Arduino Leonardo View larger

Arduino Leonardo

The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). 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, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

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17.01 JD

Overview

The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). 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, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo 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.

*Note: This is not an original Arduino brand product, it is manufactured with the same components and functionality by a different manufacturer.

Specifications

  • MicrocontrollerATmega32u4
  • Operating Voltage5V
  • Input Voltage (recommended)7-12V
  • Input Voltage (limits)6-20V
  • Digital I/O Pins20
  • PWM Channels7
  • Analog Input Channels12
  • DC Current per I/O Pin40 mA
  • DC Current for 3.3V Pin50 mA
  • Flash Memory32 KB (ATmega32u4) of which 4 KB used by bootloader
  • SRAM2.5 KB (ATmega32u4)
  • EEPROM1 KB (ATmega32u4)
  • Clock Speed16 MHz
 

Includes:

  • 1 x Arduino Leonardo board
  • 1 x USB cable

 

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