2 men on a boat on the sea

The STM32U535 and STM32U545 microcontrollers extend the STM32 ultra-low-power portfolio.

    They offer enhanced performance thanks to:
  • an Arm® Cortex®-M33 processor core running at 160 MHz with TrustZone® for Armv8-M
  • digital signal processing (DSP)
  • a floating-point unit (FPU)

The STM32U535 line offers from 128 to 512 Kbytes of flash memory and from 48- to 100-pin packages.

The STM32U545 is available with 512 Kbytes of flash memory and provides an additional encryption accelerator engine (AES, PKA, and OTFDEC).

All the packages are available with or without an embedded SMPS (DC/DC buck voltage regulator).

2 men on a boat on the sea


  • Advanced HMI
  • Point of sales (POS)
  • Gateways
  • Home appliances
  • White goods
  • Smart thermostats
  • Small electrics vehicles
  • Wearables
  • Smart speakers
  • E-bikes

Discover our portfolio


  • Most cost-effective STM32U5 lines
  • Power efficiency: ultra-low power platform lowers energy consumption. STM32U5 efficiency is among the best in the industry (benchmarks available in the product presentation)
  • Room for future product upgrades: packages are 100% pin-to-pin compatible within the family