170 MHz Cortex-M4F with HRTIM — the real-time control MCU
It is part of the STM32G4 series, purpose-built for digital power conversion, motor control, and industrial automation where the combination of a floating-point unit and high-resolution timers (HRTIM) matters more than raw memory density. The 100-LQFP package (14x14 mm) gives 86 usable I/O, enough to handle multiple encoder inputs, PWM phases, and sensor interfaces without a port expander.
42 ADC channels and 7 DACs — analog density for multi-loop systems
A 42-channel 12-bit ADC and a 7-channel 12-bit DAC sit on-chip, giving this part an unusually dense analog front-end for a mid-range MCU. In a three-phase motor drive, that means one chip can sample all phase currents, DC-link voltage, and temperature while the DACs output reference levels or analog telemetry — no external mux or extra DAC IC. The 12-bit resolution is adequate for current-sense feedback in most industrial servo loops; if you need 16-bit, you step up to the G474's higher-density siblings or add an external ADC.