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Password: e9gx

Why choose 401?

In the F401 series, the chip is the cheapest, even cheaper than some F1, and crushed F1 on the main frequency, and has a floating-point arithmetic module, the IO port contains all the basic functions. Therefore, it is possible to provide a learning platform with a very high cost performance for beginners. In practical applications, it is not because the computing power is insufficient, and the IO port is incomplete and hinders development.

25MHZ high speed crystal oscillator 32.768k low speed crystal oscillator

STM32F401CCU6 core board 64KB RAM 256KB ROM

STM32F411CEU6 core board 128KB RAM 512KB ROM

BOOT settings are changed from jumper to button to reduce the installation trouble by pressing

BOOT0 and NRST, releasing NRST to access serial port download, DFU download, providing ST official multi-in-one STM32 Cube Programmer burning software.

Core board factory default is the breathing light firmware

Firmware download mode:

SWD mode：