Device overview and key features
The STMicroelectronics STM32L475RGT7 is a 32-bit single-core ARM Cortex-M4 microcontroller from the STM32L4 ultra-low-power series.
Brown-out detect and reset are built in, so an external supervisor is optional in many designs.
The STM32L476RGT7 is a pin-compatible sibling within the same STM32L4 family — the primary difference being the L476's additional Chrom-ART graphics accelerator and larger SRAM option, which may affect code portability if those features are used.