A000057: Arduino Leonardo

Summary

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.

Specifications

Manufacturer	Arduino
Category	Open Source MCU Platforms
Eval Board Part Number	1050-1040-ND
Eval Board Supplier	Arduino
IDE	Arduino
Speed	16 MHz
Bits	8 Bit
Memory, Flash/RAM	32 kB / 2.5 kB
Digital I/O	20 I/O, 7 PWM
Interface	I²C x1 SPI x1 UART x1 USB Device
Analog Outputs (DACs)	7 x 8 Bit
Analog Inputs (ADCs)	12 x 10 Bit
DMA Channels	0
Features	Arduino UNO Form Factor Compatible Over Current Protection Timers
Radio	-
Interrupt Pins	5
I/O Voltage	5 V
Voltage In	7 ~ 12 V
Touch Sensing Pins	0
Program/Debug Interface	ISP Header USB Type-Micro AB
Area	3658² mm, 5.67² In
Main I.C. Base Part	ATmega32U4
Design Author	Arduino
Date Created By Author
Date Added To Library	2018-07