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The STM32L552xx devices are an ultra-low-power microcontrollers family (STM32L5 Series) based on the high-performance Arm® Cortex®-M33 32-bit RISC core. They operate at a frequency of up to 110 MHz.
The Cortex®-M33 core features a single-precision floating-point unit (FPU), which supports all the Arm® single-precision data-processing instructions and all the data types. The Cortex®-M33 core also implements a full set of DSP (digital signal processing) instructions and a memory protection unit (MPU) which enhances the application’s security.
These devices embed high-speed memories (512 Kbytes of Flash memory and 256 Kbytes of SRAM), a flexible external memory controller (FSMC) for static memories (for devices with packages of 100 pins and more), an Octo-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 STM32L5 Series devices offer security foundation compliant with the trusted based security architecture (TBSA) requirements from Arm. They embed the necessary security features to implement a secure boot, secure data storage, secure firmware installation and secure firmware upgrade. Flexible life cycle is managed thanks to multiple levels of readout protection. Firmware hardware isolation is supported thanks to securable peripherals, memories and I/Os, and also to the possibility to configure the peripherals and memories as “privilege”.
The STM32L552xx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, secure and hidden protection areas.
The STM32L552xx devices embed peripherals reinforcing security:
- One HASH hardware accelerator
- One true random number generator
The STM32L5 Series devices offer active tamper detection and protection against transient and environmental perturbation attacks thanks to several internal monitoring which generate secret data erase in case of attack. This helps to fit the PCI requirements for point of sales applications. These devices offer two fast 12-bit ADC (5 Msps), two comparators, two operational amplifiers, two DAC channels, an internal voltage reference buffer, a low-power RTC, two general-purpose 32-bit timer, two 16-bit PWM timers dedicated to motor control, seven general-purpose 16-bit timers, and two 16-bit low-power timers. The devices support four digital filters for external sigma delta modulators (DFSDM). In addition, up to 22 capacitive sensing channels are available.
STM32L5 Series also feature standard and advanced communication interfaces such as:
- Four I2Cs
- Three SPIs
- Three USARTs, two UARTs and one low-power UART
- Two SAIs
- One SDMMC
- One FDCAN
- USB device FS
- USB Type-C / USB power delivery controller
The devices operate in the -40 to +85 °C (+105 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.
Some independent power supplies are supported like an analog independent supply input for ADC, DAC, OPAMPs and comparators, a 3.3 V dedicated supply input for USB and up to 14 I/Os, which can be supplied independently down to 1.08 V. A VBAT input allows to backup the RTC and backup the registers.
The STM32L552xx devices offer seven packages from 48-pin to 144-pin.Key Features
- Ultra-low-power with FlexPowerControl
- 1.71 V to 3.6 V power supply
- -40 °C to 85/125 °C temperature range
- Batch acquisition mode (BAM)
- 187 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
- 17 nA Shutdown mode (5 wakeup pins)
- 108 nA Standby mode (5 wakeup pins)
- 222 nA Standby mode with RTC
- 3.16 μA Stop 2 with RTC
- 106 μA/MHz Run mode (LDO mode)
- 62 μA/MHz Run mode @ 3 V (SMPS step-down converter mode)
- 5 µs wakeup from Stop mode
- Brownout reset (BOR) in all modes except Shutdown
- Core
- Arm® 32-bit Cortex®-M33 CPU with TrustZone® and FPU
- ART Accelerator
- 8-Kbyte instruction cache allowing 0-wait-state execution from Flash memory and external memories; frequency up to 110 MHz, MPU, 165 DMIPS and DSP instructions
- Performance benckmark
- 1.5 DMIPS/MHz (Drystone 2.1)
- 442 CoreMark® (4.02 CoreMark®/MHz)
- Energy benchmark
- 370 ULPMark-CP® score
- 54 ULPMark-PP® score
- 27400 SecureMark-TLS® score
- Memories
- Up to 512-Kbyte Flash, two banks read-while-write
- 256 Kbytes of SRAM including 64 Kbytes with hardware parity check
- External memory interface supporting SRAM, PSRAM, NOR, NAND and FRAM memories
- OCTOSPI memory interface
- Security
- Arm® TrustZone® and securable I/Os, memories and peripherals
- Flexible life cycle scheme with RDP (readout protection)
- Root of trust thanks to unique boot entry and hide protection area (HDP)
- SFI (secure firmware installation) thanks to embedded RSS (root secure services)
- Secure firmware upgrade support with TF-M
- HASH hardware accelerator
- Active tamper and protection against temperature, voltage and frequency attacks
- True random number generator NIST SP800-90B compliant
- 96-bit unique ID
- 512-byte OTP (one-time programmable) for user data
- General-purpose input/outputs
- Up to 114 fast I/Os with interrupt capability most 5 V-tolerant and up to 14 I/Os with independent supply down to 1.08 V
- Power management
- Embedded regulator (LDO) with three configurable range output to supply the digital circuitry
- Embedded SMPS step-down converter
- External SMPS support
- Clock management
- 4 to 48 MHz crystal oscillator
- 32 kHz crystal oscillator for RTC (LSE)
- Internal 16 MHz factory-trimmed RC (±1%)
- Internal low-power 32 kHz RC (±5%)
- Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25% accuracy)
- Internal 48 MHz with clock recovery
- 3 PLLs for system clock, USB, audio, ADC
- Up to 16 timers and 2 watchdogs
- 16x timers: 2 x 16-bit advanced motor-control, 2 x 32-bit and 5 x 16-bit general purpose, 2x 16-bit basic, 3x low-power 16-bit timers (available in Stop mode), 2x watchdogs, 2x SysTick timer
- RTC with hardware calendar, alarms and calibration
- Up to 19 communication peripherals
- 1x USB Type-C™/ USB power delivery controller
- 1x USB 2.0 full-speed crystal less solution, LPM and BCD
- 2x SAIs (serial audio interface)
- 4x I2C FM+(1 Mbit/s), SMBus/PMBus™
- 6x USARTs (ISO 7816, LIN, IrDA, modem)
- 3x SPIs (7x SPIs with USART and OCTOSPI in SPI mode)
- 1x FDCAN controller
- 1x SDMMC interface
- 2 DMA controllers
- 14 DMA channels
- Up to 22 capacitive sensing channels
- Support touch key, linear and rotary touch sensors
- Rich analog peripherals (independent supply)
- 2x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 µA/Msps
- 2x 12-bit DAC outputs, low-power sample and hold
- 2x operational amplifiers with built-in PGA
- 2x ultra-low-power comparators
- 4x digital filters for sigma delta modulator
- CRC calculation unit
- Debug
- Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™ (ETM)
- Ultra-low-power with FlexPowerControl
Circuit Diagram
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 Lauterbach µTrace Lauterbach All-in-one debug and trace solution for Cortex-M. ARM Lauterbach Combiprobe II Lauterbach Debugging of multicore microcontrollers consisting of Cortex-M cores and cores from other architecture. 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 NumberAll-in-one debug and trace solution for Cortex-M.
Debugging of multicore microcontrollers consisting of Cortex-M cores and cores from other architecture.
High-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 Lauterbach Front-End debugger Lauterbach TRACE32 can be used as debug front-end for various virtual targets, core simulators, target servers such as GDB. ARM Lauterbach Instruction Set Simulator Lauterbach The TRACE32 Instruction Set Simulator is available for nearly all processor architectures supported by TRACE32. An intensive use of this tool requires a TRACE32 Simulator License. ARM Lauterbach PowerView debugger Lauterbach PowerView provides an integrated debug environment and a universal interface for the entire tool family. 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-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 VisualGDB Sysprogs Seamlessly integrates support for STM32 devices into Visual Studio winIDEA-STM32 iSYSTEM iSYSTEM's complete software development and test solution for the STM32 MCUs Part NumberTRACE32 can be used as debug front-end for various virtual targets, core simulators, target servers such as GDB.
The TRACE32 Instruction Set Simulator is available for nearly all processor architectures supported by TRACE32. An intensive use of this tool requires a TRACE32 Simulator License.
PowerView provides an integrated debug environment and a universal interface for the entire tool family.
Complete 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
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
Seamlessly integrates support for STM32 devices into Visual Studio
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 EcoXiP Octal NOR Flash Adesto Low power, high performance Octal xSPI NOR flash non-volatile memory. 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. Serial NOR Flash, SLC NAND Flash, eMMC Macronix Macronix delivers high quality, innovative and performance driven range of Non-Volatile products such as NOR Flash SLC NAND Flash and eMMC, ideal for diverse applications from computing, consumer, networking to industrial, automotive, and Internet of Things. A wide product offering suitable for Data and Code storage, Execution-in-Place and Energy-efficient applications Part NumberLow power, high performance Octal xSPI NOR flash non-volatile memory.
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.
Macronix delivers high quality, innovative and performance driven range of Non-Volatile products such as NOR Flash SLC NAND Flash and eMMC, ideal for diverse applications from computing, consumer, networking to industrial, automotive, and Internet of Things. A wide product offering suitable for Data and Code storage, Execution-in-Place and Energy-efficient applications
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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. CANopen emotas CANopen Master/Slave stack with communication services 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 J1939 emotas SAE J1939 protocol stack 
Nanoedge AI™ Cartesiam NanoEdge AI™ 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. STM32-WMA/DEC ST Audio Engine WMA Decoder and Utilities 
STM32CubeL5 ST STM32Cube MCU Package for STM32L5 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, File system, RTOS, TF-M - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards) 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-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-RTC ST Real Time Clock (RTC) software expansion for STM32Cube (AN4759) 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 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.
CANopen Master/Slave stack with communication services
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
SAE J1939 protocol stack
NanoEdge AI™ 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.
Audio Engine WMA Decoder and Utilities
STM32Cube MCU Package for STM32L5 series (HAL, Low-Layer APIs and CMSIS (CORE, DSP, RTOS), USB, File system, RTOS, TF-M - coming with examples running on ST boards: STM32 Nucleo, Discovery kits and Evaluation boards)
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
Digital Signal Processing with STM32, software expansion for STM32Cube (AN4841)
STM32Cube in-application programming using the USART embedded software (AN4657)
Real Time Clock (RTC) software expansion for STM32Cube (AN4759)
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
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 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-L552ZE-Q ST STM32 Nucleo-144 development board with STM32L552ZE MCU, SMPS, supports Arduino, ST Zio and morpho connectivity 
STM32L552E-EV ST Evaluation board with STM32L552ZE MCU 
STM32L562E-DK ST Discovery kit with STM32L562QE MCU Part NumberDevelopment 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-144 development board with STM32L552ZE MCU, SMPS, supports Arduino, ST Zio and morpho connectivity
Evaluation board with STM32L552ZE MCU
Discovery kit with STM32L562QE MCU
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Support and Applications
Quality and Reliability
| Part Number | Marketing Status | Package | SMPS | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|---|
| STM32L552CCT6 | Active | LQFP 48 7x7x1.4 | - | Industrial | Ecopack2 | |
| STM32L552CCU6 | Active | UFQFPN 48 7x7x0.55 | - | Industrial | Ecopack2 | |
STM32L552CCT6
Package:
LQFP 48 7x7x1.4Material Declaration**:
STM32L552CCU6
Package:
UFQFPN 48 7x7x0.55Material Declaration**:
(**) 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.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | 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 | Budgetary Price (US$)*/Qty | More info | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||||||||||||||||
| STM32L552CCT6 | 1 distributors | Buy now | LQFP 48 7x7x1.4 | Tray | Active | 3A991A2 | CHINA | -40 | 85 | 9 | 2 | 2 | - | - | 2 | 2 | 38 | - | 1 | 3 | - | 3 | 1 | 2 | - | 2.7785 / 10k | MORE INFO Timers (typ) (16-bit): 9 Timers (typ) (32-bit): 2 Number of A/D Converters (typ): 2 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): 38 CAN (typ): - CAN FD (typ): 1 SPI (typ): 3 I2S (typ): - USART (typ): 3 UART (typ): 1 Integrated op-amps: 2 SMPS: - | |
| STM32L552CCU6 | 1 distributors | Buy now | UFQFPN 48 7x7x0.55 | Tray | Active | 3A991A2 | CHINA | -40 | 85 | 9 | 2 | 2 | - | - | 2 | 2 | 38 | - | 1 | 3 | - | 3 | 1 | 2 | - | 2.7146 / 10k | MORE INFO Timers (typ) (16-bit): 9 Timers (typ) (32-bit): 2 Number of A/D Converters (typ): 2 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): 38 CAN (typ): - CAN FD (typ): 1 SPI (typ): 3 I2S (typ): - USART (typ): 3 UART (typ): 1 Integrated op-amps: 2 SMPS: - | |
(*) 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
