72 MHz Cortex-M4 in a 5x5 mm package — what that buys you
The 32-UFQFPN package (5x5 mm) with an exposed pad pulls heat into the PCB ground plane, which matters when the core is running the FPU flat out at 72 MHz in a 105 °C ambient.
Peripheral set — CANbus, analog, and the usual serial suspects
Onboard CANbus (2.0B Active) is the headline interface — it connects directly to industrial fieldbus or automotive subnets without an external transceiver controller. The data-converter block gives you eight 12-bit ADC channels and one 12-bit DAC. That is enough for three-phase current sensing plus a voltage reference or set-point output in a motor drive, or for a multi-channel data-acquisition front end. The DMA offloads the Cortex-M4 during high-rate ADC reads or serial transfers, keeping the core free for control arithmetic.
STM32F302K8U7 carries an active lifecycle status.