January 2015

DocID026505 Rev 1

1/25

1

AN4538

Application note

Power consumption optimization with STM32F3xx microcontrollers

Introduction

This application note describes how to optimize the power consumption of an application

based on STM32F3xx microcontrollers.

Reducing power consumption while performing complex real-time applications presents a

major challenge for the recent embedded applications.

This application note is splitted in two main parts:

•

The first part gives an overview of low-power design integrated features and

techniques to reduce the power consumption.

•

The second part describes a use case (a smart motor control application) that

highlights the power efficiency of STM32F3xx microcontrollers for the competitive

applications of the embedded system market.

This application note is provided with the STSW-STM32036 software package that contains

an example of STM32F3xx microcontroller low-power application. This application is based

on the USART, DMA, timer, comparator, RTC peripherals using STM32F3xx microcontroller

low-power modes and features.

Table 1. Applicable products and software

Type

Part numbers

Microcontrollers

STM32F301x6/8,

STM32F302x6/8/B/C/D/E,

STM32F303x6/8/B/C/D/E,

STM32F334xx, STM32F373xx,

STM32F318xx, STM32F328xx, STM32F358xx, STM32F378xx,

STM32F398xx

Software

STSW-STM32036

www.st.com