ARM Cortex-M4 at 72 MHz — the control-loop workhorse
The 21-channel 12-bit ADC and three 12-bit DAC channels are the standout analog features here — this part carries more ADC channels than many Cortex-M4 peers, which matters when you are sensing multiple phases or monitoring several analog feedback paths on the same die.
Supply range and package — layout-fit check
Operates from 2.0 V to 3.6 V on Vcc/Vdd, which covers a 3.3 V regulated rail with margin for a 3.0 V lithium cell on the low end.
For a production BOM this means you can plan multi-year builds without an obsolescence-driven redesign.