The STM32L475VET6: The 80 MHz core speed, combined with the ARM Cortex-M4 DSP extensions and single-cycle multiply-accumulate, gives this part enough headroom for sensor fusion, motor field-oriented control loops, and audio processing without needing an external DSP. The 128 KB SRAM supports moderate-size data buffers and RTOS task stacks; if your application needs larger frame buffers or a GUI framebuffer, budget for external memory via the Quad-SPI or FMC interfaces.
Memory and storage: 512 KB Flash, 128 KB SRAM
The Flash is sufficient for a full-featured firmware stack including a real-time OS, USB stack, and application code. The 128 KB SRAM is shared between data and stack; if your design uses a camera sensor or large lookup tables, the Quad-SPI interface can map external PSRAM or Flash into the memory map without bit-banging.
Connectivity and peripherals: CAN, USB OTG, and more
The STM32L475VET6 includes a CANbus controller for industrial networking, USB OTG for host/device connectivity, and Quad-SPI for high-speed external memory.
Package and footprint: 100-LQFP (14x14 mm)
Housed in a 100-pin LQFP package with a 14x14 mm body and 0.5 mm pitch, this part is hand-solderable and inspectable, which simplifies prototyping and rework.