April 2014

DocID017068 Rev 4

1/26

AN3156

Application note

USB DFU protocol used in the STM32 bootloader

Introduction

This application note describes the USB DFU protocol used in STM32 microcontroller

bootloader. It details each supported command. For more information about the USB

hardware resources and requirements for your device bootloader, please refer to the

“STM32 system memory boot mode” application note (AN2606).

Table 1. Applicable products

Type

Part number or product series

Microcontrollers

STM32L1 series:

– STM32L1xxxC, STM32L1xxxD, STM32L1xxxE

STM32F0 series

STM32F1 series:

– STM32F105xx, STM32F107xx

STM32F2 series

STM32F3 series:

– STM32F373xx, STM32F302xx, STM32F303xB(C), STM32F301xx

STM32F4 series:

– STM32F401xx, STM32F411xx

– STM32F405xx, STM32F407xx

– STM32F415xx, STM32F417xx

– STM32F427xx, STM32F429xx

– STM32F437xx, STM32F439xx

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