February 2015

DocID027161 Rev 1

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AN4617

Application note

Migrating between STM32F0 and STM32L0 microcontrollers

Introduction

For designers of STM32 microcontroller applications, it is important to be able to easily

replace one microcontroller type with another one of the same product family.

Migration of an application to a different microcontroller is frequent, because of new product

requirements: this usually requires increase of memory density, and of the I/Os number.

I/Os. On the other hand, cost reduction objectives may force the switch to smaller

components, or shrink of the PCB area. Another important factor is the effort to decrease

overall power consumption, especially if application is sensitive to that topic.

This application note is written to help users to analyze the steps needed to migrate from a

STM32F0 microcontroller to one of the STM32L0 series and vice versa. It summarizes the

most relevant informations and lists the vital aspects to be addressed.

To migrate an application between the STM32F0 and the STM32L0 series, user must

carefully analyze the hardware migration, the peripheral migration and then the firmware

migration.

To benefit fully from the information contained in this application note, the user should be

familiar with the STM32 microcontroller family, for this we recommend to look at the

following documents that are available on www.st.com:

• the STM32F0 series reference manuals (RM0091 and RM0360) and STM32F0

datasheets;

• the STM32L0 series reference manuals (RM0367, RM0376 and RM0377) and STM32L0

datasheets.

For an overview of the whole STM32 series and a comparison of the different features of

each STM32 product series, please refer to AN3364 “Migration and compatibility guidelines

for STM32 microcontroller applications”.

Table 1 lists the products concerned by this application note.

Table 1. Applicable products

Type

Product series

Microcontrollers

STM32F0

STM32L0

www.st.com