The STMicroelectronics STM32L452xx devices are ultra-low-power microcontrollers based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz The Cortex-M4 core features a Floating point unit (FPU) single precision that supports all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security. The STM32L452xx devices embed high-speed memories (Flash memory up to 512 Kbyte, 160 Kbyte of SRAM), a Quad 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.

Ultra-low-power with FlexPowerControl
1.71 V to 3.6 V power supply
-40 °C to 85/125 °C temperature range
145 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
22 nA Shutdown mode (5 wakeup pins)
106 nA Standby mode (5 wakeup pins)
375 nA Standby mode with RTC
2.05 μA Stop 2 mode, 2.40 μA with RTC
84 μA/MHz run mode (LDO Mode)
36 μA/MHz run mode (@3.3 V SMPS Mode)
Batch acquisition mode (BAM)
4 μs wakeup from Stop mode
Brown out reset (BOR)
Interconnect matrix