170 MHz Cortex-M4F with math accelerator — what it means for control loops
The STM32G474RET6U: This core is tuned for real-time digital power conversion and motor control, where the 170 MHz clock keeps the control loop update rate high enough for switching frequencies above 100 kHz without cycle-stealing from the main application.
Analog front end — 26 ADC channels and 7 DAC outputs
With 26 multiplexed 12-bit ADC channels and seven 12-bit DAC outputs, this MCU can simultaneously sample multiple current-sense resistors and voltage dividers in a three-phase motor drive or a multi-output PFC stage. The DACs are useful for generating analog reference levels or for injecting offset cancellation signals without external op-amp circuitry.
Package and supply — 64-LQFP with wide voltage range
Housed in a 64-LQFP (10x10 mm) surface-mount package with 52 accessible I/O pins, the STM32G474RET6U fits on a two-layer PCB with reasonable routing density.
Production status and sourcing
The base product number STM32G474 covers a range of Flash and package options, so a pin-compatible density upgrade (e.g., the STM32G474RET6 with 512 KB Flash in the same footprint) is a straightforward second-source path within the family.