The STM32F746G-DISCO discovery board (32F746GDISCOVERY) is a complete demonstration and development platform for STMicroelectronics ARM® Cortex®-M7 core-based STM32F746NGH6 microcontroller.


The STM32F746G-DISCO discovery board (32F746GDISCOVERY) is a complete demonstration and development platform for STMicroelectronics ARM® Cortex®-M7 core-based STM32F746NGH6 microcontroller.

Microcontroller features

  • STM32F746NGH6 in TFBGA216 package
  • ARM®32-bit Cortex®-M7 + FPU + Chrom-ART Accelerator
  • 216 MHz max CPU frequency
  • VDD from 1.7 V to 3.6 V
  • 1024 KB Flash
  • 320 KB SRAM
  • GPIOs (168) with external interrupt capability
  • 12-bit ADCs with 24 channels (3)
  • 12-bit DAC channels (2)
  • USART/UART (8)
  • I2C (4)
  • SPI (6)
  • Advanced-control Timer (2)
  • Low-power Timer (1)
  • General Purpose Timers (12)
  • Watchdog Timers (2)
  • CAN 2.0B active (2)
  • SAI (2)
  • USB 2.0 OTG HS
  • USB 2.0 OTG FS
  • Ethernet
  • Camera interface
  • Random Generator (TRNG for HW entropy)

Board features

This discovery board offers everything required for users to get started quickly and develop applications easily. The full range of hardware features on the board helps to evaluate almost all peripherals and develop your own applications.

  • Ethernet 10/100Mb
  • MicroSD card
  • SAI audio DAC stereo with audio jack input and output
  • MEMS digital microphones
  • Quad-SPI Flash memory
  • 4.3-inch color LCD-TFT with a capacitive multi-touch panel
  • SPDIF RCA input
  • 1 user LED
  • 1 user button
  • Arduino Uno V3 connectors make it possible to easily connect extension shields or a daughterboard for your specific application.
  • The integrated ST-LINK/V2-1 provides an embedded in-circuit debugger and programmer for the STM32 MCU.

Board pinout

Pins Legend


You can find more details on the available pins and labels in the PeripheralPins.c and PinNames.h files.

These files can be found in:

  • ARMmbed/mbed-os repository on GitHub (up-to-date version, used with mbed CLI commands)


  • mbed-dev library in developer.mbed.org (source files of the mbed library used on mbed compiler IDE)



Supported shields

ST X-NUCLEO boards

See Matrix of tested boards.

Other Non-ST boards

See here

Getting started

Nucleo ST-LINK/V2-1 driver installation and firmware upgrade

  • Install the ST-LINK/V2-1 driver before connecting the Nucleo board to your PC the first time. Follow this LINK for all details.
  • For optimum performances, ensure that the Nucleo ST-LINK/V2-1 firmware is upgraded to the latest version. Follow this LINK for all details.

Technical references

For more information, please refer to:

Known limitations

The following section describes known limitations of the platform. Note that general issues are tracked into the mbed repository available on GitHub.

This platform does not present any limitation.

Tips and Tricks

Find more information in ST WIKI pages.

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Discussion topics

TopicRepliesLast post
Use SDRAM for heap memory 0 19 Dec 2018 by sabme ua
DISCO_F746NG Block Device driver to combine with MBED-OS File system (for example with FAT file system) 2 09 Nov 2018 by Agner Manuel
Analog inputs giving weird readings 0 19 Oct 2017 by Alex Shenfield
LCD library doesn't associate with Ethernet or MQTT library 1 06 Oct 2017 by MARCUS NEVES CUNHA
Communication TCP 0 26 Sep 2017 by MARCUS NEVES CUNHA
FYI: Few examples currently functional on disco-f746ng 5 23 Jul 2017 by Sajjad Alavi
DISCO-F746NG_AUDIO_demo problable bug 0 04 Jun 2017 by francois samouth
Possible error in AUDIO_DISCO_F746NG 0 20 Apr 2017 by Kamil Raczkowski
AUDIO_DISCO_F746NG has a broken function. 0 20 Apr 2017 by Kamil Raczkowski
Data Empty in I2C Communication 0 27 Dec 2016 by Kento Watanabe
Broken LCD templates 4 05 Dec 2016 by Armelle DubocST
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