72 MHz Cortex-M4 with DSP and FPU — what it means for the BOM
The STM32F303CCT7 is a 32-bit ARM Cortex-M4 MCU from STMicroelectronics' STM32F3 series, running at 72 MHz with a single-precision FPU and DSP instructions. That core speed, combined with 256 KB of Flash and 40 KB of SRAM, puts it in the mid-range mixed-signal control tier — suited for motor drives, digital power conversion, and sensor fusion where you need real-time loop closure without an external DSP. The 48-LQFP package (7x7 mm) keeps board footprint small, and the 37 GPIOs give enough headroom for a CANbus transceiver, a few analog inputs, and a PWM stage without needing a port expander.
Industrial temperature grade — deployment context
Rated for -40°C to 105°C ambient, this MCU operates from a 2 V to 3.6 V supply range.
Peripheral set and connectivity
On-chip peripherals include DMA, I²S, POR, PWM, and a watchdog timer. Connectivity covers CANbus, I²C, IrDA, LINbus, SPI, UART/USART, and USB — enough to talk to a VFD over CANopen, log data over UART, or interface with an external ADC over SPI. The 15-channel 12-bit ADC and dual 12-bit DAC handle analog front-end tasks without an external converter.