Programming an external Flash memory using the UART bootloader built-in STM32 microcontrollers, software expansion for STM32Cube (AN4852)

The internal bootloader built-in STM32 microcontrollers is designed to allow the programming of the internal Flash and RAM memories using one or more embedded serial peripherals like USART, CAN, USB, I2C, SPI or others.

The X-CUBE-EXTBOOT is developed to allow the programming of an external Quad-SPI Flash memory using the internal bootloader via the UART protocol. It can be a driver for users to develop their own bootloaders.

This firmware is developed with the STM32Cube embedded software. It uses the IAR™ EWARM, the Keil® MDK-ARM™ and the SW4STM32 tool chains and can be easily tailored for any other tool chain.

The STM32446E-EVAL boards have been used to develop and validate the firmware. However, it can be easily ported on other platforms.

For more details refer to the application note Programming an external Flash memory using the UART bootloader built-in STM32 microcontrollers (AN4852).

Key Features

  • STM32 bootloader
  • UART protocol
  • Quad-SPI external memory

Resources

Technical Documentation

Product Specifications
Description Version Size
DB2942 DB2942: Programming an external Flash memory using the UART bootloader built-in STM32, software expansion for STM32Cube 1.0 121 KB
Application Notes
Description Version Size
AN4852 AN4852: Programming an external Flash memory using the UART bootloader built-in STM32 microcontrollers 1.0 836 KB

Publications and Collaterals

Brochures
Description Version Size
STM32 Open Development Environment Brochure 15.10 4 MB

Legal

License Agreement
Description Version Size
SLA0048 SLA0048: Mix Liberty + OSS + 3rd- party V1 - SOFTWARE LICENSE AGREEMENT 2.32 113 KB

Get Software

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

 

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