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

STMicroelectronics STM32U585CIT6Q

Name: STM32U585CIT6Q
Brand: STMicroelectronics
SKU: STM32U585CIT6Q
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32U585CIT6Q

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 48-LQFP

Datasheet:: STM32U585CIT6Q.pdf

Description:: IC MCU 32BIT 2MB FLASH 48LQFP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STM32U585CIT6Q 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 +125 °C and delivers 4.3 µA Stop 3 mode with full SRAM retention-ideal for battery-powered industrial sensors and secure IoT edge nodes.

For engineers reviewing the STM32U585CIT6Q datasheet, STM32U585CIT6Q pinout, STM32U585CIT6Q application, or STM32U585CIT6Q equivalent, key selection criteria include TrustZone-enabled secure boot, LPBAM autonomous peripheral operation in Stop 2, dual Octo-SPI interfaces for encrypted external memory, and 14-bit/12-bit ADCs with hardware oversampling for precision sensing.

Technical Context

The device implements Arm TrustZone for system-wide hardware isolation between secure and non-secure firmware domains, enforced by GTZC controllers for memories, peripherals, and I/Os. Its FlexPowerControl architecture enables low-power background autonomous mode (LPBAM) using DMA-driven peripheral chains functional down to Stop 2 mode.

Core timing relies on three PLLs (system, USB, audio/ADC), dual oscillators (4–50 MHz HSE + 32 kHz LSE), and clock recovery (CRS) with ±0.25% accuracy. Security includes SESIP3/PSA Level 3 certification, secure firmware installation (SFI), on-the-fly Octo-SPI decryption (OTFDEC), and tamper detection with backup register protection.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M33 with TrustZone, FPU, MPU, DSP extensions - enables secure real-time control with deterministic floating-point math.
Max Clock / Performance	160 MHz / 240 DMIPS - supports high-throughput sensor fusion and protocol stacks without external co-processors.
Memory	2 MB Flash (ECC, read-while-write, 100 kcycles endurance) + 786 KB SRAM (ECC configurable) - ensures data integrity and long-term reliability in harsh environments.
Low-Power Modes	160 nA Shutdown, 530 nA Standby with RTC, 4.3 µA Stop 3 with full SRAM - extends battery life to years in metering and wearable applications.
Security	SESIP3 & PSA Level 3 certified; embedded root secure services (RSS); hardware unique key (HUK); active tamper detection - meets IEC 62443-3-3 and NIST SP800-193 requirements.
Analog Peripherals	14-bit ADC @ 2.5 Msps (hardware oversampling), 12-bit ADC autonomous in Stop 2, 2× DAC, 2× OPAMP, 2× comparator - enables high-fidelity signal acquisition without CPU wake-up.
Connectivity	1× CAN FD, 6× USART (with LIN/IrDA), 4× I²C FM+, 2× SAI, 1× USB OTG FS, 1× UCPD Type-C/PD controller - supports mixed wired/wireless industrial gateways.

Pinout & Package

STM32U585CIT6Q is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), optimized for space-constrained portable and industrial designs. The package supports reflow soldering and provides thermal pad for enhanced power dissipation.

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA, VDDIO2	Main, analog, and I/O supply rails	Independent 1.71–3.6 V domains enable mixed-signal integrity and flexible power sequencing.
VSS, VSSA, VSSIO2	Ground references	Dedicated analog/digital grounds reduce coupling noise in precision ADC/DAC operation.
PA0–PA15, PB0–PB15, etc.	General-purpose I/Os	Up to 136 fast I/Os with interrupt capability; most 5V-tolerant; up to 14 support independent 1.08–3.6 V supply for interfacing legacy logic.
BOOT0	Boot mode selection	Configures boot source (system memory, main flash, or SRAM) at reset - critical for secure field firmware updates.
NRST	Reset input	Active-low asynchronous reset with internal pull-up; supports external watchdog or power-on reset coordination.
OSC_IN / OSC_OUT	HSE crystal interface	Supports 4–50 MHz external crystal for precise timing in communication and measurement subsystems.
LSE_IN / LSE_OUT	RTC crystal interface	32.768 kHz crystal connection enabling calendar-accurate timekeeping and ultra-low-power wake-up events.

Key Features

Feature	Design Value
TrustZone-enforced secure boot	Root of trust established via unique boot entry and secure hide protection area (HDP), preventing unauthorized firmware execution.
LPBAM autonomous peripherals	Peripherals (ADC, timers, UART) operate via DMA in Stop 2 mode without CPU intervention - reduces active time and energy per measurement cycle.
On-the-fly external memory decryption	OTFDEC engine decrypts Octo-SPI NOR/FRAM content in real time using AES-128/256 - enables secure code/data storage outside internal Flash.
Hardware crypto acceleration	Dual AES coprocessors (one DPA-resistant), PKA for ECC/RSA, HASH, and NIST SP800-90B-compliant TRNG - accelerates TLS handshake and secure OTA updates.
Flexible power architecture	Integrated SMPS + LDO with dynamic voltage scaling and switch-on-the-fly - improves efficiency across 1.8 V to 3.3 V operating points.

Applications

Smart Utility Meter

Secure Industrial Gateway

Use Scenario: Battery-powered electricity/water meter with 10-year lifespan, remote firmware updates, and tamper detection.

IC Role / Device Role / Timing Role: Main MCU executing metrology algorithms, managing secure OTA via UCPD/USB, and maintaining RTC calendar during VBAT-only operation.

Use Value: 530 nA Standby with RTC + 160 nA Shutdown ensures >10-year battery life; TrustZone isolates metrology firmware from update stack.

Use Scenario: Edge gateway aggregating Modbus, CAN FD, and BLE sensor data before forwarding to cloud via TLS-secured Ethernet/Wi-Fi.

IC Role / Device Role / Timing Role: Secure host controller running TF-M, performing TLS 1.3 handshakes with hardware-accelerated crypto, and managing multi-protocol scheduling via LPDMA.

Use Value: Dual AES + PKA + HASH accelerators cut TLS negotiation time by >70%; LPBAM offloads UART/CAN polling to save CPU cycles.

Wearable Health Monitor

Asset Tracking Module

Use Scenario: Compact wearable measuring ECG, SpO₂, and motion via analog front-end and capacitive touch interface.

IC Role / Device Role / Timing Role: Sensor hub with 14-bit ADC oversampling, Chrom-ART DMA2D for local display rendering, and TSC for button-free UI.

Use Value: 14-bit ADC @ 2.5 Msps with hardware averaging achieves <1 LSB INL; 4.3 µA Stop 3 preserves context during sleep between measurements.

Use Scenario: GPS-enabled tracker logging location, temperature, and shock events in logistics containers with multi-year battery life.

IC Role / Device Role / Timing Role: Low-power coordinator managing GPS UART, accelerometer I²C, and cellular modem SPI while maintaining secure firmware state.

Use Value: 19.5 µA/MHz Run mode + 8.95 µA Stop 2 with full SRAM enables aggressive duty cycling; 96-bit UID enables cryptographic device identity binding.

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
STM32L562VEJ6	Same Cortex-M33 core, TrustZone, and 2 MB Flash but lacks UCPD, CAN FD, and OTFDEC; lower analog integration (no 14-bit ADC).	Suitable for cost-sensitive secure MCU applications without Type-C PD or encrypted external memory needs.	Select when UCPD, CAN FD, or on-the-fly external memory decryption are not required - offers lower BOM cost and smaller footprint.
RA6M5GFP	Arm Cortex-M33 with TrustZone, 1 MB Flash, 512 KB SRAM, but no OTFDEC, no UCPD, and only 12-bit ADC; uses Renesas' Secure Crypto Engine instead of PSA Level 3 certification.	Better suited for Japanese automotive/industrial customers requiring Renesas ecosystem and functional safety (ASIL-B ready).	Choose for ASIL-B compliance path or existing Renesas toolchain adoption; avoid if PSA Level 3 certification or Octo-SPI encryption is mandatory.

Compared with STM32L562VEJ6 and RA6M5GFP, STM32U585CIT6Q uniquely combines PSA Level 3 certification, on-the-fly Octo-SPI decryption, UCPD Type-C/PD control, and 14-bit ADC - making it the only option for secure, battery-powered gateways requiring encrypted external code storage and high-precision analog sensing.

Availability

STM32U585CIT6Q is available at Aetrix Electronics and suitable for smart utility meters, secure industrial gateways, wearable health monitors, and asset tracking modules requiring stable component supply across extended product lifecycles.

Supply support for STM32U585CIT6Q 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 management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32U5 series targets ultra-low-power, high-security embedded applications - delivering best-in-class energy efficiency (ULPMark™-CP 450) and robust hardware-based security (PSA Level 3, SESIP3) for next-generation IoT endpoints.

FAQ

What is the maximum operating temperature for STM32U585CIT6Q?

The STM32U585CIT6Q is rated for operation from –40 °C to +125 °C ambient temperature, validated per industrial-grade specifications. This extended range supports deployment in under-hood automotive modules, outdoor utility meters, and factory-floor controllers without derating.

Does STM32U585CIT6Q support secure firmware updates over-the-air?

Yes - it supports secure OTA updates via TF-M (Trusted Firmware-M), leveraging embedded root secure services (RSS), hardware unique key (HUK), and verified boot chain. The UCPD controller enables authenticated firmware delivery over USB Type-C, while OTFDEC ensures encrypted external storage remains protected during update staging.

How many I/O pins support independent VDDIO2 supply?

Up to 14 I/O pins (grouped as GPIO ports with dedicated VDDIO2 rail) support independent 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 - critical for mixed-voltage system design.

Is the 14-bit ADC usable in low-power modes?

No - the 14-bit ADC (ADC1) requires Run or Sleep mode. However, the 12-bit ADC (ADC4) operates autonomously in Stop 2 mode with hardware oversampling, delivering up to 16-bit effective resolution while consuming only 1.9 µA - ideal for periodic sensor sampling without waking the CPU.

STM32U585CIT6Q Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 48-LQFP

Series:: STM32U5

Packaging:: Bulk

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, USB OTG

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

Number of I/O:: 33

Program Memory Size:: 2MB (2M x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 784K x 8

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

Data Converters:: A/D 10x12/14b SAR; D/A 2x12b

Oscillator Type:: External, Internal

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32U585CIT6Q FAQ

1.How can I place an order for STM32U585CIT6Q through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32U585CIT6Q 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 STM32U585CIT6Q reliable?

The price and inventory of STM32U585CIT6Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U585CIT6Q is usually 5 days.

3.What payment methods are accepted for STM32U585CIT6Q?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U585CIT6Q transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32U585CIT6Q?

STM32U585CIT6Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32U585CIT6Q 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 STM32U585CIT6Q?

For technical support, including STM32U585CIT6Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U585CIT6Q requirements.

6.How does Aetrix verify that STM32U585CIT6Q is sourced from the original manufacturer or authorized distributors?

All STM32U585CIT6Q 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 STM32U585CIT6Q meets industry standards.

7.What is the process for return or replacement of STM32U585CIT6Q?

All STM32U585CIT6Q units undergo pre-shipment inspection (PSI). If there is an issue with STM32U585CIT6Q, 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 STM32U585CIT6Q part is unused and in its original packaging.

Return procedure for STM32U585CIT6Q:

1.Submit a request within 90 days.

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

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