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STMicroelectronics STM32U5A9J-DK

Name: STM32U5A9J-DK
Brand: STMicroelectronics
SKU: STM32U5A9J-DK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32U5A9J-DK

Manufacturer:: STMicroelectronics

Category:: Embedded MCU, DSP Evaluation Boards

Package:

Datasheet:: STM32U5A9J-DK.pdf

Description:: DISCOVERY KIT WITH STM32U5A9XX M

Quantity:: RFQ Add To RFQ list

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Inventory:3,258

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Product details

Overview

STM32U5A9J-DK from STMicroelectronics is a Discovery kit development platform built around the STM32U5A9NJH6Q ultra-low-power Arm® Cortex®-M33 microcontroller with TrustZone®, featuring 4 Mbytes of flash, 2.5 Mbytes of SRAM, integrated SMPS, and a 2.47" round RGB TFT LCD (480×480) with MIPI DSI® interface and capacitive touch panel. It includes USB Type-C® sink-only connectivity, STLINK-V3E debugger/programmer, Octo-SPI NOR, Hexadeca-SPI PSRAM, 4-Gbyte eMMC, and ST MEMS Time-of-Flight + temperature sensors.

For engineers reviewing the STM32U5A9J-DK datasheet, STM32U5A9J-DK pinout, STM32U5A9J-DK application, or STM32U5A9J-DK equivalent, this board supports rapid prototyping of energy-constrained embedded UIs, secure sensor edge nodes, and graphics-rich IoT endpoints - with verified support for STM32CubeU5 software, IAR EWARM, Keil MDK, and STM32CubeIDE.

Technical Context

The STM32U5A9J-DK implements a complete evaluation system for the STM32U5A9NJH6Q MCU, which integrates Arm TrustZone for hardware-isolated secure execution and a dual-bank 4-Mbyte flash supporting seamless firmware updates. Its power architecture uses an on-board SMPS to operate the MCU at 1.8 V, enabling sub-μA stop modes and dynamic voltage scaling across active/peripheral states.

Graphics capability is delivered via a dedicated MIPI DSI® 2-lane interface driving a round 480×480 RGB TFT with 16.7M-color depth and integrated capacitive touch controller, while peripheral expansion is enabled through two 2.54 mm pitch double-row connectors exposing USART, LPUART, SPI, SAI, I²C, SDMMC, ADC, timers, and GPIOs.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	Arm Cortex-M33 with TrustZone, running up to 160 MHz - enables secure firmware partitioning and real-time deterministic execution.
Memory	4 Mbytes flash + 2.5 Mbytes SRAM - supports large OTA images, dual-bank firmware swapping, and frame-buffered UI rendering.
Display Interface	MIPI DSI® 2-lane - drives 480×480 round TFT at 60 Hz with minimal CPU overhead via DMA-accelerated display engine.
Power Supply	1.8 V VDD only, with on-board SMPS - eliminates external LDO dependency and reduces quiescent current in low-power modes.
Debug Interface	STLINK-V3E with USB re-enumeration (mass storage, VCP, debug) - enables drag-and-drop programming and serial logging without driver installation.
Sensors	VL53L4CD Time-of-Flight + STTS22H temperature sensor - provides gesture detection and ambient thermal compensation without host CPU polling.
External Memory	512-Mbit Octo-SPI NOR + 512-Mbit Hexadeca-SPI PSRAM + 4-Gbyte eMMC - enables fast code XIP, high-bandwidth framebuffer storage, and persistent application data logging.

Availability

STM32U5A9J-DK is available at Aetrix Electronics and suitable for ultra-low-power IoT endpoint development, secure embedded GUI prototyping, and battery-operated sensor hub design requiring stable component supply and long-term toolchain continuity.

Supply support for STM32U5A9J-DK 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, designing and manufacturing microcontrollers, sensors, power ICs, and analog components for industrial, automotive, and consumer applications.

This Discovery kit belongs to ST's STM32U5 ultra-low-power MCU evaluation platform family, engineered to accelerate development of energy-efficient, secure, and graphically capable edge devices - especially where battery life, TrustZone-based security, and responsive UI are critical.

FAQ

What is the target microcontroller on the STM32U5A9J-DK?

The board hosts the STM32U5A9NJH6Q - a TFBGA216-packaged Arm Cortex-M33 MCU with 4 Mbytes flash, 2.5 Mbytes SRAM, TrustZone, SMPS, and full peripheral set including USB Type-C sink, MIPI DSI, and multiple SPI interfaces. It is not interchangeable with the STM32U5G9NJH6Q variant used on the STM32U5G9J-DK1, which has 3 Mbytes SRAM and adds audio MEMS support.

Does the STM32U5A9J-DK support USB Type-C host functionality?

No - the USB Type-C interface on STM32U5A9J-DK is sink-only and does not support host mode, DRP, or power delivery negotiation. It accepts 5 V power from a USB-C source and connects to the onboard STLINK-V3E for programming/debugging; the MCU's USB peripheral is not routed to the connector.

Can the round 480×480 LCD be used without the capacitive touch panel?

Yes - the MIPI DSI interface and display controller operate independently of the touch panel. The capacitive touch controller (STMT01) is connected via I²C and can be disabled in software; display initialization and frame updates proceed normally using the MCU's Chrom-ART accelerator and LTDC peripheral without touch input.

Is the STLINK-V3E debugger on STM32U5A9J-DK field-upgradable?

Yes - the STLINK-V3E firmware is upgradable via USB using ST's STSW-LINK007 utility. It supports mass storage programming, Virtual COM port bridging, and SWD/JTAG debugging, and retains full compatibility with STM32CubeProgrammer, OpenOCD, and all major IDEs without requiring hardware modification.

STM32U5A9J-DK Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STM32U5

Packaging:: Bulk

Product Status:: Discontinued at Digi-Key

Type:: MCU 32-Bit

Core Processor:: ARM® Cortex®-M33

Platform:: Discovery

Utilized IC / Part:: STM32U5A9

Mounting Type:: Fixed

Contents:: Board(s), LCD

STM32U5A9J-DK FAQ

1.How can I place an order for STM32U5A9J-DK through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32U5A9J-DK 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 STM32U5A9J-DK reliable?

The price and inventory of STM32U5A9J-DK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32U5A9J-DK is usually 5 days.

3.What payment methods are accepted for STM32U5A9J-DK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32U5A9J-DK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32U5A9J-DK?

STM32U5A9J-DK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32U5A9J-DK 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 STM32U5A9J-DK?

For technical support, including STM32U5A9J-DK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32U5A9J-DK requirements.

6.How does Aetrix verify that STM32U5A9J-DK is sourced from the original manufacturer or authorized distributors?

All STM32U5A9J-DK 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 STM32U5A9J-DK meets industry standards.

7.What is the process for return or replacement of STM32U5A9J-DK?

All STM32U5A9J-DK units undergo pre-shipment inspection (PSI). If there is an issue with STM32U5A9J-DK, 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 STM32U5A9J-DK part is unused and in its original packaging.

Return procedure for STM32U5A9J-DK:

1.Submit a request within 90 days.

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

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