Arduino Leonardo R3

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Introduction : 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. Features : Microcontroller: ATmega32u4 Operating Voltage: 5V Input Voltage (Recommended): 7-12V MAX 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 bootloade SRAM: 2.5 KB (ATmega32u4) EEPROM: 1 KB (ATmega32u4) Clock Speed: 16 MHz Length: 68.6 mm x 53.3 mm Board Name Arduino® Leonardo SKU A000057 Microcontroller ATmega32u4 USB connector Micro USB (USB-B) Pins Built-in LED Pin 13 Digital I/O Pins 20 Analog input pins 12 PWM pins 7 Communication UART Yes I2C Yes SPI Yes Power I/O Voltage 5V Input voltage (nominal) 7-12V DC Current per I/O Pin 10 mA Power Supply Connector Barrel Plug Clock speed Processor ATmega32U4 16 MHz Memory ATmega32U4 2.5KB SRAM, 32KB FLASH, 1KB EEPROM Dimensions Weight 20 g Width 53.3 mm Length 68.6 mm Package Includes: 1x Arduino Leonardo R3 Board Documents: More detail Wiki Relate Products: Arduino | Shields