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The ultra-low-power STM32L151x6/8/B-A and STM32L152x6/8/B-A devices incorporate the connectivity power of the universal serial bus (USB) with the high-performance ARM® Cortex®-M3 32-bit RISC core operating at a frequency of 32 MHz (33.3 DMIPS), a memory protection unit (MPU), high-speed embedded memories (Flash memory up to 128 Kbytes and RAM up to 32 Kbytes) and an extensive range of enhanced I/Os and peripherals connected to two APB buses.
All the devices offer a 12-bit ADC, 2 DACs and 2 ultra-low-power comparators, six general-purpose 16-bit timers and two basic timers, which can be used as time bases.
Moreover, the STM32L151x6/8/B-A and STM32L152x6/8/B-A devices contain standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs and a USB. The STM32L151x6/8/B-A and STM32L152x6/8/B-A devices offer up to 20 capacitive sensing channels to simply add touch sensing functionality to any application.
They also include a real-time clock with sub-second counting and a set of backup registers that remain powered in Standby mode.
Finally, the integrated LCD controller (except STM32L151x6/8/B-A devices) has a built-in LCD voltage generator that allows to drive up to 8 multiplexed LCDs with contrast independent of the supply voltage.
The ultra-low-power STM32L151x6/8/B-A and STM32L152x6/8/B-A 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 +85 °C and -40 to +105°C temperature ranges. 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 °C to 105 °C temperature range
- -40°C to 105°C temperature range
- 0.28 µA Standby mode (3 wakeup pins)
- 1.11 µA Standby mode + RTC
- 0.44 µA Stop mode (16 wakeup lines)
- 1.38 µA Stop mode + RTC
- 10.9 µA Low-power Run mode
- 185 µA/MHz Run mode
- 10 nA ultra-low I/O leakage
- 8 µs wakeup time
- Core: ARM® Cortex®-M3 32-bit CPU
- From 32 kHz up to 32 MHz max
- 1.25 DMIPS/MHz (Dhrystone 2.1)
- Memory protection unit
- 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 24 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
- PLL for CPU clock and USB (48 MHz)
- Pre-programmed bootloader
- USART supported
- Development support
- Serial wire debug supported
- JTAG and trace supported
- Up to 83 fast I/Os (73 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
- Memories
- Up to 128 Kbytes Flash memory with ECC
- Up to 32 Kbytes RAM
- Up to 4 Kbytes of true EEPROM with ECC
- 80-byte backup register
- LCD Driver (except STM32L151x6/8/B-A devices) for up to 8x40 segments
- Support contrast adjustment
- Support blinking mode
- Step-up converter on board
- Rich analog peripherals (down to 1.8 V)
- 12-bit ADC 1 Msps up to 24 channels
- 12-bit DAC 2 channels with output buffers
- 2x ultra-low-power-comparators(window mode and wake up capability)
- DMA controller 7x channels
- 8x peripheral communication interfaces
- 1x USB 2.0 (internal 48 MHz PLL)
- 3x USART (ISO 7816, IrDA)
- 2x SPI 16 Mbits/s
- 2x I2C (SMBus/PMBus)
- 10x timers: 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)
- Up to 20 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
- CRC calculation unit, 96-bit unique ID
- 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 | ||||||||||||||||||||||||||
| STM32L151CBT6ATR | LQFP 48 7x7x1.4 | Tape And Reel | Active | 3A991A2 | CHINA | -40 | 85 | 8 | - | - | - | - | 2 | 2 | 37 | - | - | 2 | - | 3 | - | - | - | MORE INFO Timers (typ) (16 bit): 8 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): 2 Comparator: 2 I/Os (High Current): 37 CAN (typ): - CAN FD (typ): - SPI (typ): 2 I2S (typ): - USART (typ): 3 UART (typ): - Integrated op-amps: - SMPS: - | 1.8356 / 10k | Buy now | Check Availability |
| STM32L151CBT6A | LQFP 48 7x7x1.4 | Tray | Active | 3A991A2 | CHINA | -40 | 85 | 8 | - | - | - | - | 2 | 2 | 37 | - | - | 2 | - | 3 | - | - | - | MORE INFO Timers (typ) (16 bit): 8 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): 2 Comparator: 2 I/Os (High Current): 37 CAN (typ): - CAN FD (typ): - SPI (typ): 2 I2S (typ): - USART (typ): 3 UART (typ): - Integrated op-amps: - SMPS: - | 1.8356 / 10k | Buy now | Check Availability |
| STM32L151CBU6A | UFQFPN 48 7x7x0.55 | Tray | Active | 3A991A2 | CHINA | -40 | 85 | 8 | - | - | - | - | 2 | 2 | 37 | - | - | 2 | - | 3 | - | - | - | MORE INFO Timers (typ) (16 bit): 8 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): 2 Comparator: 2 I/Os (High Current): 37 CAN (typ): - CAN FD (typ): - SPI (typ): 2 I2S (typ): - USART (typ): 3 UART (typ): - Integrated op-amps: - SMPS: - | 1.8356 / 10k | Buy now | Check Availability |
(*) 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
As part of our embedded online event, we had the pleasure of filming with Reinhard Keil, a Senior Director of Embedded Tools at ARM.
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.
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 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-STM32002 ST Clock configuration tool for STM32L1xx microcontrollers (AN3309) 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
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
Clock configuration tool for STM32L1xx microcontrollers (AN3309)
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 RF Modules DiZiC RF modules for Sub GigaHz and Bluetooth. SIGFOX-MOD1-C XoverIoT The SIGFOX-MOD1 is a ultra-low-power module designed especially for sensor node applications mounted with chip antenna. SIGFOX-MOD1-E XoverIoT The SIGFOX-MOD1-E is an ultra-low-power module designed especially for sensor node applications. Same features as the SIGFOX-MOD1-C but with an U.FL connector for usage of external antennas. 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 NumberRF modules for Sub GigaHz and Bluetooth.
The SIGFOX-MOD1 is a ultra-low-power module designed especially for sensor node applications mounted with chip antenna.
The SIGFOX-MOD1-E is an ultra-low-power module designed especially for sensor node applications. Same features as the SIGFOX-MOD1-C but with an U.FL connector for usage of external antennas.
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 STSW-DALI002 ST STM32L1 DALI slave library Part NumberSTM32L1 DALI slave library
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Picture Part number Manufacturer Description 32L1-TOUCH-LIB ST STM32L1 STMTouch touch-sensing library CycloneCrypto Oryx Embedded Cryptographic library CycloneSSL Oryx Embedded Embedded SSL/TLS library CycloneTCP Oryx Embedded Embedded TCP/IP stack (dual IPv4/IPv6) Flexible Safety RTOS Embedded Office The "Flexible Safety RTOS" is a pre-certified real time kernel. 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 AI™ Cartesiam NanoEdge AI™ by Cartesiam is the firstMachine Learning Software specifically developed to entirely run on microcontrollers. OPENRTOS WITTENSTEIN high integrity systems OPENRTOS, The High Performance RTOS from WITTENSTEIN high integrity systems Port CANOpen port industrial automation The CANopen stack is supported by a powerful Design Tool, creating and maintaining the complex and powerful object dictionary. 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. SAFERTOS WITTENSTEIN high integrity systems SAFERTOS, The Safety Critical RTOS from WITTENSTEIN high integrity systems SAFERTOS CORE WITTENSTEIN high integrity systems SAFERTOS CORE, The RTOS for embedded systems that need to consider safety, but do not require certification STM32-CLASSB-SPL ST Functional safety package based on Standard Peripheral libraries to achieve IEC 60730 Class B certification with the STM32 STM32-CRYP-LIB ST STM32 cryptographic library (UM0586) STM32-WMA/DEC ST Audio Engine WMA Decoder and Utilities 
STM32CubeL1 ST STM32Cube MCU Package for STM32 L1 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, File system, RTOS, Touch Sensing, Graphic - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards) STSW-STM32007 ST Using the STM32F1x and STM32L1x DMA controller (AN2548) STSW-STM32011 ST Smartcard interface with the STM32F10x and STM32L1xx microcontrollers (AN2598) STSW-STM32013 ST STM32F10xxx LCD glass driver firmware (AN2656) STSW-STM32014 ST Improving STM32F1x and STM32L1x ADC resolution by oversampling (AN2668) STSW-STM32022 ST The ADPCM algorithm in STM32F1xx and STM32L1xx microcontrollers STSW-STM32025 ST Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32 USART STSW-STM32028 ST STM32's ADC modes and their applications (AN3116) STSW-STM32047 ST Implementing receivers for infrared remote control protocols using STM32F1 microcontrollers (AN3174) STSW-STM32072 ST STM32L1 Discovery firmware package (RN0079) STSW-STM32075 ST STM32L1xx in-application programming (IAP) using the USART (AN3310) STSW-STM32076 ST STM32L1xx internal RC oscillators calibration (AN3300) 
STSW-STM32077 ST STM32L1xx standard peripherals library STSW-STM32094 ST STM32 in-application programming over the I2C bus (AN3078) 
STSW-STM32121 ST STM32F10x, STM32L1xx and STM32F3xx USB full speed device library (UM0424) 
STSW-STM32127 ST STM32F10xx, STM32F2xx, STM32F4xx and STM32L1xx I2C Communication peripheral application library (CPAL) (UM1029) STSW-STM32135 -- Playing audio file interfacing STM32L1xx microcontroller with an external I2S audio codec (AN4309) STSW-STM32149 ST STM32 nRF51 Bluetooth Low Energy (BLE) embedded software STSW-STM32AN4187 ST Using CRC peripheral in STM32 family (AN4187) 
STemWin ST Professional graphical stack library enabling the building up of Graphical User Interfaces (GUIs) (AN4323) Storyboard Engine Crank Software Embedded Software to create optimized GUIs. 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. 
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-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-NVMRWW ST Writing to NV memory without disrupting code execution on STM32L0 and STM32L1 microcontrollers (AN4808) 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 to achieve IEC 61508 Safety Integrity Level (SIL2/3) certification with STM32 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 NumberSTM32L1 STMTouch touch-sensing library
Cryptographic library
Embedded SSL/TLS library
Embedded TCP/IP stack (dual IPv4/IPv6)
The "Flexible Safety RTOS" is a pre-certified real time kernel.
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 AI™ by Cartesiam is the firstMachine Learning Software specifically developed to entirely run on microcontrollers.
OPENRTOS, The High Performance RTOS from WITTENSTEIN high integrity systems
The CANopen stack is supported by a powerful Design Tool, creating and maintaining the complex and powerful object dictionary.
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.
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
Functional safety package based on Standard Peripheral libraries to achieve IEC 60730 Class B certification with the STM32
STM32 cryptographic library (UM0586)
Audio Engine WMA Decoder and Utilities
STM32Cube MCU Package for STM32 L1 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, File system, RTOS, Touch Sensing, Graphic - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards)
Using the STM32F1x and STM32L1x DMA controller (AN2548)
Smartcard interface with the STM32F10x and STM32L1xx microcontrollers (AN2598)
STM32F10xxx LCD glass driver firmware (AN2656)
Improving STM32F1x and STM32L1x ADC resolution by oversampling (AN2668)
The ADPCM algorithm in STM32F1xx and STM32L1xx microcontrollers
Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32 USART
STM32's ADC modes and their applications (AN3116)
Implementing receivers for infrared remote control protocols using STM32F1 microcontrollers (AN3174)
STM32L1 Discovery firmware package (RN0079)
STM32L1xx in-application programming (IAP) using the USART (AN3310)
STM32L1xx internal RC oscillators calibration (AN3300)
STM32L1xx standard peripherals library
STM32 in-application programming over the I2C bus (AN3078)
STM32F10x, STM32L1xx and STM32F3xx USB full speed device library (UM0424)
STM32F10xx, STM32F2xx, STM32F4xx and STM32L1xx I2C Communication peripheral application library (CPAL) (UM1029)
Playing audio file interfacing STM32L1xx microcontroller with an external I2S audio codec (AN4309)
STM32 nRF51 Bluetooth Low Energy (BLE) embedded software
Using CRC peripheral in STM32 family (AN4187)
Professional graphical stack library enabling the building up of Graphical User Interfaces (GUIs) (AN4323)
Embedded Software to create optimized GUIs.
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.
Class B 60730-1 and 60335-1 Functional Safety Package with software expansion for STM32Cube
STM32 cryptographic firmware library software expansion for STM32Cube (UM1924)
Digital Signal Processing with STM32, software expansion for STM32Cube (AN4841)
STM32Cube in-application programming using the USART embedded software (AN4657)
Writing to NV memory without disrupting code execution on STM32L0 and STM32L1 microcontrollers (AN4808)
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 to achieve IEC 61508 Safety Integrity Level (SIL2/3) certification with STM32
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 
32L152CDISCOVERY ST Discovery kit with STM32L152RC MCU EasyMx PRO v7 for STM32 MikroElektronika Development board for STM32 ARM Cortex M0, M3, M4, and M7 mcus. Fusion for STM32 -- World?s first DEBUGGER over WIFI. 
NUCLEO-L152RE ST STM32 Nucleo-64 development board with STM32L152RE MCU, supports Arduino and ST morpho connectivity Part NumberDiscovery kit with STM32L152RC MCU
Development board for STM32 ARM Cortex M0, M3, M4, and M7 mcus.
World?s first DEBUGGER over WIFI.
STM32 Nucleo-64 development board with STM32L152RE MCU, supports Arduino and ST morpho connectivity
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Support and Applications
| Part Number | Marketing Status | Package | SMPS | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|---|
| STM32L151CBT6A | Active | LQFP 48 7x7x1.4 | - | Industrial | Ecopack2 | |
| STM32L151CBT6ATR | Active | LQFP 48 7x7x1.4 | - | Industrial | Ecopack2 | |
| STM32L151CBU6A | Active | UFQFPN 48 7x7x0.55 | - | 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.
