72 MHz Cortex-M4 with FPU — real-time control headroom
The STM32F302K8U6 runs an ARM Cortex-M4 core at 72 MHz with a single-precision floating-point unit — the FPU handles PID coefficients and sensor fusion math in hardware rather than emulated in software, which frees CPU cycles for the control loop itself. 64 KB of flash and 16 KB of SRAM (organized as 16K x 8) give the firmware and data buffer budget for a moderate-complexity application: a motor-control stack with field-oriented control fits, but a full GUI stack with a real-time OS will push the flash ceiling.
Peripheral set for field-oriented motor control and industrial I/O
The data converter block provides eight 12-bit ADC channels and one 12-bit DAC — the ADCs can sample three-phase currents and a DC-link voltage simultaneously using the injected-conversion mode, which is the typical sense chain for a vector-controlled motor drive.
32-UFQFPN package — board-fit and thermal considerations
The 24 general-purpose I/O pins are the practical limit for a sensor-rich node — a typical motor-control board uses 6 for PWM outputs, 4 for encoder inputs, 2 for CAN, and 2 for UART debug, leaving 10 for limit switches, fault inputs, and an LED bank.
Available through independent distribution channels; pricing and lead time are confirmed at RFQ against the specific BOM quantity and required date-code window. The base product number STM32F302 covers a family of pin-compatible variants with different flash sizes and package options — the K8 suffix identifies the 64 KB flash / 32-pin UFQFPN variant, which is the smallest footprint in the series.