STM32U545RE Datasheet PDF - STMicroelectronics

Description
   The STM32U545xx devices belong to an ultra-low-power microcontrollers family (STM32U5 Series) based on the high-performance Arm® Cortex®-M33 32-bit RISC core. They operate at a frequency of up to 160 MHz.
   The Cortex®-M33 core features a single-precision FPU (floating-point unit), that 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 MPU (memory protection unit) that enhances the application security.
   The devices embed high-speed memories (512-Kbyte flash memory and 274-Kbyte SRAM), one Octo-SPI flash memory interface, an extensive range of enhanced I/Os, peripherals connected to three APB buses, three AHB buses and a 32-bit multi-AHB bus matrix.

FEATUREs
Includes ST state-of-the-art patented technology
Ultra-low-power with FlexPowerControl
• 1.71 V to 3.6 V power supply
• –40 °C to +85/125 °C temperature range
• Low-power background-autonomous mode
   (LPBAM): autonomous peripherals with DMA,
   functional down to Stop 2 mode
• VBAT mode: supply for RTC, 32 x 32-bit backup
   registers and 2-Kbyte backup SRAM
• 90 nA Shutdown mode (23 wake-up pins)
• 200 nA Standby mode (23 wake-up pins)
• 370 nA Standby mode with RTC
• 1.4 μA Stop 3 mode with 16-Kbyte SRAM
• 2.2 µA Stop 3 mode with full SRAM
• 3.0 µA Stop 2 mode with 16-Kbyte SRAM
• 4.6 µA Stop 2 mode with full SRAM
• 16.3 μA/MHz Run mode @ 3.3 V

Core
• Arm® 32-bit Cortex®-M33 CPU with
   TrustZone®, MPU, DSP, and FPU

ART Accelerator
• 8-Kbyte instruction cache allowing 0-wait-state
   execution from flash and external memories:
   up to 160 MHz, 240 DMIPS
• 4-Kbyte data cache for external memories
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