Description
Arduino Leonardo without headers 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 ceramic resonator, a micro USB connector, 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.
The Arduino Leonardo differs from all previous boards in that the ATmega32U4 has built-in USB communication. This allows the Leonardo to appear to a connected computer as a mouse and keyboard or a virtual COM port for serial communication.
This board is delivered without headers, but they can be connected and the following are required: 1×6, 2×8, 1×10.
Arduino Leonardo overview:
– Microcontroller: ATmega32u4
– Operating voltage: 5V
– Input voltage (recommended): 7-12V
– Input voltage (limits): 6-20V
– Digital I/O Pins: 20 (7 of which provide PWM outputs and 12 as analog input)
– DC current per I/O pin: 40 mA
– DC current for the 3,3V Pin: 50 mA
– Flash memory: 32 KB (ATmega328u4) of which 4 KB used by bootloader
– SRAM: 2,5 KB (ATmega328u4)
– EEPROM: 1 KB (ATmega328u4)
– Clock speed: 16 MHz
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