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.
Specifications
Clock Speed
16 MHz
Current
DC Current per I/O Pin - 40 mA
DC Current for 3.3V Pin - 50 mA
EEPROM
1 KB (ATmega32u4)
Flash Memory
32 KB (ATmega32u4) of which 4 KB used by bootloader
I/O Pins
Digital I/O Pins - 20(PWM Channels 7)
Analog Input Pins - 12
Input Voltage
Recommended 7-12V
Limits 6-20V
Length x Width
68.6 mm x 53.3 mm
Microcontroller
ATmega32u4
Operating Voltage
5
V
Package
Arduino Leonardo Compatible Board
Data Cable
SRAM
2.5 KB (ATmega32u4)
Weight
20
g