32 KB Flash, 170 MHz core — tight but fast
Program memory is 32 KB of Flash, with 32K x 8 bytes of SRAM — enough for a focused control loop or a communication stack, but you will budget the firmware image carefully if the application carries a GUI or a large bootloader-plus-application split.
Peripheral set for mixed-signal control
On-chip data converters include a 23-channel 12-bit ADC and four 12-bit DACs — useful for sensor acquisition and analog output loops without external converters. The peripheral list also includes brown-out detect, POR, PWM timers, a watchdog, and DMA, so the part can handle motor-control or power-conversion feedback loops with minimal CPU intervention.
Active lifecycle — no sourcing headache
The base product number STM32G431 covers a range of Flash and RAM density variants in the same 64-LQFP footprint, so a future density upgrade stays pin-compatible without a board spin.