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The access line ultra-low-power STM32L051x6/8 microcontrollers incorporate the high-performance Arm Cortex-M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (64 Kbytes of Flash program memory, 2 Kbytes of data EEPROM and 8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.
The STM32L051x6/8 devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes.
The STM32L051x6/8 devices offer several analog features, one 12-bit ADC with hardware oversampling, two ultra-low-power comparators, several timers, one low-power timer (LPTIM), three general-purpose 16-bit timers and one basic timer, one RTC and one SysTick which can be used as timebases. They also feature two watchdogs, one watchdog with independent clock and window capability and one window watchdog based on bus clock.
Moreover, the STM32L051x6/8 devices embed standard and advanced communication interfaces: up to two I2C, two SPIs, one I2S, two USARTs, a low-power UART (LPUART), .
The STM32L051x6/8 also include a real-time clock and a set of backup registers that remain powered in Standby mode.
The ultra-low-power STM32L051x6/8 devices operate from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. They are available in the -40 to +125 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.Key Features
- Ultra-low-power platform
- 1.65 V to 3.6 V power supply
- -40 to 125 °C temperature range
- 0.27 µA Standby mode (2 wakeup pins)
- 0.4 µA Stop mode (16 wakeup lines)
- 0.8 µA Stop mode + RTC + 8-Kbyte RAM retention
- 88 µA/MHz in Run mode
- 3.5 µs wakeup time (from RAM)
- 5 µs wakeup time (from Flash memory)
- Core: Arm® 32-bit Cortex®-M0+ with MPU
- From 32 kHz up to 32 MHz max.
- 0.95 DMIPS/MHz
- Memories
- Up to 64-Kbyte Flash memory with ECC
- 8-Kbyte RAM
- 2 Kbytes of data EEPROM with ECC
- 20-byte backup register
- Sector protection against R/W operation
- Up to 51 fast I/Os (45 I/Os 5V tolerant)
- Reset and supply management
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Ultra-low-power POR/PDR
- Programmable voltage detector (PVD)
- Clock sources
- 1 to 25 MHz crystal oscillator
- 32 kHz oscillator for RTC with calibration
- High speed internal 16 MHz factory-trimmed RC (+/- 1%)
- Internal low-power 37 kHz RC
- Internal multispeed low-power 65 kHz to 4.2 MHz RC
- PLL for CPU clock
- Pre-programmed bootloader
- USART, SPI supported
- Development support
- Serial wire debug supported
- Rich Analog peripherals
- 12-bit ADC 1.14 Msps up to 16 channels (down to 1.65 V)
- 2x ultra-low-power comparators (window mode and wake up capability, down to 1.65 V)
- 7-channel DMA controller, supporting ADC, SPI, I2C, USART, Timers
- 7x peripheral communication interfaces
- 2x USART (ISO 7816, IrDA), 1x UART (low power)
- Up to 4x SPI 16 Mbits/s
- 2x I2C (SMBus/PMBus)
- 9x timers: 1x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC, 1x 16-bit basic, and 2x watchdogs (independent/window)
- CRC calculation unit, 96-bit unique ID
- All packages are ECOPACK2
- Ultra-low-power platform
Circuit Diagram
Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | ECCN (US) | Country of Origin | Temperature (°C) | Timers (typ) (16-bit) | Timers (typ) (32-bit) | Number of A/D Converters (typ) | Number of A/D Converters (typ) | Number of A/D Converters (typ) | D/A Converters (typ) (12-bit) | Comparator | I/Os (High Current) | CAN (typ) | CAN FD (typ) | SPI (typ) | I2S (typ) | USART (typ) | UART (typ) | Integrated op-amps | SMPS | More info | Budgetary Price (US$)*/Qty | Order from ST | Order from Distributors | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||||||||||||||||||
| STM32L051K8U3 | UFQFPN 32 5x5x0.55 | Tray | Active | 3A991A2 | CHINA | -40 | 125 | 4 | - | - | - | - | - | 2 | 27 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 27 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.458 / 10k | Buy now | Check Availability |
| STM32L051K8U3TR | UFQFPN 32 5x5x0.55 | Tape And Reel | Active | 3A991A2 | CHINA | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | MORE INFO Timers (typ) (16-bit): - Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: - I/Os (High Current): - CAN (typ): - CAN FD (typ): - SPI (typ): - I2S (typ): - USART (typ): - UART (typ): - Integrated op-amps: - SMPS: - | 1.458 / 10k | No availability of distributors reported, please contact our sales office | |
| STM32L051K8U6 | UFQFPN 32 5x5x0.55 | Tray | Active | 3A991A2 | CHINA | -40 | 85 | 4 | - | - | - | - | - | 2 | 27 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 27 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.2677 / 10k | Buy now | Check Availability |
| STM32L051K8T6 | LQFP 32 7x7x1.4 | Tray | Active | 3A991A2 | CHINA | -40 | 85 | 4 | - | - | - | - | - | 2 | 25 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 25 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.3371 / 10k | Buy now | Check Availability |
| STM32L051K8T6TR | LQFP 32 7x7x1.4 | Tape And Reel | Active | 3A991A2 | CHINA | -40 | 85 | 4 | - | - | - | - | - | 2 | 25 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 25 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.3371 / 10k | Buy now | Check Availability |
| STM32L051K8U6TR | UFQFPN 32 5x5x0.55 | Tape And Reel | Active | 3A991A2 | CHINA | -40 | 85 | 4 | - | - | - | - | - | 2 | 27 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 27 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.2677 / 10k | Buy now | Check Availability |
| STM32L051K8U7 | UFQFPN 32 5x5x0.55 | Tray | Active | 3A991A2 | CHINA | -40 | 105 | 4 | - | - | - | - | - | 2 | 27 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 27 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.3565 / 10k | Buy now | Check Availability |
| STM32L051K8U7TR | UFQFPN 32 5x5x0.55 | Tape And Reel | Active | 3A991A2 | CHINA | -40 | 105 | 4 | - | - | - | - | - | 2 | 27 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 27 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.3565 / 10k | No availability of distributors reported, please contact our sales office | |
| STM32L051K8U6DTR | UFQFPN 32 5x5x0.55 | Tape And Reel | Active | 3A991A2 | CHINA | -40 | 85 | 4 | - | - | - | - | - | 2 | 27 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 27 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.2677 / 10k | Buy now | Check Availability |
| STM32L051K8T7 | LQFP 32 7x7x1.4 | Tray | Active | 3A991A2 | CHINA | -40 | 105 | 4 | - | - | - | - | - | 2 | 25 | - | - | 1 | - | 2 | - | - | - | MORE INFO Timers (typ) (16-bit): 4 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 25 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 2 UART (typ): - Integrated op-amps: - SMPS: - | 1.4308 / 10k | Buy now | Check Availability |
STM32L051K8U3TR
Package
UFQFPN 32 5x5x0.55Packing Type
Tape And ReelBudgetary Price (US$)*/Qty
1.458 / 10kSTM32L051K8U7TR
Package
UFQFPN 32 5x5x0.55Packing Type
Tape And ReelBudgetary Price (US$)*/Qty
1.3565 / 10k(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
Featured Videos
This video is about the STM32L5, our recently announced ultra-low power microcontroller bringing a new security dimension. The STM32L5 is now in full production and all its ecosystem is available including hardware kits, software tools, firmware and all documentations of course. This is our first STM32 based on Cortex-M33 and its Trustzone and using specific ST security implementation - watch the video to find out more!
The STM32L5 is based on Arm® Cortex-M33 and TrustZone® technology combined with STMicroelectronics security implementation. On your STM32L562E-DK discovery board, TrustZone is disabled (factory setting) and you can develop as on any other STM32 device. This video shows how to enable TrustZone on STM32L562E-DK discovery using STM32CubeProgrammer and create, compile and debug or run a new project with STM32CubeIDE. It also shows how to open an example project delivered in STM32CubeL5 MCU Package, modify, compile and debug or run it. For further information, you can refer to AN5394 and AN5424 application notes.
MadeForSTM32â„¢ is a new quality label delivered by ST, which is granted after an evaluation process. It helps engineers identify third party solutions with the highest level of integration and quality for the STM32 microcontrollers' ecosystem. MadeForSTM32â„¢ is offered to members of the ST Partner Program who want to go one step further in our collaboration, with the overall objective of contributing to a high-quality STM32 ecosystem.
Development Tools
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Picture Part number Manufacturer Description Arm Keil ULINKplus Arm Keil High-performance debug adapter, isolated, with JTAG, SWD, SWV, power measurement, and test I/O Arm Keil ULINKpro Arm Keil High-performance debug adapter via JTAG or SWD and streaming trace via SWV (data/event trace) or ETM (instruction trace) CYCLONE P&E Microcomputer Systems Automated, Stand-Alone Production Programmer, Debug & Test. CYCLONE FX P&E Microcomputer Systems Automated, Stand-Alone Production Programmer, Debug & Test. 
FlashPro Elprotronic Flash programmer for STM8 and ARM based MCUs. Flasher ATE SEGGER Microcontroller Flasher ATE is a gang-programmer for mass production Flasher Portable Plus SEGGER Microcontroller Flasher Portable Plus is a battery driven programming system Flasher Secure SEGGER Microcontroller Flasher Secure is a secure mass production programming system 
GangPro Elprotronic Gang programmer for STM8 and ARM based MCUs. I-jet IAR Systems Debug probe I-jet Trace IAR Systems Debug trace probe 
J-Link SEGGER Microcontroller Segger J-Link debug probe for STM32 J-Trace Pro for Cortex-M SEGGER Microcontroller SEGGER J-Trace Pro debug and trace probe Multilink ACP P&E Microcomputer Systems Debug Probe for ARM devices. Multilink Universal FX P&E Microcomputer Systems High-Speed Debug Probe for ARM and other devices. SIGFOX-USB2-C XoverIoT USB Kickstart-Development Kit. The SIGFOX-USB2 is a baseboard with a SIGFOX-DEV1-C monted on it. 
ST-LINK/V2 ST ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 
STLINK-V3SET ST STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8 Part NumberHigh-performance debug adapter, isolated, with JTAG, SWD, SWV, power measurement, and test I/O
High-performance debug adapter via JTAG or SWD and streaming trace via SWV (data/event trace) or ETM (instruction trace)
Automated, Stand-Alone Production Programmer, Debug & Test.
Automated, Stand-Alone Production Programmer, Debug & Test.
Flash programmer for STM8 and ARM based MCUs.
Flasher ATE is a gang-programmer for mass production
Flasher Portable Plus is a battery driven programming system
Flasher Secure is a secure mass production programming system
Gang programmer for STM8 and ARM based MCUs.
Debug probe
Debug trace probe
Segger J-Link debug probe for STM32
SEGGER J-Trace Pro debug and trace probe
Debug Probe for ARM devices.
High-Speed Debug Probe for ARM and other devices.
USB Kickstart-Development Kit. The SIGFOX-USB2 is a baseboard with a SIGFOX-DEV1-C monted on it.
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32
STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8
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Picture Part number Manufacturer Description Arm Keil MDK Arm Keil Complete software development solution for all STM32 devices. Includes C/C++ Compiler, IDE/Debugger, CMSIS, RTOS, middleware Arm Keil MDK for STM32F0, STM32L0 and STM32G0 Arm Keil Complete software development solution for all STM32F0, STM32L0 and STM32G0 devices. Includes C/C++ Compiler, IDE/Debugger, CMSIS components, RTOS Arm tool: ARM Development Studio ARM Development Solutions Comprehensive embedded toolchain for any Arm-based device: Eclipse-based IDE/debugger, C/C++ Compiler, CMSIS, performance analyzer, graphics debugger. CXSTM32 Cosmic Software STM32 Full Development Package (Compiler + Debugger) CoIDE CooCox CooCox CoIDE, a free and highly-integrated software development environment for ARM Cortex MCUs Compilers for ARM MikroElektronika mikroC PRO for ARM, mikroBasic PRO for ARM and mikroPascal PRO for ARM are fully-featured compilers for ARM® Cortex®-M0, M0+, M3, M4, and M7 microcontrollers. CrossWorks Rowley Rowley Associates CrossWorks, integrated development environment with JTAG Flash download and debug EMP-Thunder Emprog Emprog ThunderBench, fully integrated and well-crafted development C/C++ tools for ARM Cortex FLASHER-STM32 ST STM32 Flash loader demonstrator (UM0462) IAR C-RUN for Arm IAR Systems Run-time analysis tool; add-on product to IAR Embedded Workbench for Arm IAR C-STAT IAR Systems Static analysis tool; add-on product to IAR Embedded Workbench IAR Embedded Workbench for Arm IAR Systems Integrated Development Environment IAR Embedded Workbench for Arm - Functional Safety IAR Systems Integrated Development Environment IAR Visual State IAR Systems State-machine modelling tool MULTI Green Hills Software GreenHills integrated development and debug environment for embedded applications using C and C++ RIDE-STM32 Raisonance Raisonance branded integrated development environment for STM32 MCUs Remedy Bootloader Package RoweBots Remedy Bootloader - Easy Updates and Advanced Protection. Remedy Datalogger Package RoweBots Remedy Datalogger with capabilities for dynamic remote data logging and control. SEGGER Embedded Studio SEGGER Microcontroller Cross-platform Integrated Development Environment (IDE) for managing, building, testing, and deploying embedded applications SENSE Fieldscale An end-to-end solution for the design, schematic capture, and system-level simulation of capacitive touch sensors. 
ST MCU Finder ST STM32 and STM8 product finder for mobile devices and desktops 
ST-MCU-FINDER-PC ST STM32 and STM8 product finder for desktops 
STM-STUDIO-STM32 ST STM Studio run-time variables monitoring and visualization tool for STM32 microcontrollers 
STM32CubeIDE ST Integrated Development Environment for STM32 
STM32CubeMX ST STM32Cube initialization code generator 
STM32CubeProg ST STM32CubeProgrammer software for all STM32 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. 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 Storyboard Designer Crank Software Development Tools to create optimized GUIs. TASKINGVX-STM32 TASKING Altium's C/C++ compiler and debugger tools for ARM based MCUs 
TrueSTUDIO Atollic A powerful eclipse based C/C++ integrated development tool for your STM32 projects winIDEA-STM32 iSYSTEM iSYSTEM's complete software development and test solution for the STM32 MCUs Part NumberComplete software development solution for all STM32 devices. Includes C/C++ Compiler, IDE/Debugger, CMSIS, RTOS, middleware
Complete software development solution for all STM32F0, STM32L0 and STM32G0 devices. Includes C/C++ Compiler, IDE/Debugger, CMSIS components, RTOS
Comprehensive embedded toolchain for any Arm-based device: Eclipse-based IDE/debugger, C/C++ Compiler, CMSIS, performance analyzer, graphics debugger.
STM32 Full Development Package (Compiler + Debugger)
CooCox CoIDE, a free and highly-integrated software development environment for ARM Cortex MCUs
mikroC PRO for ARM, mikroBasic PRO for ARM and mikroPascal PRO for ARM are fully-featured compilers for ARM® Cortex®-M0, M0+, M3, M4, and M7 microcontrollers.
Rowley Associates CrossWorks, integrated development environment with JTAG Flash download and debug
Emprog ThunderBench, fully integrated and well-crafted development C/C++ tools for ARM Cortex
STM32 Flash loader demonstrator (UM0462)
Run-time analysis tool; add-on product to IAR Embedded Workbench for Arm
Static analysis tool; add-on product to IAR Embedded Workbench
Integrated Development Environment
Integrated Development Environment
State-machine modelling tool
GreenHills integrated development and debug environment for embedded applications using C and C++
Raisonance branded integrated development environment for STM32 MCUs
Remedy Bootloader - Easy Updates and Advanced Protection.
Remedy Datalogger with capabilities for dynamic remote data logging and control.
Cross-platform Integrated Development Environment (IDE) for managing, building, testing, and deploying embedded applications
An end-to-end solution for the design, schematic capture, and system-level simulation of capacitive touch sensors.
STM32 and STM8 product finder for mobile devices and desktops
STM32 and STM8 product finder for desktops
STM Studio run-time variables monitoring and visualization tool for STM32 microcontrollers
Integrated Development Environment for STM32
STM32Cube initialization code generator
STM32CubeProgrammer software for all STM32
DfuSe USB device firmware upgrade STMicroelectronics extension: contains the demo GUI, debugging GUI, all sources files and the protocol layer (UM0412)
STM32CubeMX Eclipse plug in for STM32 configuration and initialization C code generation
STM32 Virtual COM Port Driver
STM32 Serial Wire Viewer (SWV) and Embedded Trace Macrocell (ETM)capabilities. Examples and technical note.
STVP programming toolkit: C++ source files for creating PC programming interface
ST Visual Programmer STM32
System Workbench for STM32: free IDE on Windows, Linux and OS X
Development Tools to create optimized GUIs.
Altium's C/C++ compiler and debugger tools for ARM based MCUs
A powerful eclipse based C/C++ integrated development tool for your STM32 projects
iSYSTEM's complete software development and test solution for the STM32 MCUs
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Ecosystems
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Picture Part number Manufacturer Description Maia module WEPTECH elektronik Maia is a single embedded low cost wireless M-Bus RF Module developed specially for the AMR (Automatic Meter Reading) smart metering and smart grid infrastructure where the Wireless M-Bus standard (EN13757-4) and OMS standards are used. SIGFOX-MOD1-C / -E XoverIoT The SIGFOX-MOD1 are ultra-low-power modules designed especially for sensor node applications mounted with chip antenna. SIGFOX-MOD2-C / -E XoverIoT The SIGFOX-MOD2 are ultra-low-power Uplink-Only modules designed especially for sensor node applications using Sigfox, subGHz and proprietary protocols. SensiBLE SensiEDGE Ready-to-use BLE System-on-Module packed with sensors, low power ARM® 32-bit Cortex®-M4 CPU and coin battery. Speed up IoT product development today! SensiBLE 2.0 SensiEDGE SensiBLE 2.0 SoM integrates a rechargeable Li-Ion battery, a variety of sensors, and a low power Cortex M0 core that executes Bluetooth protocols. 
SensiBLE 2.1 SensiEDGE SensiBLE 2.1 SoM integrates a rechargeable Li-Ion battery, a variety of sensors, and a low power Cortex M0 core that executes Bluetooth protocols. SensiSUB SensiEDGE Connecting low-power SUB 1GHZ RF transceiver to the Cloud with fully customisable sensors, ARM® 32-bit Cortex®-M4 CPU and coin battery. Part NumberMaia is a single embedded low cost wireless M-Bus RF Module developed specially for the AMR (Automatic Meter Reading) smart metering and smart grid infrastructure where the Wireless M-Bus standard (EN13757-4) and OMS standards are used.
The SIGFOX-MOD1 are ultra-low-power modules designed especially for sensor node applications mounted with chip antenna.
The SIGFOX-MOD2 are ultra-low-power Uplink-Only modules designed especially for sensor node applications using Sigfox, subGHz and proprietary protocols.
Ready-to-use BLE System-on-Module packed with sensors, low power ARM® 32-bit Cortex®-M4 CPU and coin battery. Speed up IoT product development today!
SensiBLE 2.0 SoM integrates a rechargeable Li-Ion battery, a variety of sensors, and a low power Cortex M0 core that executes Bluetooth protocols.
SensiBLE 2.1 SoM integrates a rechargeable Li-Ion battery, a variety of sensors, and a low power Cortex M0 core that executes Bluetooth protocols.
Connecting low-power SUB 1GHZ RF transceiver to the Cloud with fully customisable sensors, ARM® 32-bit Cortex®-M4 CPU and coin battery.
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Embedded Software
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Picture Part number Manufacturer Description Arm Keil FuSa RTS Arm Keil Set of embedded software components qualified for use in the most safety-critical applications in automotive, medical,railway, and industrial systems. CycloneCrypto Oryx Embedded Cryptographic library CycloneSSL Oryx Embedded Embedded SSL/TLS library CycloneTCP Oryx Embedded Embedded TCP/IP stack (dual IPv4/IPv6) Embedded Office Safety AddOns Embedded Office The "Safety AddOns" provides pre-certified safety measures. Flexible Safety RTOS Embedded Office The "Flexible Safety RTOS" is a pre-certified real time kernel for use in safety critical systems with or without the need of formal approval through a product certification. FreeRTOS Kernel AWS The FreeRTOS kernel is an open source real time operating system and the de-facto standard solution for microcontrollers and small microprocessors Gizwits GAgent Gizwits An application program running on various communication modules that provide two-way data communication between upper-layer applications and devices. HCC Bootloaders HCC Embedded HCC has developed optimized bootloaders for many years and has a range of high quality solutions that will fit almost any scenario. HCC Embedded Encryption Manager (EEM) HCC Embedded Embedded Encryption Manager (EEM ) allows developers to secure embedded systems using multiple encryption or hash algorithms through a uniform interface. HCC FAT File Systems HCC Embedded HCC is renowned for its deep knowledge of flash storage media. In embedded systems, it is not possible to achieve the required efficiency, performance or reliability with a single file system. HCC Fail-Safe File System HCC Embedded All Flashs File Systems with fail-safe mechanisms for STM32, from HCC Embedded HCC IPSec/IKE HCC Embedded IPSec/IKE provides a robust approach to security in embedded applications such as cars, "point-of-sale" terminals, medical devices, industrial equipment and many others. HCC IPv4 and IPv6 HCC Embedded HCC has developed an advanced, embedded IPv6 - Dual IPv4/v6 stack with no third party or open source content using a structured software development process. HCC MISRA TCP/IP HCC Embedded MISRA Compliant TCP/IP is a highly efficient, embedded stack developed using a verifiable process and conforming strongly to MISRA coding standards. HCC MQTT HCC Embedded MQTT is a small and efficient machine-to-machine protocol. HCC Nichestack HCC Embedded InterNiche Technologies has been a leader in embedded networking for more than 25 years. Now a part of HCC Embedded, Nichestack technology is a valuable resource for any embedded developer. HCC SMFS HCC Embedded HCC has taken the radical approach of defining a system built around the needs of smart-meters. Metering applications usually have well-defined record structures and HCC has used its extensive flash experience to take advantage of this. HCC TLS SSL HCC Embedded Verifiable TLS/SSL: a highly optimized software module designed to provide secure network communications for embedded devices. HCC USB Stack HCC Embedded USB Host & Device stacks for STM32, from HCC Embedded. I-CUBE-EMBOS SEGGER Microcontroller embOS software expansion for STM32Cube I-CUBE-UNISON RoweBots UNISON software expansion for STM32Cube 
Nanoedge AIâ„¢ Cartesiam NanoEdge AIâ„¢ by Cartesiam is the firstMachine Learning Software specifically developed to entirely run on microcontrollers. Prevas Simple Connect Prevas A communication infrastructure that provides a secure instant communication between clients and devices connected through the Internet. ProvenCore-M Prove & Run High security operating system for STM32 Arm Cortex-M microcontrollers. STACKFORCE Wireless M-Bus Protocol Stack STACKFORCE Wireless M-Bus Protocol Stack, compliant to EN 13757-3/-4 and several other standards/specification based on it, such as OMSv3/v4, E/DSMR, CIG UNI/TS. STM32-WMA/DEC ST Audio Engine WMA Decoder and Utilities 
STM32CubeL0 ST STM32Cube MCU Package for STM32L0 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, File system, RTOS, Touch Sensing - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards) 
STM32SnippetsL0 ST Example Code snippets covering STM32 L0 serie Sigfox Connectivity Sigfox Sigfox IoT connectivity feed your innovation strategy and make the digital transformation of your business a reality. Sigfox IoT connectivity brings value in various business activities. With the continued miniaturization of sensors and technologic advancements such as energy harvesting, we will witness a continuous ow of data, merging the physical world to the digital world. Sigfox Geolocation Sigfox Sigfox Geolocation, the simplest and most efficient IoT location service. Sigfox Geolocation is a low-energy location service for all devices equipped with the simplest Sigfox module, without GPS. There is no need to retrofit to upgrade specific hardware, or to update software: Sigfox can now provide a location for all existing and future devices all over the world. Storyboard Engine Crank Software Embedded Software to create optimized GUIs. TEConcept IO-Link Device Software Stack TEConcept Our IO-Link software stack (IDS-BSS-V11/20) opens sensor and actuator manufacturers a cost efficient and easy way to integrate state-of-the-art IO-Link technology into their products. UNISON Busses RoweBots UNISON RTOS provides the possibility to work with the core serial busses. UNISON File System RoweBots UNISON FATFS and UNISON Power Safe FAT File System UNISON Kernel RoweBots UNISON Real Time Operating System Kernel UNISON Security RoweBots UNISON RTOS Security Protocols UNISON TCP/IP IPv6/IPv4 Networking Stack RoweBots Complete networking server with or without IPv6 and other network components. UNISON USB RoweBots UNISON USB Embedded Host Server, Embedded Device Server, OTG Server. UNISON Wireless RoweBots Supports various wireless modules. WITTENSTEIN Enhanced Security Module WITTENSTEIN high integrity systems For the highest security-critical environments, the Enhanced Security Module reinforces and strengthens the existing security of SAFERTOS. WITTENSTEIN OPENRTOS WITTENSTEIN high integrity systems OPENRTOS, The High Performance RTOS from WITTENSTEIN high integrity systems WITTENSTEIN SAFERTOS WITTENSTEIN high integrity systems SAFERTOS, The Safety Critical RTOS from WITTENSTEIN high integrity systems WITTENSTEIN SAFERTOS CORE WITTENSTEIN high integrity systems SAFERTOS CORE, The RTOS for embedded systems that need to consider safety, but do not require certification WITTENSTEIN Safety Plugins WITTENSTEIN high integrity systems Safety plugins are supplied with full source code and Design Assurance Pack designed to meet the requirements of IEC 61508 SIL3. 
X-CUBE-CLASSB ST Class B 60730-1 and 60335-1 Functional Safety Package with software expansion for STM32Cube X-CUBE-CRYPTOLIB ST STM32 cryptographic firmware library software expansion for STM32Cube (UM1924) X-CUBE-DBFU ST On-the-fly firmware update for dual bank STM32 microcontrollers (AN4767) X-CUBE-DSPDEMO ST Digital Signal Processing with STM32, software expansion for STM32Cube (AN4841) X-CUBE-IAP-USART ST STM32Cube in-application programming using the USART embedded software (AN4657) X-CUBE-LPTIMER ST Low-power timer (LPTIM) applicative use-cases on STM32 MCUs software expansion for STM32Cube (AN4865) X-CUBE-LPUART ST STM32Cube embedded software demo of power consumption using LPUART (AN4635) X-CUBE-NVMRWW ST Writing to NV memory without disrupting code execution on STM32L0 and STM32L1 microcontrollers (AN4808) X-CUBE-RC-CALIB ST STM32L0 and STM32L4 calibration software expansion for STM32Cube (AN4631 and AN4736) X-CUBE-REF-PM ST Reference power mode examples on STM32 MCUs software expansion for STM32Cube (AN4777) X-CUBE-RTC ST Real Time Clock (RTC) software expansion for STM32Cube (AN4759) 
X-CUBE-SBSFU ST Secure boot & secure firmware update software expansion for STM32Cube X-CUBE-SMBUS ST STM32Cube SMBus/PMBus embedded software (AN4502) 
X-CUBE-STL ST Functional safety package for STM32 microcontrollers in systems implementing safety functions up to IEC 61508 safety integrity level SIL2/SIL3 X-CUBE-TIM-32RES ST STM32Cube expansion software achieving 32-bit timer resolution by using the link system (AN2592) cURL wolfSSL cURL is a computer software project providing a library for transferring data using various protocols. 
embOS SEGGER Microcontroller embOS priority-controlled RTOS for embedded real time application from Segger 
embOS/IP SEGGER Microcontroller embOS/IP highly efficient IP stack from Segger wolfBoot wolfSSL wolfBoot is open source, commercial grade, embedded security software. wolfCrypt wolfSSL wolfCrypt is open source, commercial grade, FIPS-validated embedded security software. wolfMQTT wolfSSL wolfMQTT is open source, commercial grade, embedded security software. wolfSSH wolfSSL wolfSSH is open source, commercial grade, embedded security software. wolfSSL wolfSSL wolfSSL is open source, commercial grade, embedded security software. wolfSSL JNI and JSSE Provider wolfSSL wolfSSL is open source, commercial grade, embedded security software. wolfTPM wolfSSL wolfTPM is open source, commercial grade, embedded security software. Part NumberSet of embedded software components qualified for use in the most safety-critical applications in automotive, medical,railway, and industrial systems.
Cryptographic library
Embedded SSL/TLS library
Embedded TCP/IP stack (dual IPv4/IPv6)
The "Safety AddOns" provides pre-certified safety measures.
The "Flexible Safety RTOS" is a pre-certified real time kernel for use in safety critical systems with or without the need of formal approval through a product certification.
The FreeRTOS kernel is an open source real time operating system and the de-facto standard solution for microcontrollers and small microprocessors
An application program running on various communication modules that provide two-way data communication between upper-layer applications and devices.
HCC has developed optimized bootloaders for many years and has a range of high quality solutions that will fit almost any scenario.
Embedded Encryption Manager (EEM ) allows developers to secure embedded systems using multiple encryption or hash algorithms through a uniform interface.
HCC is renowned for its deep knowledge of flash storage media. In embedded systems, it is not possible to achieve the required efficiency, performance or reliability with a single file system.
All Flashs File Systems with fail-safe mechanisms for STM32, from HCC Embedded
IPSec/IKE provides a robust approach to security in embedded applications such as cars, "point-of-sale" terminals, medical devices, industrial equipment and many others.
HCC has developed an advanced, embedded IPv6 - Dual IPv4/v6 stack with no third party or open source content using a structured software development process.
MISRA Compliant TCP/IP is a highly efficient, embedded stack developed using a verifiable process and conforming strongly to MISRA coding standards.
MQTT is a small and efficient machine-to-machine protocol.
InterNiche Technologies has been a leader in embedded networking for more than 25 years. Now a part of HCC Embedded, Nichestack technology is a valuable resource for any embedded developer.
HCC has taken the radical approach of defining a system built around the needs of smart-meters. Metering applications usually have well-defined record structures and HCC has used its extensive flash experience to take advantage of this.
Verifiable TLS/SSL: a highly optimized software module designed to provide secure network communications for embedded devices.
USB Host & Device stacks for STM32, from HCC Embedded.
embOS software expansion for STM32Cube
UNISON software expansion for STM32Cube
NanoEdge AIâ„¢ by Cartesiam is the firstMachine Learning Software specifically developed to entirely run on microcontrollers.
A communication infrastructure that provides a secure instant communication between clients and devices connected through the Internet.
High security operating system for STM32 Arm Cortex-M microcontrollers.
Wireless M-Bus Protocol Stack, compliant to EN 13757-3/-4 and several other standards/specification based on it, such as OMSv3/v4, E/DSMR, CIG UNI/TS.
Audio Engine WMA Decoder and Utilities
STM32Cube MCU Package for STM32L0 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, File system, RTOS, Touch Sensing - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards)
Example Code snippets covering STM32 L0 serie
Sigfox IoT connectivity feed your innovation strategy and make the digital transformation of your business a reality. Sigfox IoT connectivity brings value in various business activities. With the continued miniaturization of sensors and technologic advancements such as energy harvesting, we will witness a continuous ow of data, merging the physical world to the digital world.
Sigfox Geolocation, the simplest and most efficient IoT location service. Sigfox Geolocation is a low-energy location service for all devices equipped with the simplest Sigfox module, without GPS. There is no need to retrofit to upgrade specific hardware, or to update software: Sigfox can now provide a location for all existing and future devices all over the world.
Embedded Software to create optimized GUIs.
Our IO-Link software stack (IDS-BSS-V11/20) opens sensor and actuator manufacturers a cost efficient and easy way to integrate state-of-the-art IO-Link technology into their products.
UNISON RTOS provides the possibility to work with the core serial busses.
UNISON FATFS and UNISON Power Safe FAT File System
UNISON Real Time Operating System Kernel
UNISON RTOS Security Protocols
Complete networking server with or without IPv6 and other network components.
UNISON USB Embedded Host Server, Embedded Device Server, OTG Server.
Supports various wireless modules.
For the highest security-critical environments, the Enhanced Security Module reinforces and strengthens the existing security of SAFERTOS.
OPENRTOS, The High Performance RTOS from WITTENSTEIN high integrity systems
SAFERTOS, The Safety Critical RTOS from WITTENSTEIN high integrity systems
SAFERTOS CORE, The RTOS for embedded systems that need to consider safety, but do not require certification
Safety plugins are supplied with full source code and Design Assurance Pack designed to meet the requirements of IEC 61508 SIL3.
Class B 60730-1 and 60335-1 Functional Safety Package with software expansion for STM32Cube
STM32 cryptographic firmware library software expansion for STM32Cube (UM1924)
On-the-fly firmware update for dual bank STM32 microcontrollers (AN4767)
Digital Signal Processing with STM32, software expansion for STM32Cube (AN4841)
STM32Cube in-application programming using the USART embedded software (AN4657)
Low-power timer (LPTIM) applicative use-cases on STM32 MCUs software expansion for STM32Cube (AN4865)
STM32Cube embedded software demo of power consumption using LPUART (AN4635)
Writing to NV memory without disrupting code execution on STM32L0 and STM32L1 microcontrollers (AN4808)
STM32L0 and STM32L4 calibration software expansion for STM32Cube (AN4631 and AN4736)
Reference power mode examples on STM32 MCUs software expansion for STM32Cube (AN4777)
Real Time Clock (RTC) software expansion for STM32Cube (AN4759)
Secure boot & secure firmware update software expansion for STM32Cube
STM32Cube SMBus/PMBus embedded software (AN4502)
Functional safety package for STM32 microcontrollers in systems implementing safety functions up to IEC 61508 safety integrity level SIL2/SIL3
STM32Cube expansion software achieving 32-bit timer resolution by using the link system (AN2592)
cURL is a computer software project providing a library for transferring data using various protocols.
embOS priority-controlled RTOS for embedded real time application from Segger
embOS/IP highly efficient IP stack from Segger
wolfBoot is open source, commercial grade, embedded security software.
wolfCrypt is open source, commercial grade, FIPS-validated embedded security software.
wolfMQTT is open source, commercial grade, embedded security software.
wolfSSH is open source, commercial grade, embedded security software.
wolfSSL is open source, commercial grade, embedded security software.
wolfSSL is open source, commercial grade, embedded security software.
wolfTPM is open source, commercial grade, embedded security software.
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Evaluation Tools
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Picture Part number Manufacturer Description 
32L0538DISCOVERY ST Discovery kit with STM32L053C8 MCU EasyMx PRO v7 for STM32 MikroElektronika Development board for STM32 ARM Cortex M0, M3, M4, and M7 mcus. Fusion for STM32 MikroElektronika World's first DEBUGGER over WIFI. MCU CARD for STM32 MikroElektronika Dozens of STM32 MCU CARDs for 8th generation of development boards such as Fusion for STM32, Fusion for ARM, mikromedia 7 and Clicker 4. 
NUCLEO-L011K4 ST STM32 Nucleo-32 development board with STM32L011K4 MCU, supports Arduino nano connectivity 
NUCLEO-L031K6 ST STM32 Nucleo-32 development board with STM32L031K6 MCU, supports Arduino nano connectivity 
NUCLEO-L053R8 ST STM32 Nucleo-64 development board with STM32L053R8 MCU, supports Arduino and ST morpho connectivity 
NUCLEO-L073RZ ST STM32 Nucleo-64 development board with STM32L073RZ MCU, supports Arduino and ST morpho connectivity 
P-NUCLEO-LRWAN2 ST STM32 Nucleo pack LoRaâ„¢ HF band sensor and gateway 
P-NUCLEO-LRWAN3 ST STM32 Nucleo pack LoRaâ„¢ LF band sensor and gateway 
STM32L073Z-EVAL ST Evaluation board with STM32L073VZ MCU Part NumberDiscovery kit with STM32L053C8 MCU
Development board for STM32 ARM Cortex M0, M3, M4, and M7 mcus.
World's first DEBUGGER over WIFI.
Dozens of STM32 MCU CARDs for 8th generation of development boards such as Fusion for STM32, Fusion for ARM, mikromedia 7 and Clicker 4.
STM32 Nucleo-32 development board with STM32L011K4 MCU, supports Arduino nano connectivity
STM32 Nucleo-32 development board with STM32L031K6 MCU, supports Arduino nano connectivity
STM32 Nucleo-64 development board with STM32L053R8 MCU, supports Arduino and ST morpho connectivity
STM32 Nucleo-64 development board with STM32L073RZ MCU, supports Arduino and ST morpho connectivity
STM32 Nucleo pack LoRaâ„¢ HF band sensor and gateway
STM32 Nucleo pack LoRaâ„¢ LF band sensor and gateway
Evaluation board with STM32L073VZ MCU
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Support and Applications
| Part Number | Marketing Status | Package | SMPS | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|---|
| STM32L051K8T6 | Active | LQFP 32 7x7x1.4 | - | Industrial | Ecopack2 | |
| STM32L051K8T6TR | Active | LQFP 32 7x7x1.4 | - | Industrial | Ecopack2 | |
| STM32L051K8T7 | Active | LQFP 32 7x7x1.4 | - | Industrial | Ecopack2 | |
| STM32L051K8U3 | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 | |
| STM32L051K8U3TR | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 | |
| STM32L051K8U6 | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 | |
| STM32L051K8U6DTR | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 | |
| STM32L051K8U6TR | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 | |
| STM32L051K8U7 | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 | |
| STM32L051K8U7TR | Active | UFQFPN 32 5x5x0.55 | - | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
