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ARDUINO MICRO

Code:A000053

ArduinoMicroisthesmallestboardofthefamily,easytointegrate

itineverydayobjectstomaketheminteractive.

TheMicroisbasedontheATmega32U4microcontrollerfeaturinga

built‐inUSBwhichmakestheMicrorecognisableasamouseor

keyboard.



 TheMicroisamicrocontrollerboardbasedontheATmega32U4(datasheet),

developedinconjunctionwithAdafruit.Ithas20digitalinput/outputpins(of

which7canbeusedasPWMoutputsand12asanaloginputs),a16MHzcrystal

oscillator,amicroUSBconnection,anICSPheader,andaresetbutton.Itcontains

everythingneededtosupportthemicrocontroller;simplyconnectittoacomputer

withamicroUSBcabletogetstarted.Ithasaformfactorthatenablesittobe

easilyplacedonabreadboard.

http://www.atmel.com/Images/Atmel‐7766‐8‐bit‐AVR‐ATmega16U4‐

32U4_Datasheet.pdf

Summary of content (6 pages)

PAGE 1
ARDUINO MICRO Code: A000053 Arduino Micro is the smallest board of the family, easy to integrate it in everyday objects to make them interactive. The Micro is based on the ATmega32U4 microcontroller featuring a built‐in USB which makes the Micro recognisable as a mouse or keyboard.  The Micro is a microcontroller board based on the ATmega32U4 (datasheet), developed in conjunction with Adafruit.
PAGE 2
The Micro board is similar to the Arduino Leonardo in that the ATmega32U4 has built‐in USB communication, eliminating the need for a secondary processor. This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the getting started page. https://www.arduino.
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External (non‐USB) power can come either from a DC power supply or battery. Leads from a battery or DC power supply can be connected to the Gnd and Vin pins. The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may become unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts.     The power pins are as follows: VI.
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 In addition, some pins have specialized functions: Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data using the ATmega32U4 hardware serial capability. Note that on the Micro, the Serial class refers to USB (CDC) communication; for TTL serial on pins 0 and 1, use the Serial1 class.  TWI: 2 (SDA) and 3 (SCL). Support TWI communication using the Wire library. https://www.arduino.cc/en/Reference/Wire  External Interrupts: 0(RX), 1(TX), 2, 3 and 7.
PAGE 5
 Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board. Communication The Micro has a number of facilities for communicating with a computer, another board of the Arduino & Genuino family, or other microcontrollers. The 32U4 provides UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX).
PAGE 6
bootloader starts, remaining active for about 8 seconds. The bootloader can also be initiated by pressing the reset button on the Micro. Note that when the board first powers up, it will jump straight to the user sketch, if present, rather than initiating the bootloader. Because of the way the Micro handles reset it's best to let the Arduino Software (IDE) try to initiate the reset before uploading, especially if you are in the habit of pressing the reset button before uploading on other boards.