The STM32L4R5VGT6: ARM Cortex-M4 at 120 MHz with 1 MB Flash and 640K x 8 RAM.
83 I/O and connectivity — what the peripherals unlock
With 83 I/O lines in a 100-LQFP package (14x14 mm), this MCU gives you enough pins to drive a parallel RGB display, a camera sensor, or a bank of external memory via the EBI/EMI interface. The connectivity list includes CANbus, USB OTG, multiple SPI and I²C channels, SAI for audio, and an SDIO interface for external storage.
ST lists the STM32L4R5VGT6 as Active (current product status). For a procurement planner, this means the part is still a safe selection for a new BOM line — you are not chasing a disappearing allocation. The base product number STM32L4R5 covers a density range, so if your firmware outgrows 1 MB Flash later, the pin-compatible STM32L4R5xI variants (with 2 MB Flash) are a drop-in swap without a PCB spin.
Package and supply — board-level fit
The 100-LQFP (14x14 mm) is a hand-solderable, inspectable package. The 1.71 V minimum supply allows operation from a single alkaline cell.