Arduino LEONARDO

The Arduino Leonardo is a microcontroller board based on the ATmega32u4. 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 behaviour of the board.

 

ARDUINO MICROCONTROLLER

Microcontroller

ATmega32u4

Architecture

AVR

Operating Voltage

5 V

Flash memory

32 KB of which 4 KB used by bootloader

SRAM

2.5 KB

Clock Speed

16 MHz

Analog I/O Pins

12

EEPROM

1 KB

DC Current per I/O Pins

40 mA on I/O Pins; 50 mA on 3.3V

GENERAL

Input Voltage

7-12 V

Digital I/O Pins

20 (of which 7 provide PWM output)

PWM Output

7

Power Consumption

31 mA

PCB Size

53.3 x 68.5 mm

Weight

20g with headers / 14 g without headers

Product Code

A000057 (with headers); A000052 (without headers)