Arduino-pro-micro

Pro Micro

Information about the Pro Micro goes here

Note: The Pro Micro is not an Arduino board, it is classified as an Arduino compatible board.

Hardware information

Hookup guide (from Sparkfun) - external link: https://learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/hardware-overview-pro-micro

Noted Differences in the Pro Micro

  • There are no digital input pins 11,12,13 and 17 available on the controller board
  • The amber LED is assigned as digital 17, which is also the RX LED. This LED is under reverse logic rules, setting it LOW turns on the LED while setting it HIGH turns off the LED.
  • I2C support:
    • digital pin 2 is SDA
    • digital pin 3 is SCL
  • SPI support:
    • digital pin 16 is MOSI
    • digital pin 15 is MISO
    • digital pin 14 is SCLK (or SCK)
    • digital pin 17 is SS
  • The controller comes in two versions based on operating voltage and processing speed:
    • 5 Volt and 16 MHz
    • 3.3 Volt and 8 MHz
  • The AREF (Analog Reference) input pin does not exist

Vendor information

vendorpart #pricecomments
Sparkfunexternal link: DEV-12640$19.955 volt, 16 MHz version
Sparkfunexternal link: DEV-12587$19.953.3 volt, 8 MHz version

Pro Micro wiring template

function namealternate function nameconnect tocomments
TX0   
RX1   
GND   
GND   
2SDA  
3SCL  
4A6  
5   
6A7  
7   
8A8  
9A9  
10A10  
16MOSI  
14MISO  
15SCLK  
A018  
A119  
A220  
A321  
VCC   
RST   
GND   
RAW