April 2015

DocID027290 Rev 1

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AN4635

Application note

Minimization of power consumption using LPUART

in microcontrollers of the STM32L0 series

Introduction

Microcontrollers of the STM32L0 series feature an alternative UART interface, designed to

allow the MCU to operate with minimum power requirements.

This document aims to explain how to fully exploit the advantages of the Low Power UART

(LPUART), thus extending product battery life for the above mentioned products.

It shows in practical examples the extremely low power consumption of the device waiting

for a communication.

• Application note AN4445: “STM32L0xx ultra-low power features overview”

MCUs”.

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