Bottom add short circuit pad, welding pad,
USB Csupport output5V, supportUSB Host
Change LDO to
ME6206A33XGfor easy maintenance
Metallized Logo
Size unchanged, pin definition unchanged
Button
KEYseries 330Ω resistance, prevent user settingsKEYpin for the output mode after the button press cause short circuit, and the appearance remains unchanged.Process improvement, use Lead-Free process.
Solve the problem that the USB C line with
e-markerchip cannot provide power, and addD4diode (B5819WS SL) to prevent USB power surge, and the appearance remains unchanged
Solve the problem that the USB C line with
e-markerchip cannot provide power, and addD4diode (B5819WS SL) to prevent USB power surge, and the appearance remains unchanged
SDIO is not commonly used, restore Flash pin: Flash MISO pin changed from PB4 to PA6,The look is consistent with V2.0.
The thickness of the board was changed to 1.6mm, the Flash MISO foot was changed from PA6 to PB4, and the keys were changed to large buttons.
This button is a decompression device, MISO foot change, F401 users have no impact, default brush into HID Bootloader, similar to 51 MCU download.
Add user KEY (PA0)
The BOOT setting is changed from jumper to keypad to reduce installation hassle.
Press BOOT0 and NRST, release NRST, release BOOT0 after 0.5s, then enter serial port for download, DFU download, provide STM32CubeProgrammer burning software of ST official multi-in-one.
