS reduces BOM cost vs. discrete DC/DC; 512 KB flash with ECC ensures firmware integrity across 10k+ field updates; OCTOSPI supports external encrypted XIP code storage.

Medical Wearable

Smart Utility Meter

Use Scenario: CE-certified ECG patch with motion artifact compensation, local arrhythmia detection, and encrypted Bluetooth LE transmission.

IC Role / Device Role / Timing Role: Real-time signal processor using CORDIC/FMAC for QRS detection and OPAMP+PGA for front-end amplification; SecureMark™-TLS validates cloud identity pre-transmission.

Use Value: 14-bit ADC with hardware oversampling achieves >100 dB SNR at 1 kSPS; 274 KB SRAM hosts dual-buffered waveform buffers and ML inference model weights.

Use Scenario: EN 13757-compliant water/gas meter with tamper detection, lifetime logging, and PLC/GPRS backhaul.

IC Role / Device Role / Timing Role: Tamper-aware controller managing TAMP peripheral, RTC calendar, backup SRAM, and AES-128 encryption for consumption data; VBAT sustains RTC during main power disconnect.

Use Value: Active tamper pins detect enclosure breach and trigger immediate SRAM wipe; 512-byte OTP stores metrology calibration constants; ULPMark™-PP score of 125 confirms sub-µA active sensing.

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
STM32L562VET6	Lacks SMPS, lower max clock (110 MHz), no CORDIC/FMAC, 512 KB flash but only 256 KB SRAM, no OCTOSPI	Suitable for cost-sensitive secure IoT nodes without intensive math or external memory needs	Select when power efficiency >100 nA Shutdown is critical and external memory expansion is unnecessary.
NXP LPC55S69JBD100	Arm Cortex-M33 with TrustZone, 150 MHz, 640 KB flash, 320 KB SRAM, no SMPS, no LPBAM, different peripheral mix (no CAN FD, no OCTOSPI)	Better suited for audio-centric edge AI with dual-core asymmetric processing	Choose when dual-core M33 + dedicated DSP co-processor outweighs STM32U5's ultra-low-power analog and LPBAM advantages.

Compared with STM32L562VET6, the STM32U535CCT6Q delivers 45% higher performance per µA in Run mode and adds SMPS-based power optimization; versus LPC55S69JBD100, it provides superior low-power autonomy (LPBAM), integrated tamper detection, and CAN FD-making it optimal for battery-powered industrial telemetry.

Availability

STM32U535CCT6Q is available at Aetrix Electronics and suitable for industrial sensor nodes, secure edge gateways, medical wearables, and smart utility meters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for STM32U535CCT6Q 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 with focus on energy efficiency and security.

The STM32U5 series targets ultra-low-power, high-security embedded applications-including industrial IoT, medical devices, and smart infrastructure-by integrating TrustZone, SMPS, and LPBAM into a single scalable MCU platform.

FAQ

What is the maximum operating temperature range for STM32U535CCT6Q?

The STM32U535CCT6Q is qualified for operation from –40 °C to +125 °C ambient temperature, meeting industrial and extended-temperature requirements. This rating is validated per JEDEC JESD47 and applies to all operating modes including Run, Stop, and Shutdown, with thermal derating applied above 85 °C for sustained high-current peripheral use.

Does STM32U535CCT6Q support hardware-accelerated TLS?

Yes-it integrates a HASH cryptographic accelerator and NIST SP800-90B–compliant True Random Number Generator (TRNG), enabling efficient TLS 1.2/1.3 handshake execution. When combined with TF-M and PSA Certified software stacks, it achieves SecureMark™-TLS score of 13,700, confirming hardware-accelerated crypto performance.

How many I/O pins support independent 1.08 V supply?

14 GPIOs (grouped as PG0–PG13) support independent V_DDIO2 supply down to 1.08 V, enabling direct interfacing with low-voltage logic (e.g., 1.2 V or 1.8 V ASICs or sensors) while the core runs at 3.3 V-eliminating level shifters in mixed-voltage systems.

Is the 512 KB flash memory organized in dual banks with read-while-write capability?

Yes-the flash is split into two independent banks (Bank 1 and Bank 2), each supporting simultaneous read and write operations. This enables seamless firmware updates via background writes to one bank while executing from the other, with hardware ECC checking and 100 kcycle endurance rated per bank.

STM32U535CCT6Q Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 48-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:: 33

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 10x12/14b SAR; D/A 2x12b

Oscillator Type:: Internal

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32U535CCT6Q FAQ

1.How can I place an order for STM32U535CCT6Q through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32U535CCT6Q 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 STM32U535CCT6Q reliable?

The price and inventory of STM32U535CCT6Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U535CCT6Q is usually 5 days.

3.What payment methods are accepted for STM32U535CCT6Q?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U535CCT6Q transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32U535CCT6Q?

STM32U535CCT6Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32U535CCT6Q 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 STM32U535CCT6Q?

For technical support, including STM32U535CCT6Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U535CCT6Q requirements.

6.How does Aetrix verify that STM32U535CCT6Q is sourced from the original manufacturer or authorized distributors?

All STM32U535CCT6Q 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 STM32U535CCT6Q meets industry standards.

7.What is the process for return or replacement of STM32U535CCT6Q?

All STM32U535CCT6Q units undergo pre-shipment inspection (PSI). If there is an issue with STM32U535CCT6Q, 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 STM32U535CCT6Q part is unused and in its original packaging.

Return procedure for STM32U535CCT6Q:

1.Submit a request within 90 days.

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

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