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Item#: 9SIA3260ZC8560

Arduino Leonardo Without Headers Authentic Made in Italy 5V 16MHz ATmega32u4 32KB Flash 1KB EEPROM Development Board for Electronic Design, and Classroom. C++ Coding & compatible with shields. - OEM

  • Prototyping Products
  • Atmega
  • +85 C

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

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.

Microcontroller ATmega32u4
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 20
PWM Channels 7
Analog Input Channels 12
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega32u4) of which 4 KB used by bootloader
SRAM 2.5 KB (ATmega32u4)
EEPROM 1 KB (ATmega32u4)
Clock Speed 16 MHz

Learn more about the Arduino Arduino Leonardo


Arduino Leonardo


Prototyping Products
Core Architecture
2.7 inch by 2.1 inch
Fiberglass Composite
Voltage Rating DC
7V ~ 12V
Operating Temperature Min
-40 C
Operating Temperature Max
+85 C
Warranty, Returns, And Additional Information

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Item#: 9SIA3260ZC8560
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