Ks0249 keyestudio PRO MICRO Development Board

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Keyestudio PRO MICRO development board is compatible with all Arduino skills, including four analog inputs, five PWM pins, twelve digital inputs/outputs and hardware serial port Rx and Tx. Its operating voltage is 3.3V and working frequency is 16MHz, which can accept external supply voltage up to DC 9V. The anode of power supply board must be connected to the "RAW". We also added a PTC fuse and diode to protect power supply circuit. In choosing test program, Arduino IDE version must be advanced or equal than the 1.0.3 version.


  • Microcontroller: ATMEGA32U4
  • RAW: 7V-9V
  • VCC: 3.3V at 500mA
  • Digital I/O Pins: 12 (of which 5 provide PWM output)
  • Analog Input Pins: 4
  • Maximum current for chip: 200mA
  • Maximum current per pin: 40mA
  • Recommended current per pin: 20mA
  • 8-bit Atmel AVR
  • Flash Program Memory: 32kB
  • EEPROM: 1kB
  • Internal SRAM 2.5kB
  • ADC:10-bit
  • PWM:8bit
  • High Speed PWM with programmable resolution from 2-11 bits

Pin Diagram

Please refer to the figure shown below.



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