B-U585I-IOT02A - Discovery Kit for IoT Node with STM32U585AI MCU

The B-U585I-IOT02A is STMicroelectronics' flagship evaluation board for the STM32U5 ultra-low-power microcontroller series, built around the STM32U585AII6Q - an ARM Cortex-M33 core MCU with ARM TrustZone hardware security, 2MB of Flash memory, 786KB of SRAM, and an integrated SMPS in a UFBGA169 package. The STM32U5 series targets connected IoT and battery-powered embedded applications where security, ultra-low standby current, and wireless connectivity must coexist with sufficient processing headroom for real-time sensor fusion, edge inference, and encrypted data handling. The ARM TrustZone implementation on the Cortex-M33 core provides hardware-enforced isolation between trusted and non-trusted execution environments on a single MCU, enabling secure boot, secure key storage, and peripheral access control without a dedicated secure element in cost-sensitive and space-constrained IoT designs.

Wireless connectivity is covered by a dual-stack implementation combining an MXCHIP 802.11 b/g/n Wi-Fi module for network-layer IoT cloud connectivity alongside STMicroelectronics Bluetooth Low Energy for short-range peripheral and sensor communication, allowing the evaluation board to operate as both a Wi-Fi-connected IoT node and a BLE peripheral or central without additional wireless hardware. The onboard MEMS sensor suite from STMicroelectronics is exceptionally comprehensive for an evaluation board in this class, covering 2 digital microphones, a relative humidity and temperature sensor, a 3-axis magnetometer, a combined 3D accelerometer and 3D gyroscope, a 260-1260 hPa absolute digital barometric pressure sensor, a time-of-flight and gesture-detection sensor, and an ambient-light sensor, providing a complete multi-modal sensing platform for algorithm development, sensor fusion evaluation, and edge AI inference benchmarking without external sensor modules. External memory resources include 512Mbit Quad-SPI Flash, 64Mbit Octo-SPI PSRAM, and 256Kbit I2C EEPROM, supplying ample storage and execution memory for complex firmware stacks, ML model weights, and data logging buffers. The onboard STLINK-V3E debugger and programmer supports USB re-enumeration across mass storage, Virtual COM port, and debug port modes, and the board is supported by the complete STM32CubeU5 software package with comprehensive libraries, middleware, and examples for IAR Embedded Workbench, MDK-ARM, and STM32CubeIDE.

• Microcontroller: STM32U585AII6Q, ARM Cortex-M33 core with ARM TrustZone, 2MB Flash, 786KB SRAM, integrated SMPS, UFBGA169 package
• Ultra-Low-Power Design: STM32U5 series ultra-low-power architecture for battery-powered and energy-harvesting IoT node evaluation
• Hardware Security: ARM TrustZone on Cortex-M33 for hardware-enforced trusted and non-trusted execution environment isolation, secure boot, and peripheral access control
• Wi-Fi Connectivity: MXCHIP 802.11 b/g/n compliant Wi-Fi module for network-layer IoT cloud connectivity
• Bluetooth Low Energy: STMicroelectronics BLE for short-range peripheral and sensor communication alongside Wi-Fi
• External Memory: 512Mbit Quad-SPI Flash, 64Mbit Octo-SPI PSRAM, and 256Kbit I2C EEPROM for firmware, ML model, and data logging storage
• Digital Microphones: 2 onboard MEMS digital microphones for audio capture, voice command, and acoustic sensing evaluation
• Humidity and Temperature Sensor: STMicroelectronics relative humidity and temperature MEMS sensor
• 3-Axis Magnetometer: STMicroelectronics 3-axis MEMS magnetometer for compass and magnetic field sensing
• 3D Accelerometer and 3D Gyroscope: Combined STMicroelectronics 6-axis IMU for motion, orientation, and gesture sensing
• Barometric Pressure Sensor: 260-1260 hPa absolute digital output barometer for altitude and environmental pressure measurement
• Time-of-Flight and Gesture Sensor: STMicroelectronics ToF and gesture-detection sensor for proximity and contactless input evaluation
• Ambient-Light Sensor: Onboard ambient-light sensing for display brightness control and light-level monitoring evaluation
• USB Interface: USB Type-C connector with USB Full Speed, sink and source power, and 2.5W power capability
• ARDUINO Uno V3 Expansion: Standard ARDUINO Uno V3 expansion connectors for shield and peripheral module integration
• Additional Expansion: Camera module connector, 2x STMod+ connectors, and Pmod connector for broad peripheral and module expansion
• Onboard Debugger: STLINK-V3E with USB re-enumeration across mass storage, Virtual COM port, and debug port modes
• Flexible Power Supply: ST-LINK USB VBUS, USB connector, or external source power input options
• IDE Support: IAR Embedded Workbench, MDK-ARM, and STM32CubeIDE with full STM32CubeU5 MCU package support

• STM32U5 ultra-low-power IoT node firmware development and evaluation requiring Wi-Fi and BLE dual-stack wireless connectivity
• ARM TrustZone hardware security implementation evaluation for secure boot, key storage, and trusted execution environment partitioning on Cortex-M33
• Multi-modal MEMS sensor fusion algorithm development and edge AI inference benchmarking across accelerometer, gyroscope, magnetometer, microphone, and environmental sensors
• Battery-powered IoT device prototyping requiring ultra-low standby current with integrated SMPS and comprehensive onboard sensor suite
• AWS IoT, Azure IoT Hub, and cloud connectivity evaluation using onboard Wi-Fi and STM32CubeU5 cloud middleware libraries
• STM32CubeIDE, IAR Embedded Workbench, and MDK-ARM firmware development and debugging with STLINK-V3E onboard programmer