Product Description
Operating frequency:
STM32F401CEU6: ARM Cortex M4 core, maximum operating frequency 84MHz;
Memory:
STM32F401CEU6: 512KB ROM flash program memory; 96KB SRAM static random access memory; SPI Flash (not soldered);
Interfaces and Buttons:
USART¡Á3, I2C¡Á3, SPI¡Á5, USBFS¡Á1, ADC¡Á1(10), I2S¡Á5, CRC¡Á1, TIM¡Á8;
20Pin 2.54mm pitch I0 interface¡Á2, 4Pin 2.54mm pitch SW debug interface¡Á1;
USB C (type C) interface¡Á1;
User button KEY (PA0)¡Á1, Reset button NRST x1, BOOT0 button x1.
Clock and Power Supply:
3.3V-5V power input, 3.3V LDO MAX output current 100mA; Uses Type-C USB interface with a diode in series to prevent backflow.
25MHz high-speed crystal oscillator, 32.768KHz low-speed crystal oscillator.
ISP Mode Download
For ISP mode program download, we support two methods: serial download (requires USB to serial adapter) and USB download (recommended), requiring only one data cable.
How to enter ISP mode:
1. With power on, press and hold the BOOT0 button and the reset button, then release the reset button. Release the BOOT0 button after 0.5 seconds.
2. With power off, press and hold the BOOT0 button. Release the BOOT0 button 0.5 seconds after powering on.
Connection Methods:
1. USB download: Connect the USB data cable to the board's TYPE-C interface.
2. Serial download: Connect the USB to serial port to PA9 and PA10.