- Based on F4 series cheapest chip STM32F401CCU6, competitive price to F1 series
- But faster speed and own the float calculation function
- Board lead out all IOs for use.
On board resources:
- VB can connect coin battery power supply
- On board 32.768Khz crystal, and 25Mhz main crystal
- Typc-C programming port
- V+/V- can connect external ADC reference voltage, default to power voltage.
- B2 boot select pin is selectable for boot configuring or normal GPIO.
- SW debug port
- Reset buttons.
Schematic please find on this page.