170 MHz Cortex-M4F with FPU — why this MCU fits mixed-signal control
The STM32G474CET3 is an STMicroelectronics 32-bit MCU built around an ARM Cortex-M4F core running at 170 MHz, with a single-precision FPU for real-time math in motor control or digital power loops. The 48-LQFP package is a common footprint that rework techs can swap on site with a standard soldering iron — no hot-air station required.
512 KB of Flash and 128 KB SRAM are on-chip.
20-channel 12-bit ADC and 7-channel 12-bit DAC — analog integration
The on-chip data converters include 20 multiplexed 12-bit ADC channels and seven 12-bit DAC outputs. That is enough analog I/O to handle three-phase current sensing plus a couple of setpoint voltages without external converters. The ADC can sample at rates suitable for control loops in the tens of kHz range, though the exact conversion time depends on the clock configuration. For designs that need simultaneous sampling, the part supports dual-ADC modes — check the reference manual for the interleaving options.
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