The STM32L4A6RGT6: The ARM Cortex-M4 core runs at 80 MHz with 1 MB Flash and 320 KB RAM.
Peripheral set and I/O — what connects where
With 52 I/O lines and a rich peripheral list that includes CANbus, USB OTG, QSPI, SAI, and an LCD controller, this MCU can serve as the main application processor in an industrial gateway, a portable medical instrument, or a human-machine interface panel.
The 64-LQFP package is a common footprint, easy to source and solder in volume.
Low-power operation — what the 1.71 V floor enables
The STM32L4 series is built for battery-powered and energy-harvesting applications, with multiple stop and standby modes that cut current to microamps while keeping the RTC and a few wake-up sources alive. For a field-service swap, the wide supply tolerance means less worry about rail regulation on a worn board.