A000057 -Arduino LEONARDO WITH HEADERS

<p>The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input/output pins (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 an AC-to-DC adapter or battery to get started.</p> <p>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.</p> <h2>Key Features:</h2> <ul> <li>Microcontroller: ATmega32u4</li> <li>Operating Voltage: 5V</li> <li>Input Voltage (Recommended): 7-12V</li> <li>Input Voltage (Limits): 6-20V</li> <li>Digital I/O Pins: 20</li> <li>PWM Channels: 7</li> <li>Analog Input Channels: 12</li> <li>DC Current per I/O Pin: 40 mA</li> <li>DC Current for 3.3V Pin: 50 mA</li> <li>Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by bootloader</li> <li>SRAM: 2.5 KB (ATmega32u4)</li> <li>EEPROM: 1 KB (ATmega32u4)</li> <li>Clock Speed: 16 MHz</li> <li>Length: 68.6 mm</li> <li>Width: 53.3 mm</li> <li>Weight: 20 g</li> </ul>