The STM32L471VET6: It targets industrial sensor nodes, building automation controllers, and battery-powered instrumentation where the balance of processing throughput and energy efficiency matters.
82 I/O and peripheral set — sizing the interface budget
With 82 I/O lines in a 100-LQFP package, this part gives you enough GPIO for parallel LCD interfaces, keypad matrices, or multiple encoder inputs without needing an I/O expander. The connectivity block includes CANbus, two I²C, SPI, QSPI, SAI (for audio), and SWPMI (single-wire protocol for smartcard or NFC). The QSPI interface is particularly useful for memory-mapped external Flash or PSRAM, stretching the effective storage without loading the core bus.