 Hello, and welcome to the STM32L5 training session. This session is organized to provide you with the most important information to ensure that you can develop your application as easily as possible. You will find a technical description of all the STM32L5 modules, including peripherals and development tools organized into specific sections. System, memory, security, analog, peripherals, watchdog and timers, and ecosystem. You can browse each section separately and learn about each module in the order of your choice and at your convenience. This section also allows you to search directly for a keyword and you will have direct access to the sections covering this information. Now, let's take a closer look at the STM32L5 new series of low-power microcontrollers. The STM32L5 microcontroller series provides a new optimal balance between performance, power and security. It harnesses the security features of the ARM Cortex M33 processor and its trust zone for ARM V8M combined with ST security implementation. The ST proprietary ultra-low-power technology creates a class-leading MCU for energy-conscious applications running on Internet of Things or IoT, medical, industrial and consumer devices. Offering up to 512 kilobytes of flash, dual-bank memory and 256 kilobytes of SRAM, this STM32L5 series reaches an upgraded level of performance for 42-core mark thanks to this new core operating at a frequency of up to 110 MHz and a new ST-ART accelerator, now also supporting external memory. Security has emerged as one of the three key areas that developers of embedded and IoT applications are thriving to improve. The STM32L5 series devices offer security foundation compliant with the trusted-based security architecture or 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 lifecycle is managed thanks to multiple levels of readout protection. Firmware hardware isolation is supported thanks to secureable peripherals, memories and IOs and also to the possibility to configure the peripherals and memories as privilege. The STM32L5 microprocessor offers a full set of security. It is based on a flexible hardware supporting software secure isolations with trust zone. It also provides enhanced security service such as dedicated secure user memory space for secure boot, symmetric and asymmetric crypto accelerations, memory and IP protection, independent readout protection between secure and non-secure domains, active IO tamper detection, certified cryptographic library, embedded secure firmware install loader and ecosystem, dedicated peripherals reinforcing security like a hash hardware accelerator and a true random number generator, and several protection mechanisms for embedded flash memory and SRAM. The STM32L5 series devices also offer active tamper detection and protection against transient and environmental perturbation attacks thanks to several internal monitorings which generate secret data erase in case of attack. The STM32L5 series achieves the best power consumption with a proven EEMBC ULP bench result of 370 ULP marks with the core profile benchmark. It integrates an optional SMPS step-down converter which can be enabled or disabled on the fly to optimize the energy. Its consumption numbers are 33 nanoamps in shutdown mode, 3.6 microamps in stop mode with full SRAM and peripheral states retention with 5 microseconds wake-up time, and down to 60 microamps per millihertz in active mode. The STM32L5 series is an ultra-low-power microcontroller family based on the high-performance ARM Cortex M33 32-bit risk core running at up to 110 megahertz and thus offering a performance increased by 20% versus the Cortex M4 core, achieving 165 DMIPS and 442 core mark scores. Its new ST-ART accelerator enabling faster flash accesses can work on both internal and external flash memories. These two key IPs enable a better responsiveness of any applications running on STM32L5 devices. Now let's get started with the training. Do not hesitate to follow the events and news about this product on our website at www.st.com slash stm32l5. Thank you.