AN4547 Datasheet, PDF (1/6 Pages) STMicroelectronics – Designers of STM32 microcontroller applications must have the possibility

AN4547
Application note
Migrating from STM32F407xx/417xx to
STM32F427xx/429xx/437xx/439xx
Introduction
Designers of STM32 microcontroller applications must have the possibility to easily replace
one microcontroller with another from the same product series. Reasons for migrating an
application to a different microcontroller can be for example;
 to fulfill higher product requirements, extra demands on memory size, or an increased
number of I/Os.
 to meet cost reduction constraints that require to switch to smaller components and shrink
the PCB area.
This application note is written as a help with the analysis of the steps involved when
migrating from an existing STM32F407xx/417xx-based design to the
STM32F427xx/429xx/437xx/439xx one withing the high performance STM32F4 series.
This application note gathers the most important information and presents the main
considerations to address.
Table 1 provides the list of products to which this document applies.
This application note is not exhaustive and comes as a complement of other product
specifications available on www.st.com/stm32:
 Datasheets
– DS8597 and DS8626 for STM32F407xx/417xx microcontrollers respectively,
– DS9405 and DS9484 for STM32F427xx/429xx/437xx/439xx microcontrollers
respectively.
 Errata sheets
– STM32F405xx/407xx and STM32F415xx/417xx device limitations,
– STM32F427xx/437xx and STM32F429xx/439xx line limitations.
 Reference manual
– RM0090 - STM32F405xx/07xx, STM32F415xx/17xx, STM32F42xxx and
STM32F43xxx advanced ARM®-based 32-bit MCUs
 Programming manual
– PM0214 - STM32F3 and STM32F4 Series Cortex^®-M4 programming manual
 Application note
– AN4488 - Getting started with STM32F4xxxx MCU hardware development,
– AN2606 - STM32 microcontroller system memory boot mode.
June 2014
DocID026596 Rev 1
1/6
www.st.com