The STM32L431xx devices are the ultra-low-power microcontrollers based on the high-performance ARM® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all ARM single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.
The STM32L431xx devices embed high-speed memories (Flash memory up to 256 Kbyte, 64 Kbyte of SRAM), a Quad SPI flash memories interface (available on all packages) and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
The STM32L431xx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and Firewall.
The devices offer a fast 12-bit ADC (5 Msps), two comparators, one operational amplifier, two DAC channels, an internal voltage reference buffer, a low-power RTC, one general-purpose 32-bit timer, one 16-bit PWM timer dedicated to motor control, four general-purpose 16-bit timers, and two 16-bit low-power timers.
In addition, up to 21 capacitive sensing channels are available.
They also feature standard and advanced communication interfaces.
Key Features
Description | Version | Size |
---|---|---|
DS11453: Ultra-low-power ARM® Cortex®-M4 32-bit MCU+FPU, 100DMIPS, up to 256KB Flash, 64KB SRAM, analog, audio | 1.0 | 2 MB |
Description | Version | Size |
---|---|---|
RM0394: STM32L431xx STM32L433xx STM32L443xx advanced ARM®-based 32-bit MCUs | 2.0 | 24 MB |
Description | Version | Size |
---|---|---|
PM0214: STM32F3, STM32F4 and STM32L4 Series Cortex®-M4 programming manual | 5.0 | 3 MB |
Description | Version | Size |
---|---|---|
ES0320: STM32L431xx device limitations | 3.0 | 371 KB |
Description | Version | Size |
---|---|---|
STM32L4 Boundary Scan Description Language (BSDL) files | 2.0 | 72 KB |
STM32L4 CAD Symbol and Footprint files | 1.2 | 1 MB |
STM32L4 IBIS models | 2.0 | 7 MB |
Description | Version | Size |
---|---|---|
STM32 Embedded Software overview | 2.3.0 | 777 KB |
STM32 and STM8 embedded software solutions | 2.0 | 2 MB |
STM32L4 MCU series - Excellence in ultra-low-power with performance | 4.0 | 1 MB |
Description | Version | Size |
---|---|---|
Get ready for the largest IoT development ecosystem | 16.08 | 721 KB |
STM32 Nucleo boards | 16.12 | 885 KB |
STM32 for makers Releasing your creativity | 16.09 | 1 MB |
STM32L4 Series - Ultra-low-power and performance | 16.07 | 382 KB |
Description | Version | Size |
---|---|---|
STM32™ 32-bit MCU family - Leading supplier of ARM® Cortex®-M microcontrollers | 16.02 | 1 MB |
STM32L series - Ultra-low-power 32-bit MCUs | 16.03 | 3 MB |
Description | Version | Size |
---|---|---|
Design & Elektronik magazine - Benchmark ULPBench debunked | 1.1 | 12 MB |
Part Number | Manufacturer | Description |
---|---|---|
ST-LINK/V2 | ST | ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 |
STM32-PRIMER/LAB | Raisonance complete EvoPrimer ready-to-use for STM32 standalone programmer & application monitor | |
STX-RLINK | Raisonance | In-circuit debugger/programmer for STM8, ST7, STM32, STR7 and STR9 microcontrollers |
Part Number | Manufacturer | Description |
---|---|---|
CoIDE | CooCox | CooCox CoIDE, a free and highly-integrated software development environment for ARM Cortex MCUs |
CosmicIDE | Cosmic | Cosmic ARM/Cortex "M" Cross Development Tools for STM32 Microcontroller |
CrossWorks | Rowley | Rowley Associates CrossWorks, integrated development environment with JTAG Flash download and debug |
DS-5 | ARM | ARM Development Studio 5 (DS-5) provides best-in-class tools for the broadest range of ARM processor-based platforms |
EXP-TRACE | ExpressLogic | Express Logic TraceX Graphical finetuning tool |
FLASHER-STM32 | ST | STM32 Flash loader demonstrator (UM0462) |
Hitop5 | Hitex | Universal user interface, IDE and debugger for all Hitex development tools |
IAR-EWARM | IAR | IAR Integrated development environment and optimizing C/C++ compiler for ARM Cortex-M |
MDK-ARM-STM32 | Keil | MDK-ARM software development environment for Cortex-M based MCUs |
MULTI | GreenHills Software | GreenHills integrated development and debug environment for embedded applications using C and C++ |
PER-Tracealyzer | Percepio | Percepio run-time trace analyser for STM32 MCU |
PLSUDE-STM32 | Pls | Debug and emulator platform with optimized Trace and Flash support for STM32 Cortex-M based MCU's by PLS development tools |
RIDE-STM32 | Raisonance | Raisonance branded integrated development environment for STM32 MCUs |
ST-MCU-FINDER | STM32 & STM8 product finder app for smartphone & tablet | |
STM-STUDIO-STM32 | ST | STM Studio run-time variables monitoring and visualization tool for STM32 microcontrollers |
STM32CubeMX | ST | STM32Cube initialization code generator |
STSW-STM32080 | ST | DfuSe USB device firmware upgrade STMicroelectronics extension: contains the demo GUI, debugging GUI, all sources files and the protocol layer (UM0412) |
STSW-STM32095 | ST | STM32CubeMX Eclipse plug in for STM32 configuration and initialization C code generation |
STSW-STM32102 | ST | STM32 Virtual COM Port Driver |
STSW-STM32103 | ST | STM32 Serial Wire Viewer (SWV) and Embedded Trace Macrocell (ETM)capabilities. Examples and technical note. |
STSW-STM32153 | ST | STM32-BLE Toolbox for Android (AN4571) |
STVP-LIB-STM32 | ST | STVP programming toolkit: C++ source files for creating PC programming interface |
STVP-STM32 | ST | ST Visual Programmer STM32 |
SW4STM32 | AC6 | System Workbench for STM32: free IDE on Windows, Linux and OS X |
TASKINGVX-STM32 | TASKING | Altium's C/C++ compiler and debugger tools for ARM based MCUs |
TrueSTUDIO | Atollic | The premier C/C++ development tool for STM32 development, with its unrivalled feature set and unprecedented integration |
iSYS-winIDEAOpen | iSYSTEM | iSYSTEM's free unlimited software development platform for all STM32 Cortex-M based devices |
mikroBasicPRO | Mikroelectronika | MikroElektronika full-featured Basic compiler which makes STM32 development suitable for everyone |
mikroCPRO | Mikroelectronika | MikroElektronika full-featured ANSI C compiler for STM32 devices. It features an intuitive IDE, powerful compiler with advanced optimizations |
mikroPascalPRO | Mikroelectronika | MikroElektronika full-featured Pascal compiler for STM32 devices. It has an intuitive IDE with docking support, rich with features, advanced text editor, many available tools, libraries and examples |
winIDEA-STM32 | iSYSTEM | iSYSTEM's complete software development and test solution for the STM32 MCUs |
Part Number | Manufacturer | Description |
---|---|---|
ALTIA-GUI | Altia Inc | Altia DeepScreen for STM32: Graphical user interface (GUI) |
CMX-CANopen | CMX Systems Inc | CANopen Industrial Automation for STM32, from CMX Systems Inc |
CMX-FFS | CMX Systems Inc | Flash File System for STM32, from CMX Systems Inc |
CMX-INet | CMX Systems Inc | TCP/IP v4 or v6 stack for STM32, from CMX Systems Inc |
CMX-MicroNet | CMX Systems Inc | TCP/IP v4 with small footprint for STM32, from CMX Systems Inc |
CMX-RTX | CMX Systems Inc | Real Time OS for STM32, from CMX Systems Inc |
CMX-TCP/IP | CMX Systems Inc | TCP/IP v4 stack for STM32, from CMX Systems Inc |
CMX-Tiny | CMX Systems Inc | Real Time OS with small footprint for STM32, from CMX Systems Inc |
CMX-USBDevice | CMX Systems Inc | USB Device stack for STM32, from CMX Systems Inc |
CMX-USBHost | CMX Systems Inc | USB Host stack for STM32, from CMX Systems Inc |
EXP-FILE | ExpressLogic | Express Logic FileX file system |
EXP-RTOS | ExpressLogic | Express Logic ThreadX Real time operating system (RTOS) |
EXP-TCP | ExpressLogic | Express Logic NetX and NetX Duo TCP/IP stacks |
EXP-USB | ExpressLogic | Express Logic USBX USB stack |
FREE-RTOS | FreeRTOS | FreeRTOS Real Time Operating System for STM32 ARM Cortex-M Microcontrollers families |
HCC-Bootloaders | HCC Embedded | Storage, USB or Serial Bootloader for STM32, from HCC Embedded |
HCC-FFS | HCC Embedded | All Flashs File Systems with fail-safe mechanisms for STM32, from HCC Embedded |
HCC-MISRA-TCP/IP | HCC Embedded | TCP/IP v4 or v6 stack for STM32, from HCC Embedded |
HCC-USB | HCC Embedded | USB Host & Device stacks for STM32, from HCC Embedded |
I-CUBE-nRF51DRV | ST | STM32Cube nRF51 Bluetooth Low Energy (BLE) embedded software |
Men-Nucleus-SF | Mentor Graphics | Nucleus SmartFit for STM32 |
ORYX-SSL | Oryx Embedded | Oryx CycloneSSL lightweight SSL/TLS implementation |
ORYX-TCP | Oryx Embedded | Oryx CycloneTCP TCP/IP stack (IPv4, IPv6) |
P&R-ProvenCore | Prove & Run | High security operating system from Prove & Run for STM32 ARM Cortex-M microcontrollers |
PRT-CANopen | Port | Port CANopen Protocol Stack / Library for STM32 |
PRT-EtherCat | Port | Port EtherCAT Protocol Stack / Library for STM32 |
PRT-Powerlink | Port | Port POWERLINK Protocol Stack / Library for STM32 |
PRT-Profinet | Port | Port PROFINET Protocol Stack / Library for STM32 |
STM32-WMA/DEC | ST | Audio Engine WMA Decoder and Utilities |
STM32CubeL4 | ST | Embedded software for STM32L4 series (HAL, Low Layer APIs and CMSIS drivers, USB, TouchSensing, File system, RTOS, Graphic - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards) |
TAP-KNX-KAIStack | Tapko | KNX home automation for STM8 and STM32, from Tapko Technologies GMBH |
WEI-KNX | Weinzierl | Weinzierl KNX standard communication protocols for the STM32 ARM Cortex-M Microcontrollers families (KNX Stack) |
WITT-MW | Wittenstein High Integrity Systems | CONNECT Middleware: TCP/IP, USB and File System components from WITTENSTEIN high integrity systems |
WITT-RTOS | OPENRTOS: High Performance RTOS from WITTENSTEIN high integrity systems | |
WITT-RTOS-SAFE | SAFERTOS: The Safety Critical RTOS from WITTENSTEIN high integrity systems | |
X-CUBE-CRYPTOLIB | ST | STM32 cryptographic firmware library software expansion for STM32Cube (UM1924) |
X-CUBE-DBFU | ST | STM32L0/L4 optimized usage of the dual bank structure of Flash memory (AN4767) |
X-CUBE-DSPDEMO | ST | Digital Signal Processing with STM32, software expansion for STM32Cube (AN4841) |
X-CUBE-FPUDEMO | ST | Floating point unit demonstration on STM32 microcontrollers, software expansion for STM32Cube (AN4044) |
X-CUBE-IAP-USART | ST | STM32Cube in-application programming using the USART embedded software (AN4657) |
X-CUBE-IRREMOTE | ST | Implementing transmitters and receivers for infrared remote control protocols using STM32Cube (AN4834) |
X-CUBE-LPTIMER | ST | Low-power timer (LPTIM) applicative use-cases on STM32 MCUs STM32Cube Expansion software |
X-CUBE-LPUART | ST | STM32Cube embedded software demo of power consumption using LPUART (AN4635) |
X-CUBE-PCROP | ST | Proprietary code read-out protection (PCROP) software expansion for STM32Cube (AN4701 and AN4758) |
X-CUBE-RC-CALIB | ST | STM32L0 and STM32L4 calibration software expansion for STM32Cube (AN4631 and AN4736) |
X-CUBE-RTC | ST | Real Time Clock (RTC) software expansion for STM32Cube (AN4759) |
X-CUBE-SMBUS | ST | STM32Cube SMBus/PMBus embedded software (AN4502) |
X-CUBE-nRF51DRV | ST | STM32Cube nRF51 Bluetooth Low Energy (BLE) embedded software |
eCC-CAN | eCosCentric | CANopen Industrial Automation for STM32, from eCosCentric |
eCC-CEE-J | eCosCentric | Embedded Java virtual machine for STM32, from eCosCentric |
eCC-RedBoot | eCosCentric | Standard bootstrap firmware for STM32, from eCosCentric |
eCC-SecureShell | eCosCentric | Secure Shell daemon SSH-2 for STM32, from eCosCentric |
eCC-USB | eCosCentric | USB Host & Device stacks for STM32, from eCosCentric |
eCC-YAFFS | eCosCentric | NAND Flash File System for STM32, from eCosCentric |
eCC-eXtremeDB | eCosCentric | Embedded in-memory database for STM32, from eCosCentric |
emtas-CANopen | EMTAS | CANopen Protocol Stack for STM32 |
Part Number | Manufacturer | Description |
---|---|---|
32L476GDISCOVERY | ST | Discovery kit with STM32L476VG MCU |
NUCLEO-L432KC | ST | STM32 Nucleo-32 development board with STM32L432KC MCU, supports Arduino connectivity |
NUCLEO-L476RG | STM32 Nucleo-64 development board with STM32L476RG MCU, supports Arduino and ST morpho connectivity | |
P-NUCLEO-LRWAN1 | Low-power wireless Nucleo pack with Nucleo-L073RZ and LoRa expansion board | |
STM32-PRIMER | Raisonance | Raisonance complete Primer ready to use for easy evaluation and development with STM32 MCUs |
STM32L476G-EVAL | Evaluation board with STM32L476ZG MCU |
Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
---|---|---|---|---|---|---|---|---|---|
STM32L431KBU6 | UFQFPN 32 5x5x0.55 | Tray | -40 | 85 | 2.045 | 10000 | NEC | 3A991A2 | CHINA |
Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
---|---|---|---|---|
STM32L431KBU6 | UFQFPN 32 5x5x0.55 | Industrial | Ecopack2 |