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STMicroelectronics STM32U535VCI6
- Part No.:
- STM32U535VCI6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-UFBGA
- Datasheet:
-
STM32U535VCI6.pdf
- Description:
- IC MCU 32BIT 256KB FLSH 100UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,929
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Product details
Overview
STM32U535VCI6 from STMicroelectronics is an ultra-low-power Arm® Cortex®-M33 microcontroller with TrustZone® security, 240 DMIPS performance, 512 KB flash (ECC), 274 KB SRAM (64 KB with ECC), and integrated SMPS power management. It operates from 1.71 V to 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 sensor nodes requiring secure firmware updates and autonomous analog sensing.
For engineers reviewing the STM32U535VCI6 datasheet, STM32U535VCI6 pinout, STM32U535VCI6 application, or STM32U535VCI6 equivalent, key selection criteria include TrustZone-enabled secure boot, LPBAM-peripheral autonomy in Stop 2, 14-bit 2.5-Msps ADC with hardware oversampling, CAN FD interface, and UFBGA100 (7 × 7 mm) package compatibility with industrial edge controllers.
Technical Context
This MCU implements a dual-cache Arm Cortex-M33 core (ART Accelerator with 8-KB instruction cache and 4-KB data cache), enabling zero-wait-state execution at up to 160 MHz. Its FlexPowerControl architecture supports nine low-power modes - including 90 nA Shutdown and 370 nA Standby with RTC - managed via embedded LDO/SMPS regulators with dynamic voltage scaling.
Security is enforced through hardware-rooted TrustZone®, securable peripherals, RDP-based debug protection, and Secure Firmware Installation (SFI) using embedded Root-Secure Services (RSS). Peripheral autonomy is extended by Low-Power Background-Autonomous Mode (LPBAM), allowing DMA-driven peripheral chains (e.g., ADC → DMA → AES) without CPU wake-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M33 with TrustZone®, FPU, MPU, DSP extensions - enables secure real-time control and cryptographic acceleration |
| Max Clock / Performance | 160 MHz / 240 DMIPS - supports deterministic motor control loops and audio processing at sub-10 µs latency |
| Memory | 512 KB flash (ECC, 2-bank RWW), 274 KB SRAM (64 KB ECC-enabled) - ensures robust code integrity and data retention in harsh environments |
| Low-Power Modes | 90 nA Shutdown, 370 nA Standby+RTC, 3.0 µA Stop 2 (16 KB SRAM) - extends coin-cell battery life to >10 years in metering applications |
| Analog Peripherals | 14-bit 2.5-Msps ADC (hardware oversampling), 2×12-bit DAC, OPAMP with PGA, ultra-low-power comparator - enables high-fidelity sensor signal conditioning without external components |
| Connectivity | CAN FD controller, USB FS host/device, 5×USART/LPUART, 4×I²C FM+, SAI, SDMMC - supports mixed wired/wireless edge gateway architectures |
| Security Features | TrustZone®, 96-bit unique ID, 512-byte OTP, HASH accelerator, NIST SP800-90B TRNG, secure hide protection area (HDP) - meets PSA Level 3 and SESIP certification prerequisites |
Pinout & Package
STM32U535VCI6 uses a 100-pin UFBGA package (7 × 7 mm, 0.8 mm pitch) with 82 fast I/Os - most 5V-tolerant, up to 14 with independent 1.08–3.6 V supply. The package supports full peripheral mapping including OCTOSPI, DCMI, PSSI, and dual CAN FD interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Core, analog, and I/O power supplies | Independent domains enable precise analog measurement while digital logic operates at lower voltage for power optimization |
| VBAT | Backup domain supply | Powers RTC, 32×32-bit backup registers, and 2-KB backup SRAM during main power loss |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external reset supervisors and brown-out detection circuits |
| PA13/PA14 | SWDIO/SWCLK debug interface | Serial-wire debug pins supporting JTAG/SWD protocols - essential for secure firmware development and field debugging |
| PD0/PD1 | OSC_IN/OSC_OUT (HSE) | 4–50 MHz crystal oscillator inputs - used for high-accuracy system clock and USB timing reference |
| PC13/PC14/PC15 | LSE_IN/LSE_OUT/RTC_REFIN | 32.768 kHz RTC crystal interface with calibration support - enables ±1 ppm timekeeping accuracy over temperature |
| PF14/PF15 | FDCAN1_RX/FDCAN1_TX | Dedicated CAN FD transceiver interface - supports 5 Mbps data phase and ISO 11898-1 compliant bus arbitration |
| PE2–PE7 | OCTOSPI1_IO0–IO5 | Octo-SPI memory interface with single/dual/octal I/O modes - enables direct XIP execution from external flash up to 133 MHz |
Key Features
| Feature | Design Value |
|---|---|
| LPBAM (Low-Power Background-Autonomous Mode) | Enables DMA-driven peripheral chains (e.g., ADC → AES → SRAM) in Stop 2 mode - eliminates CPU wake-ups for sensor data preprocessing |
| CORDIC + FMAC co-processors | Hardware-accelerated trigonometric and filter math - reduces FFT computation time by >8× vs. software-only on Cortex-M33 |
| Secure Firmware Upgrade (TF-M) | ARM Trusted Firmware-M integration with SFI and RSS - enables signed, encrypted OTA updates with rollback protection |
| Flexible Life Cycle Management | RDP levels (0/1/2) + password-protected debug access - allows phased security deployment from dev to production |
| Multi-Voltage I/O Banks | 14 I/Os support independent 1.08–3.6 V supply - simplifies interfacing with legacy 1.8 V sensors and 3.3 V communication ICs |
Applications
| Smart Utility Metering | Industrial Predictive Maintenance Sensor |
|---|---|
Use Scenario: Battery-powered gas/water meters with ultrasonic flow sensing and LoRaWAN backhaul. IC Role / Device Role / Timing Role: Main controller executing secure metering algorithms, managing LPBAM-triggered ADC sampling, and handling TLS-secured OTA updates via LPUART. Use Value: 370 nA Standby+RTC extends 10-year battery life; TrustZone isolates metrology firmware from connectivity stack. | Use Scenario: Vibration and temperature monitoring node mounted on rotating machinery with edge FFT analysis. IC Role / Device Role / Timing Role: Real-time sensor hub performing CORDIC-accelerated FFT on 14-bit ADC data, storing results in ECC SRAM, and transmitting alerts via CAN FD. Use Value: 2.2 µA Stop 3 with full SRAM preserves context during intermittent wake cycles; FMAC reduces FFT latency to <50 µs. |
| Secure Medical Wearable | Automotive Body Control Module (BCM) |
Use Scenario: ECG patch with dry-electrode sensing, Bluetooth LE telemetry, and tamper-detect housing. IC Role / Device Role / Timing Role: Secure health-data processor running PSA-certified TF-M, using OPAMP+PGA for biopotential amplification and TRNG for session key generation. Use Value: Active tampers detect enclosure breach and trigger HDP erase; 1.4 µA Stop 3 preserves 16-KB SRAM for last-reading buffer. | Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with LIN/UART diagnostics. IC Role / Device Role / Timing Role: Low-voltage BCM MCU interfacing 12 V loads via GPIO-controlled pre-drivers, managing CAN FD diagnostics, and monitoring VBAT for sleep/wake transitions. Use Value: 5V-tolerant I/Os eliminate level shifters; VBAT mode maintains RTC and alarm state during ignition-off periods. |
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), dual-core (Cortex-M33 + Cortex-M0+), no SMPS, 125 °C rating | Targeted at automotive under-hood applications requiring extended temperature range and asymmetric multiprocessing | Select when needing >512 KB flash or dual-core partitioning; not drop-in due to different power architecture and thermal specs |
| NXP KW38Z128VHT4 | ARM Cortex-M0+, 128 KB flash, BLE 5.0 radio integrated, no TrustZone, 1.2 µA Stop mode | Optimized for Bluetooth mesh sensor endpoints with minimal external BOM | Choose only for BLE-centric designs where radio integration outweighs need for TrustZone, CAN FD, or high-resolution ADC |
Compared with STM32U535VCI6, STM32U575VIT6 offers greater memory and dual-core flexibility but lacks SMPS efficiency and requires higher thermal margin; KW38Z128VHT4 provides integrated BLE but sacrifices security depth, analog capability, and peripheral richness needed for industrial gateways.
Availability
STM32U535VCI6 is available at Aetrix Electronics and suitable for smart utility metering, industrial predictive maintenance sensors, secure medical wearables, and automotive body control modules requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32U535VCI6 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, and automotive-grade ICs with strong focus on energy efficiency and functional safety.
The STM32U5 series targets ultra-low-power, high-security embedded applications - designed specifically for battery-operated IoT endpoints, industrial edge nodes, and medical devices demanding PSA Level 3 compliance and 10+ year field reliability.
FAQ
What is the maximum operating frequency and associated DMIPS rating of the STM32U535VCI6?
The STM32U535VCI6 achieves a maximum CPU frequency of 160 MHz, delivering 240 DMIPS (Dhrystone 2.1) performance. This is enabled by the ART Accelerator's 8-KB instruction cache, which ensures zero-wait-state execution from flash memory. The core also includes a floating-point unit (FPU) and DSP extensions for real-time signal processing tasks.
Does the STM32U535VCI6 support hardware-accelerated cryptography and secure boot?
Yes - it integrates TrustZone® for hardware-enforced isolation between secure and non-secure worlds, a HASH accelerator for SHA-256/MD5, a NIST SP800-90B-compliant TRNG, and Secure Firmware Installation (SFI) via embedded Root-Secure Services (RSS). Secure boot begins at reset with immutable root-of-trust, verified against public keys stored in OTP.
How does the LPBAM feature reduce power consumption in sensor applications?
LPBAM enables autonomous peripheral operation in Stop 2 mode - for example, triggering ADC conversions, transferring samples via DMA to SRAM, and activating AES encryption - all without waking the CPU. This reduces active current draw by eliminating polling/interrupt overhead, achieving sustained sub-µA average power in duty-cycled sensing systems.
Which package variant and pin count does the STM32U535VCI6 use, and what are its key mechanical attributes?
The STM32U535VCI6 uses a 100-ball UFBGA package (7 × 7 mm, 0.8 mm pitch, A0C2 footprint). It features 82 user I/Os - most 5V-tolerant - with dedicated power domains (VDDIO2) for flexible multi-voltage interfacing. Thermal resistance (θJA) is 30 °C/W, supporting operation up to +85 °C ambient without forced airflow.
STM32U535VCI6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-UFBGA
- 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:
STM32U535VCI6 FAQ
1.How can I place an order for STM32U535VCI6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32U535VCI6 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 STM32U535VCI6 reliable?
The price and inventory of STM32U535VCI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U535VCI6 is usually 5 days.
3.What payment methods are accepted for STM32U535VCI6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U535VCI6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32U535VCI6?
STM32U535VCI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32U535VCI6 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 STM32U535VCI6?
For technical support, including STM32U535VCI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U535VCI6 requirements.
6.How does Aetrix verify that STM32U535VCI6 is sourced from the original manufacturer or authorized distributors?
All STM32U535VCI6 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 STM32U535VCI6 meets industry standards.
7.What is the process for return or replacement of STM32U535VCI6?
All STM32U535VCI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32U535VCI6, 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 STM32U535VCI6 part is unused and in its original packaging.
Return procedure for STM32U535VCI6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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