Evaluation board with STM32L4R9AI MCU

The STM32L4R9I-EVAL evaluation board is designed as a complete demonstration and development platform for STMicroelectronics’ Arm® Cortex®-M4 core-based STM32L4R9AI microcontroller with: four I²C buses, three SPI and six USART ports, CAN port, two SAI ports, 12-bit ADC, 12-bit DAC, internal 640-Kbyte SRAM and 2-Mbyte Flash memory, two Octo-SPI memory interfaces, touch-sensing capability, USB OTG FS port,LCD-TFT controller, MIPI DSI host controller, flexible memory controller (FMC), 8- to 14-bit camera interface, and JTAG debugging support.

The full range of on-board hardware features helps the user to evaluate all the peripherals (USB, USART, digital microphones, ADC and DAC, TFT LCD, MIPI DSI LCD, LDR, SRAM, NOR Flash memory device, Octo-SPI Flash memory device, microSD card, sigma-delta modulators, CAN transceiver, EEPROM) and to develop applications. Extension headers allow easy connection of a daughterboard or wrapping board for a specific application.

An ST-LINK/V2-1 is integrated on the board, as an embedded in-circuit debugger and programmer for the STM32 MCU and the USB virtual COM port bridge.

Key Features

  • STM32L4R9AII6 microcontroller with 2-Mbytes of Flash memory and 640-Kbytes of RAM in a UFBGA169 package
  • 1.2” 390x390 pixel MIPI® DSI round LCD
  • 4.3” 480x272 pixel TFT LCD with RGB mode
  • Two ST-MEMS digital microphones
  • 8-Gbyte microSD™ card bundled
  • 16-Mbit (1 M x16 bit) SRAM device
  • 128-Mbit (8 M x16 bit) NOR Flash memory
  • 512-Mbit Octo-SPI Flash memory with double transfer rate (DTR) support
  • 64-Mbit Octo-SPI SRAM memory with HyperBus interface support
  • EEPROM supporting 1 MHz I²C-bus communication speed
  • Reset and wakeup / tamper buttons
  • Joystick with four-way controller and selector
  • Touch-sensing button
  • Light-dependent resistor (LDR)
  • Potentiometer
  • Coin battery cell for power backup
  • Board connectors:
    • Two jack outputs for stereo audio headphone with independent content
    • Slot for microSD card supporting SD and SDHC
    • TFT LCD standard connector
    • MIPI DSI LCD standard connector
    • EXT_I2C connector supports I²C bus
    • RS-232 port configurable for communication or MCU flashing
    • USB OTG FS Micro-AB port
    • CAN 2.0A/B-compliant port
    • Connector for ADC input and DAC output
    • JTAG/SWD connector
    • ETM trace debug connector
    • User interface through USB virtual COM port
    • Embedded ST-LINK/V2-1 debug and flashing facility TAG connector
    • STDC14 connector
    • PMOD connector
  • Board expansion connectors:
    • motor-control module connector
    • extension connector for daughterboard
  • Flexible power-supply options: power jack, ST-LINK/V2-1 USB connector, USB OTG FS connector, daughterboard
  • On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, virtual COM port and debug port
  • Microcontroller supply voltage: fixed 3.3 V or adjustable range from 1.71 V to 3.6 V
  • MCU current consumption measurement circuit
  • Access to comparator and operational amplifier of STM32L4R9AII6
  • Comprehensive free software libraries and examples available with the STM32Cube package
  • Support of a wide choice of integrated development environments (IDEs) including IAR™, Keil® and GCC-based IDEs




Technical Documentation

Product Specifications
Description Version Size
DB3310 DB3310: Evaluation board with STM32L4R9AI MCU 1.0 238 KB
Technical Notes & Articles
Description Version Size
TN1235 TN1235: Overview of the ST-LINK embedded in STM32 MCU Nucleo, Discovery Kits and Eval Boards 1.0 155 KB
User Manuals
Description Version Size
UM2248 UM2248: Evaluation board with STM32L4R9AI MCU 3.0 3 MB

Presentations & Training Material

Description Version Size
STM32 Development Boards Portfolio 1.0 3 MB
STM32L4+ MCU series - Excellence in ultra-low-power with more performance 1.0 1 MB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
STM32L4R9I-EVAL gerber files 1.0 7 MB
Bill of Materials
Description Version Size
STM32L4R9I-EVAL BOM 1.0 114 KB
Schematic Pack
Description Version Size
STM32L4R9I-EVAL Schematics 1.0 2 MB

Publications and Collaterals

Description Version Size
STM32 for makers - Releasing your creativity 18.01 1 MB
STM32L4+ Series - Ultra-low-power and more performance 17.10 489 KB
Description Version Size
STM32 32-bit MCU family - Leading supplier of Arm® Cortex®-M microcontrollers 18.02 2 MB


License Agreement
Description Version Size
Evaluation products license agreement 1.4 128 KB
Open Reference Material License Agreement v5 42 KB

Tools and Software

Development Tools
Software Development Tools
Embedded Software
MCUs Embedded Software

Sample & Buy

Part Number Marketing Status Unit Price (US$) * Quantity Specific features ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STM32L4R9I-EVAL Active 301.08 1 - NEC 3A991A2 - MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status RoHS Compliance Grade Material Declaration**
STM32L4R9I-EVAL ActiveEcopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.