See the attachInterrupt() function for details.Īs they are on the Uno, They are only available on the ICSP connector. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. Note that on the Leonardo, the Serial class refers to USB (CDC) communication for TTL serial on pins 0 and 1, use the Serial1 class. Used to receive (RX) and transmit (TX) TTL serial data using the ATmega32U4 hardware serial capability. Using the AREF pin and the analogReference() function.Įach of the 20 digital i/o pins on the Leonardo can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() Volts, though is it possible to change the upper end of their range By default the analog inputs measure from ground to 5 Each analog input provide 10 bits of resolution (i.e. All of which can also be used asĭigital I/O. Labelled directly on the pins and the other ones that you can access inĬode using the constants from A6 trough A11 are shared respectively onĭigital pins 4, 6, 8, 9, 10, and 12. The Micro has a total of 12 analog inputs, pins from A0 to A5 are When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. There is a built-in LED connected to digital pin 13. RX_LED that indicates the activity of transmission during USBĬommunication, but is can also used as slave select pin (SS) in SPI Note that the SPI pins are not connected to any of the digital I/O pinsĪs they are on the Arduino Uno, they are only available on the ICSPĬonnector and on the nearby pins labelled MISO, MOSI and SCK.Īdditional pin with respect to the Leonardo. These pins support SPI communication using the SPI library. Provide 8-bit PWM output with the analogWrite() function. See the attachInterrupt() function for details.
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