Migration guide from STM32F7 Series and STM32H743/753 line, to STM32H7A3/7B3 and STM32H7B0 Value line devices

PublishTime：2021-12-08

Designers of STM32 microcontroller applications must be able to easily replace one microcontroller type with another one from the same product family or from a different family. The reasons for migrating an application to a different microcontroller can befor example:
● To fulfill extended product requirements, extra demands on memory size, or an increased number of I/Os
● To meet cost reduction constraints that require a switch to smaller components and a shrunk PCB area
This application note analyzes the steps required to migrate applications from existing STM32F7 Series or STM32H743/753 line to STM32H7A3/7B3 line and STM32H7B0 Value line devices.
The STM32H743/753 line is named STM32H743/753 devices, and the STM32H7A3/7B3 line and STM32H7B0 Value line are named as STM32H7A3/7B0/7B3 device in this document.
This application note provides a guideline on both hardware and peripheral migration. To fully understand all the information provided by this application note, the user must be familiar with the STM32 microcontroller family.
For additional information, refer to the following documents available:
● STM32F75xxx and STM32F74xxx advanced Arm®-based 32-bit MCUs reference manual (RM0385)
● STM32F76xxx and STM32F77xxx advanced Arm®-based 32-bit MCUs reference manual (RM0410)
● STM32H743/753 advanced Arm®-based 32-bit MCUs reference manual (RM0433)
● STM32H7A3/B0/B3 advanced Arm®-based 32-bit MCUs reference manual (RM0455)

Brand of Product：	ST
Part#：	STM32 、 STM32F7 Series 、 STM32F7 、 STM32H743 、 STM32H753 、 STM32H7A3 、 STM32H7B3 、 STM32H7B0 、 STM32F75xxx 、 STM32F74xxx 、 STM32F76xxx 、 STM32F77xxx 、 STM32F2xxx 、 STM32F73xxx 、 STM32F72xxx More Part#
Product Category：	microcontroller 、 MCUs More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	25-May-2020
Version Number：	Rev 4
Data Encoding：	AN5293
Data Size：	566 KB

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