Mouser Electronics is now stocking STM32L5 low-power microcontrollers from STMicroelectronics. The device is based on a Cortex-M33 core with Trustzone hardware-based security.

Their security architecture features the Arm v8-M main extension.

The M33 core with floating point unit also implements a full set of DSP (digital signal processing) instructions and a memory protection unit (MPU) that enhances application security. Additionally, the STM32L5 family has received PSA level 1 and level 2 certifications from Arm.

The STM32L5 devices embed memories (up to 512Kb of flash memory and 256Kb of SRAM), plus a flexible external memory controller for static memories (for devices with packages of 100 pins and more).

Other peripherals include an octo-SPI flash memories interface and a range of I/Os and peripherals connected to two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix.

The devices also incorporate ST’s Art Accelerator, which the company claims allows zero-wait states out of the 64-bit program flash at a clock speed of up to 110 MHz and 165 DMIPS performance.

The STM32L5 microcontrollers use low-power technologies, aiming to give designers flexibility with regards to power consumption.

Technologies such as voltage scaling are included to balance power consumption with processing demand, and power-saving modes (including a run mode down to 62µA/MHz and 108nA standby mode) allow engineers to design lower power applications.