STMicroelectronics NUCLEO-F303K8

Overview

NUCLEO-F303K8 from STMicroelectronics is a 32-pin STM32 Nucleo-32 development board built around the STM32F303K8T6 Arm® Cortex®-M4F microcontroller (72 MHz, 64 KB Flash, 16 KB SRAM), featuring on-board ST-LINK/V2-1 debugger/programmer, ARDUINO® Nano V3 expansion connector, and Micro-AB USB interface for programming and virtual COM port. It targets rapid prototyping of motor control, analog signal processing, and sensor fusion applications.

For engineers reviewing the NUCLEO-F303K8 datasheet, NUCLEO-F303K8 pinout, NUCLEO-F303K8 application, or NUCLEO-F303K8 equivalent, key selection criteria include integrated debug interface compatibility, 32-pin LQFP package footprint, 24 MHz crystal oscillator support, ARDUINO Nano V3 shield interoperability, and STM32Cube ecosystem integration with IAR, Keil MDK-ARM, and STM32CubeIDE.

Technical Context

The board implements a full-featured evaluation platform for the STM32F303K8T6 MCU, which integrates a Cortex-M4F core with FPU, high-speed analog peripherals (op-amps, comparators, ADCs), and advanced timers optimized for real-time control. It uses an external 24 MHz crystal oscillator for precise clock generation and supports dual power domains (USB VBUS and external supply).

ST-LINK/V2-1 firmware enables simultaneous mass storage device emulation, Virtual COM port, and SWD/JTAG debugging over a single Micro-AB USB connection-no external probe required. The ARDUINO Nano V3 header provides access to GPIO, ADC, PWM, I²C, SPI, and USART signals mapped to the MCU's physical pins.

Key Specifications

Availability

NUCLEO-F303K8 is available at Aetrix Electronics and suitable for motor control prototyping, analog sensor interface development, embedded education labs, and industrial edge node validation requiring stable component supply and long-term toolchain support.

Supply support for NUCLEO-F303K8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32 Nucleo series delivers standardized, low-cost evaluation platforms for STM32 MCUs-designed to accelerate firmware development, peripheral validation, and ecosystem integration across performance, ultra-low-power, and mainstream product lines.

FAQ

Does NUCLEO-F303K8 support drag-and-drop programming like some other Nucleo boards?

No. NUCLEO-F303K8 uses ST-LINK/V2-1 firmware that does not implement mass storage drag-and-drop programming. Firmware updates require STM32CubeProgrammer, OpenOCD, or IDE-integrated flashing tools via SWD or virtual COM port. This differs from ST-LINK/V3E-based boards such as NUCLEO-G431KB.

What is the maximum operating frequency of the STM32F303K8T6 on this board?

The STM32F303K8T6 MCU operates at up to 72 MHz using its internal PLL, driven by the 24 MHz external crystal oscillator. The board's clock tree configuration supports full-speed USB (48 MHz) and high-resolution timer operation without external clock sources.

Can the ARDUINO Nano V3 connector be used to interface with standard Arduino shields?

Yes-the ARDUINO Nano V3 header provides pinout compatibility with Arduino Nano shields, but voltage and signal level compatibility must be verified. The NUCLEO-F303K8 operates at 3.3 V logic; shields requiring 5 V I/O or specific bootloader behavior may need level-shifting or firmware adaptation.

Is the 24 MHz crystal oscillator used by default for system clock generation?

Yes. The 24 MHz crystal is the primary high-speed clock source. The STM32F303K8T6's RCC configures the PLL to multiply it to 72 MHz for the CPU and 48 MHz for USB. The HSE oscillator is enabled by default in STM32CubeMX-generated initialization code and HAL drivers.