ARM Cortex M4 Microcontroller

Performance

• Maximum Operating Frequency: 100MHz
• Zero-wait access memory with Floating Point Unit (FPU)

Memory

• 512KB ROM Flash Program Memory
• 128KB SRAM Static Random Access Memory
• Unpopulated SPI Flash

Clock and Power

• Power Input: 3.3V – 5V
• 3.3V LDO Maximum Output Current: 100mA
• Equipped with US8C protection diode to prevent power backflow
• 25MHz 9pF High-speed Crystal Oscillator
• 32.768K 6pF Low-speed Crystal Oscillator

Interfaces and Buttons

• USART: 3
• I2C: 3
• SPI: 5
• USB FS: 1
• ADC: 1 (10-bit)
• I2S: 5
• CRC: 1
• TIM: 8
• 20Pin 2.54mm Pitch I/O Interfaces: 2
• 4Pin 2.54mm Pitch SW Debug Interface: 1
• USB Type-C Interface: 1
• User Button (KEY PA0): 1
• Reset Button (NRST): 1
• BOOT0 Button: 1

Design and Quality

• Lead-free soldering process with gold-plated PCB
• BOOT setting is configured via a button
• High-quality crystals and metal housing ensure good oscillation
• Always use genuine ST chips
• Regular updates on GitHub/Gitee for the chip batch numbers to ensure the purchase of brand new chips
• No factory test program provided to prevent counterfeiting and maintain quality

Dimensions and Accessories

• Dimensions: 52.38mm × 20.78mm
• Accessories:
  • 20Pin 2.54mm Pitch Header: 2
  • 4Pin 2.54mm Pitch Bent Header: 1
• Core board packaged in a self-sealing anti-static bag, with headers packed separately to reduce damage
• Altium Designer core board package information provided

Development Methods and Examples

• STM32 HAL library examples, USBDisk & FATFS examples
• Standard library examples provided
• Includes MicroPython firmware and configuration files
• Supports Arduino programming; search for Arduino_Core_STM32 on GitHub

How to enter ISP (serial port /USB download)

Method 1:
Press Boot0 and NRST at the same time and release NRST. After 0.5s, release Boot0 and enter ISP mode
Method 2:
In the power off state, press Boot0, power on, wait for 0.5s, release to enter ISP mode
Serial port download: use USB to serial port to connect the core board PA9,PA10 can be, do not use USB port power supply
USB download: use the data cable to connect to the computer, if there is no identification problem,The chip can be properly heated (25°C+),then re-entering ISP mode
STM32CubeProg, Weact Studio Download Tool (see Github/WeActTC/MiniSTM32F4x1/Soft/)
No USB to serial port, no debugger, no computer driver, just a Type-C data line can complete the firmware download
1. Burn HID IAP firmware (the factory program brushes in by default, which is a special testversion)
2. Press the KEY KEY to power up or press the KEY to reset, LED C13 flashes, release the KEY to enter
3. Confirm APP firmware address is 0x8004000, interrupt address offset is 0x4000