The STM32L452VE is an ultra-low-power microcontroller based on the high-performance ARM Cortex-M4 32-bit RISC core operating at a frequency of up to 80 MHz, with hardware single-precision FPU and DSP instructions support. Internal memories are 512KB Flash and 160KB SRAM. 

Specifications and manuals available from:

https://www.st.com/en/microcontrollers-microprocessors/stm32l452ve.html