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SEGGER Evaluation Software for
ST STM32H743ZI-Nucleo

ST - stm32h743 Nucleo

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Converting ST-LINK on-board into a J-Link

SEGGER offers a firmware upgrading the ST-LINK on-board on the Nucleo and Discovery Boards. This firmware makes the ST-LINK on-board compatible to J-Link OB, allowing users to take advantage of most J-Link features like the ultra fast flash download and debugging speed or the free-to-use GDBServer.


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SEGGER SystemView

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Data Sheets

ST STM32H743ZI-Nucleo

  • STM32 microcontroller in LQFP144 package
  • External SMPS to generate Vcore logic supply (only available on '-P' suffixed boards)
  • Ethernet compliant with IEEE-802.3-2002 (depending on STM32 support)
  • USB OTG or full-speed device (depending on STM32 support)
  • 3 user LEDs
  • 2 user and reset push-buttons
  • 32.768 kHz crystal oscillator
  • USB with Micro-AB
  • SWD
  • Ethernet RJ45 (depending on STM32 support)
  • ST Zio connector including Arduino™ Uno V3
  • ST morpho
  • Flexible power-supply options: ST-LINK USB VBUS or external sources


  • 32-bit Arm® Cortex®-M7 core with double-precision FPU and L1 cache
  • 2 Mbytes of Flash memory with read-while-write support
  • 1 Mbyte of RAM
  • Dual mode Quad-SPI memory interface running up to 133 MHz
  • Flexible external memory controller
  • CRC calculation unit
  • Low-power consumption
  • 4 DMA controllers to unload the CPU
  • 4 I2Cs FM+ interfaces (SMBus/PMBus)
  • 4 USARTs
  • 4 UARTs
  • 6 SPIs
  • SWPMI single-wire protocol master I/F
  • MDIO Slave interface
  • 2 SD/SDIO/MMC interfaces (up to 125 MHz)
  • 2 CAN controllers: 2 with CAN FD, 1 with time-triggered CAN (TT-CAN)
  • 2 USB OTG interfaces (1FS, 1HS/FS) crystal-less solution with LPM and BCD
  • Ethernet MAC interface with DMA controller
  • 8- to 14-bit camera interface (up to 80 MHz)
  • LCD-TFT controller up to XGA resolution
  • Chrom-ART graphical hardware Accelerator™ (DMA2D) to reduce CPU load
  • Hardware JPEG Codec
  • Up to 22 timers and watchdogs
  • SWD & JTAG interfaces
  • 4-Kbyte Embedded Trace Buffer