STM32H7 performance software expansion for STM32Cube (AN4891)

The X-CUBE-PERF-H7 firmware aims to demonstrate the performance of the STM32H7x3 architecture with its Cortex®-M7 able to run at 400 MHz, and its instruction and data caches that unleash core performance with 0-wait-state-like execution from different memories, either internal or external, scattered across different domains (D1, D2, and D3) and accessed by the core either through the TCM buses or the AXIM bus.

The firmware is provided with several project configurations for the STM32H743I-EVAL evaluation board. Each project allows the execution of application code and data storage in different memory locations such as internal memories as well as external memories located in different domains (D1, D2 and D3). Firmware results demonstrate that performance is almost the same when internal memories or external memories or different domains are used for code execution or data storage. An FFT use case (provided by the CMSIS library) is proposed as an example with several toolchains: Keil® (MDK-ARM), IAR™ (EWARM), and System Workbench (SW4STM32). It can easily be ported to any other toolchain.

Key Features

  • STM32H7x3 performance demonstrator
  • Code execution and data storage in different memory locations
  • Cortex® -M7
  • Instruction cache (I-Cache)
  • Data cache (D-Cache)
  • D1, D2, and D3 domains
  • AXI and AHB bus matrices


Technical Documentation

Product Specifications
Description Version Size
DB3118 DB3118: STM32H7x3 performance software expansion for STM32Cube 1.0 150 KB
Application Notes
Description Version Size
AN4891 AN4891: STM32H7x3 system architecture and performance software expansion for STM32Cube 1.0 1 MB
User Manuals
Description Version Size
UM2312 UM2312: Development checklist for STM32Cube Expansion Packages 1.0 283 KB
UM2285 UM2285: Development guidelines for STM32Cube Expansion Packages 1.0 485 KB

Presentations & Training Material

Description Version Size
STM32 and STM8 embedded software solutions 6.0 2 MB

Publications and Collaterals

Description Version Size
STM32 Open Development Environment Brochure 17.09 1 MB


License Agreement
Description Version Size
SLA0048 SLA0048: Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 4.10 86 KB

Get Software

Part Number Software Version Marketing Status Supplier Order from ST
X-CUBE-PERF-H7 1.0.0 Active ST