72 MHz Cortex-M4 in a 5x5 mm UFQFPN — the BOM fit
The STM32F301K6U7TR is an ARM Cortex-M4 32-bit MCU from the STM32F3 series, running at 72 MHz with single-cycle DSP and floating-point unit.
32 KB Flash — sizing the firmware budget
With 32 KB of program Flash and 16 KB of SRAM, this is the smallest density in the STM32F301 family. If your application needs over-the-air updates or a complex state machine, the same footprint is shared by higher-density siblings in the STM32F301 line — worth qualifying before the layout locks.
Industrial temperature range and 24 I/O
The 24 I/O lines, combined with the internal oscillator and peripherals (DMA, I²S, POR, PWM, WDT), let this MCU handle a sensor-fusion or brushless-DC motor controller with a single chip, no external clock or supervisor needed.
Data converters and connectivity
The connectivity set — I²C, SPI, UART/USART, LIN, and IrDA — covers the common industrial serial buses. The 72 MHz core with FPU can run a PID loop or a sensor-fusion algorithm in single-precision math without a separate DSP.