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December 2017

DocID027922 Rev 4

1/3

STM32CubeL4

STM32Cube MCU Package for STM32L4 Series and STM32L4+

Series with HAL, low-layer drivers and dedicated middleware

Data brief

Features

• Consistent and complete embedded software

offer that frees the user from dependency

issues

• Maximized portability between all STM32

Series supported by STM32Cube

• More than 100 examples for easy

understanding

• High quality HAL and low-layer API drivers

• STM32L4 and STM32L4+ dedicated

middleware including USB Host and Device,

FAT file system, HAL and low-layer drivers,

RTOS, Graphics and touch sensing library

• Free user-friendly license terms

• Update mechanism that can be enabled by the

user to be notified of new releases

Description

initiative to make developers' lives easier by

reducing development effort, time and cost.

STM32Cube is the implementation of STMCube

that covers the whole STM32 portfolio.

STM32Cube includes STM32CubeMX, a

graphical software configuration tool that allows

the generation of C initialization code using

graphical wizards.

It also comprises the STM32CubeL4 MCU

Package composed of the STM32Cube hardware

abstraction layer (HAL) and the low-layer (LL)

APIs, plus a consistent set of middleware

components (RTOS, USB, FAT file system,

Graphics and STM32 touch sensing). All

embedded software utilities are delivered with a

full set of examples running on

STMicroelectronics boards.

The STM32Cube HAL is an STM32 embedded

software layer that ensures maximized portability

across the STM32 portfolio, while the LL APIs

make up a fast, light-weight, expert-oriented layer

which is closer to the hardware than the HAL.

HAL and LL APIs can be used simultaneously

with a few restrictions.

Both the HAL and LL APIs are production-ready

and have been developed in compliance with

documented exceptions (reports available on

demand) and ISO/TS 16949. Furthermore, ST-

specific validation processes add a deeper-level

qualification.

STM32CubeL4 gathers in one single package all

the generic embedded software components

required to develop an application on STM32L4

or STM32L4+ microcontrollers. Following

STM32Cube initiative, this set of components is

highly portable, not only within STM32L4 Series

and STM32L4+ Series but also to other STM32

Series. In addition, the low-layer APIs provide an

alternative, high-performance, low-footprint

solution to the STM32CubeL4 HAL at the cost of

portability and simplicity.

HAL and LL APIs are available under open-

source BSD license for user convenience.

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