Product Description

The STM32F401CCU6 Minimum System STM32 ARM Core Board is a compact, low-cost development board designed for learning, programming, and developing applications based on the STM32F401CCU6 ARM Cortex-M4 32-bit microcontroller. It provides a convenient minimum-system platform for students, beginners, hobbyists, and embedded developers who want to explore STM32 microcontroller programming and ARM-based embedded systems.

The board includes high-speed and low-speed crystal oscillators, reserved flash expansion pads, a built-in BOOT0 pull-down resistor, and onboard buttons for reset, boot selection, and user control. A breathing LED and USB CDC test program are pre-programmed at the factory, allowing users to quickly test the board after setup.

With its compact 20 mm width and simple development-oriented design, this board is suitable for embedded learning, firmware development, USB experiments, and various STM32-based projects.

Features

• Based on STM32F401CCU6 ARM Cortex-M4 32-bit MCU
• Low-cost minimum system development board
• 25 MHz high-speed crystal
• 32.768 kHz, 6 pF low-speed crystal
• Flash expansion pads are reserved on the board
• Supports USB Disk and FATFS routines
• Built-in 10KΩ BOOT0 pull-down resistor
• No jumper cap required for normal direct use
• Factory-programmed breathing LED test program
• Factory-programmed USB CDC test program
• V1.3 version includes 3 buttons
  • Reset button
  • BOOT0 button
  • User button
• Compact 20 mm width module
• Suitable for STM32 learning and embedded development

Specifications

Working Principle

The STM32F401CCU6 microcontroller acts as the main processing unit of the development board. The high-speed 25 MHz crystal provides the main clock reference, while the 32.768 kHz crystal can be used as a low-speed clock source for applications requiring accurate low-frequency timing.

The BOOT0 circuitry allows the microcontroller’s boot mode to be selected as required. The onboard buttons provide convenient access to reset, boot and user-input functions.

The factory-programmed breathing LED and USB CDC test programs provide a simple way to verify basic board operation and demonstrate STM32 firmware functionality.

Clock Circuit

The board provides two crystal oscillators:

• 25 MHz high-speed crystal for the main system clock.
• 32.768 kHz low-speed crystal with a 6 pF specification for low-frequency timing functions.

These clock sources help provide the timing required by the STM32F401CCU6 microcontroller and its peripherals.

BOOT0 and Buttons

The board is designed for convenient boot and reset operation.

The BOOT0 pin has an internal 10KΩ pull-down resistor, allowing the board to be used directly without requiring a jumper cap for normal operation.

The V1.3 version provides three buttons:

• Reset Button – resets the microcontroller.
• BOOT0 Button – assists with boot-mode selection.
• User Button – available for user-programmed functions.

USB and Flash Support

The board includes provisions for USB-based development and testing. A USB CDC test program is pre-programmed at the factory, allowing the USB communication functionality to be evaluated.

Flash pads are also reserved on the board, and the product information indicates support for USBDisk and FATFS routines, making it suitable for projects involving USB storage and file-system experimentation.

Design and Construction

The STM32F401CCU6 board uses a compact minimum-system design intended to provide the essential hardware required for STM32 development without unnecessary complexity. Its approximately 20 mm module width makes it convenient for compact embedded projects and custom PCB integration.

The board is particularly suitable for learners because the essential MCU, clock, boot, reset, user-input and development functions are provided on a single board.

Applications

The STM32F401CCU6 Minimum System Board can be used for:

• STM32 microcontroller learning
• ARM Cortex-M4 programming
• Embedded systems development
• Firmware development
• USB communication projects
• USB CDC experiments
• FATFS and USB storage projects
• Microcontroller programming practice
• Electronics and embedded-system education
• DIY STM32 projects
• Prototype development
• Custom embedded applications

Package Includes

• 1 × STM32F401CCU6 Development Board / STM32 ARM Core Board

Product Disclaimer

• This is a development board, not a complete application system.
• Programming/debugging may require a suitable programmer or debugger depending on the development environment.
• Features such as USB Disk and FATFS functionality depend on the firmware and software implementation.
• Board appearance and minor component details may vary between production batches.
• The package includes only the STM32F401CCU6 development board unless otherwise specified.