STM32H7S78-DK Discovery

Board Overview

STM32H7S78-DK Discovery

Name:

stm32h7s78_dk

Vendor:

STMicroelectronics

Architecture:

arm

SoC:

stm32h7s7xx

Browse board sources

Overview

The STM32H7S78-DK Discovery kit is designed as a complete demonstration and development platform for STMicroelectronics Arm® Cortex®-M7 core-based STM32H7S7L8H6H microcontroller with TrustZone®. Here are some highlights of the STM32H7S78-DK Discovery board:

• STM32H7S7L8H6H microcontroller featuring 64Kbytes of Flash memory and 620 Kbytes of SRAM in 225-pin TFBGA package

• USB Type-C™ Host and device with USB power-delivery controller

• SAI Audio DAC stereo with one audio jacks for input/output,

• ST MEMS digital microphone with PDM interface

• Octo-SPI interface connected to 512Mbit Octo-SPI NORFlash memory device (MX66UW1G45GXD100 from MACRONIX)

• 10/100-Mbit Ethernet,

• Board connectors

  • STMod+ expansion connector with fan-out expansion board for Wi‑Fi®, Grove and mikroBUS™ compatible connectors

  • Pmod™ expansion connector

  • Audio MEMS daughterboard expansion connector

  • ARDUINO® Uno V3 expansion connector

• Flexible power-supply options

  • ST-LINK

  • USB VBUS

  • external sources

• On-board STLINK-V3E debugger/programmer with USB re-enumeration capability:

  • mass storage

  • Virtual COM port

  • debug port

• 4 user LEDs

• User and reset push-buttons

More information about the board can be found at the STM32H7S78-DK Discovery website.

Hardware

The STM32H7S7xx devices are a high-performance microcontrollers family (STM32H7 Series) based on the high-performance Arm® Cortex®-M7 32-bit RISC core. They operate at a frequency of up to 500 MHz.

• Core: ARM® 32-bit Cortex® -M7 CPU with TrustZone® and FPU.

• Performance benchmark:

  • 1284 DMPIS/MHz (Dhrystone 2.1)

• Security

  • Arm® TrustZone® with ARMv8-M mainline security extension

  • Up to 8 configurable SAU regions

  • TrustZone® aware and securable peripherals

  • Flexible lifecycle scheme with secure debug authentication

  • Preconfigured immutable root of trust (ST-iROT)

  • SFI (secure firmware installation)

  • Secure data storage with hardware unique key (HUK)

  • Secure firmware upgrade support with TF-M

  • 2x AES coprocessors including one with DPA resistance

  • Public key accelerator, DPA resistant

  • On-the-fly decryption of Octo-SPI external memories

  • HASH hardware accelerator

  • True random number generator, NIST SP800-90B compliant

  • 96-bit unique ID

  • Active tampers

  • True Random Number Generator (RNG) NIST SP800-90B compliant

• Clock management:

  • 24 MHz crystal oscillator (HSE)

  • 32768 Hz crystal oscillator for RTC (LSE)

  • Internal 64 MHz (HSI) trimmable by software

  • Internal low-power 32 kHz RC (LSI)( ±5%)

  • Internal 4 MHz oscillator (CSI), trimmable by software

  • Internal 48 MHz (HSI48) with recovery system

  • 3 PLLs for system clock, USB, audio, ADC

• Power management

  • Embedded regulator (LDO) with three configurable range output to supply the digital circuitry

  • Embedded SMPS step-down converter

• RTC with HW calendar, alarms and calibration

• Up to 152 fast I/Os, most 5 V-tolerant, up to 10 I/Os with independent supply down to 1.08 V

• Up to 16 timers and 2 watchdogs

  • 16x 16-bit

  • 4x 32-bit timers with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input

  • 5x 16-bit low-power 16-bit timers (available in Stop mode)

  • 2x watchdogs

  • 1x SysTick timer

• Memories

  • Up to 64KB Flash, 2 banks read-while-write

  • 1 Kbyte OTP (one-time programmable)

  • 640 KB of SRAM including 64 KB with hardware parity check and 320 Kbytes with flexible ECC

  • 4 Kbytes of backup SRAM available in the lowest power modes

  • Flexible external memory controller with up to 16-bit data bus: SRAM, PSRAM, FRAM, SDRAM/LPSDR SDRAM, NOR/NAND memories

  • 2x OCTOSPI memory interface with on-the-fly decryption and support for serial PSRAM/NAND/NOR, Hyper RAM/Flash frame formats

  • 1x HEXASPI memory interface with on-the-fly decryption and support for serial PSRAM/NAND/NOR, Hyper RAM/Flash frame formats

  • 2x SD/SDIO/MMC interfaces

• Rich analog peripherals (independent supply)

  • 2x 12-bit ADC with up to 5 MSPS in 12-bit

  • 1x Digital temperature sensor

• 35x communication interfaces

  • 1x USB Type-C / USB power-delivery controller

  • 1x USB OTG full-speed with PHY

  • 1x USB OTG high-speed with PHY

  • 3x I2C FM+ interfaces (SMBus/PMBus)

  • 1x I3C interface

  • 7x U(S)ARTS (ISO7816 interface, LIN, IrDA, modem control)

  • 2x LP UART

  • 6x SPIs including 3 muxed with full-duplex I2S

  • 2x SAI

  • 2x FDCAN

  • 2x SD/SDIO/MMC interface

  • 2x 16 channel DMA controllers

  • 1x 8- to 16- bit camera interface

  • 1x HDMI-CEC

  • 1x Ethernel MAC interface with DMA controller

  • 1x 16-bit parallel slave synchronous-interface

  • 1x SPDIF-IN interface

  • 1x MDIO slave interface

• CORDIC for trigonometric functions acceleration

• FMAC (filter mathematical accelerator)

• CRC calculation unit

• Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™

More information about STM32H7S7 can be found here:

• STM32H7Sx on www.st.com

• STM32H7Sx reference manual

Supported Features

The stm32h7s78_dk board supports the hardware features listed below.

on-chip / on-board

Feature integrated in the SoC / present on the board.

2 / 2

Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.

vnd,foo

Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

stm32h7s78_dk/stm32h7s7xx target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M7 CPU1	arm,cortex-m7
ADC	on-chip	STM32 ADC2	st,stm32-adc
Clock control	on-chip	STM32H7RS RCC (Reset and Clock controller)1	st,stm32h7rs-rcc
	on-chip	STM32 HSE Clock1	st,stm32-hse-clock
	on-chip	STM32 HSI Clock1	st,stm32h7-hsi-clock
	on-chip	Generic fixed-rate clock provider1 2	fixed-clock
	on-chip	STM32 LSE Clock1	st,stm32-lse-clock
	on-chip	STM32H7RS main PLL1 2	st,stm32h7rs-pll-clock
	on-chip	STM32 Clock multiplexer1	st,stm32-clock-mux
	on-chip	STM32 Microcontroller Clock Output (MCO)2	st,stm32-clock-mco
Counter	on-chip	STM32 counters10	st,stm32-counter
Flash controller	on-chip	STM32 Family flash controller1	st,stm32-flash-controller
GPIO & Headers	on-chip	STM32 GPIO Controller12	st,stm32-gpio
	on-board	GPIO pins exposed on Arduino Uno (R3) headers1	arduino-header-r3
I2C	on-chip	STM32 I2C V2 controller3	st,stm32-i2c-v2
I2S	on-chip	STM32H7 I2S controller1	st,stm32h7-i2s
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv7-M NVIC (Nested Vectored Interrupt Controller)1	arm,v7m-nvic
	on-chip	STM32H7RS External Interrupt Controller1	st,stm32h7rs-exti
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
MMU / MPU	on-chip	ARMv7-M Memory Protection Unit (MPU)1	arm,armv7m-mpu
MTD	on-chip	STM32 flash memory1	st,stm32-nv-flash
PHY	on-chip	This binding is to be used by all the usb transceivers which are built-in with USB IP1	usb-nop-xceiv
Pin control	on-chip	STM32 Pin controller1	st,stm32-pinctrl
PWM	on-chip	STM32 PWM2 6	st,stm32-pwm
Reset controller	on-chip	STM32 Reset and Clock Control (RCC) Controller1	st,stm32-rcc-rctl
RNG	on-chip	STM32 Random Number Generator1	st,stm32-rng
Sensors	on-chip	STM32 family TEMP node for production calibrated sensors with two calibration temperatures1	st,stm32-temp-cal
	on-chip	STM32 VBAT1	st,stm32-vbat
	on-chip	STM32 VREF+1	st,stm32-vref
Serial controller	on-chip	STM32 USART3	st,stm32-usart
	on-chip	STM32 UART2 2	st,stm32-uart
	on-chip	STM32 LPUART1	st,stm32-lpuart
SPI	on-chip	STM32H7 SPI controller1 4	st,stm32h7-spi
SRAM	on-chip	Generic on-chip SRAM description1	mmio-sram
Timer	on-chip	ARMv7-M System Tick1	arm,armv7m-systick
	on-chip	STM32 timers2 9	st,stm32-timers
	on-chip	STM32 low-power timer (LPTIM)1	st,stm32-lptim
USB	on-chip	STM32 OTGFS controller1	st,stm32-otgfs
Watchdog	on-chip	STM32 watchdog1	st,stm32-watchdog
	on-chip	STM32 system window watchdog1	st,stm32-window-watchdog

Zephyr board options

The STM32HS7 is a SoC with Cortex-M7 architecture. Zephyr provides support for building for Secure firmware.

The BOARD options are summarized below:

BOARD	Description
stm32h7s78_dk	For building Secure firmware

Connections and IOs

STM32H7S78-DK Discovery Board has 12 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

For more details please refer to STM32H7S78-DK Discovery board User Manual.

Default Zephyr Peripheral Mapping:

• USART_4 TX/RX : PD1/PD0 (VCP)

• USART_7 TX/RX : PE8/PE7 (Arduino USART7)

• USER_PB : PC13

• LD1 (green) : PO1

• LD2 (orange) : PO5

• LD3 (red) : PM2

• LD4 (blue) : PM3

• ADC1 channel 6 input : PF12

• USB OTG FS DM/DP : PM12/PM11

System Clock

STM32H7S78-DK System Clock could be driven by internal or external oscillator, as well as main PLL clock. By default System clock is driven by PLL clock at 500MHz, driven by 24MHz external oscillator (HSE).

Serial Port

STM32H7S78-DK Discovery board has 2 U(S)ARTs. The Zephyr console output is assigned to USART4. Default settings are 115200 8N1.

USB

STM32H7S78-DK Discovery board has 2 USB Type-C connectors. Currently, only USB port2 (FS) is supported.

Programming and Debugging

STM32H7S78-DK Discovery board includes an ST-LINK/V3E embedded debug tool interface.

Applications for the stm32h7s78_dk board configuration can be built and flashed in the usual way (see Building an Application and Run an Application for more details).

Flashing

The board is configured to be flashed using west STM32CubeProgrammer runner, so its installation is required.

Flashing an application to STM32H7S78-DK Discovery

Connect the STM32H7S78-DK Discovery to your host computer using the USB port. Then build and flash an application. Here is an example for the Hello World application.

Run a serial host program to connect with your Nucleo board:

$ minicom -D /dev/ttyACM0

Then build and flash the application.

# From the root of the zephyr repository
west build -b stm32h7s78_dk samples/hello_world
west flash

You should see the following message on the console:

Hello World! stm32h7s78_dk

Debugging

You can debug an application in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b stm32h7s78_dk samples/hello_world
west debug