72 MHz Cortex-M4 with DSP and FPU — what it means for control loops
The STM32F302RBT7: 32-bit ARM Cortex-M4 MCU clocked at 72 MHz with 128 KB Flash and 32 KB RAM. 52 GPIOs in a 64-LQFP package.
Analog front-end: 16 ADC channels and a DAC on-chip
This part carries 16 multiplexed 12-bit ADC channels and a single 12-bit DAC. For a 64-pin package, that analog density is generous — you can read a three-phase current-sense set, a DC-link voltage, and a few thermistors without external muxes. The DAC is useful for analog setpoint generation or sensor excitation bias. If your BOM needs more than one analog output, you will need an external DAC or a different STM32F3 variant with multiple DAC channels.
Industrial temperature grade and CANbus for field-deployed control
Includes CANbus interface.
For dual-sourcing resilience, the STM32F302 family shares pin-compatibility across density options within the same package footprint, so a move to a higher-Flash sibling is a BOM-line change, not a board respin.