A000052 Arduino, A000052 Datasheet - Page 4

• Manufacturer Part Number: A000052
• Description: Development Boards & Kits - AVR ARDUINO LEONARDO W/O HEADERS
• Manufacturer: Arduino

Specifications of A000052

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: ATmega32u4
• Core: AVR
• Interface Type: USB
• Operating Supply Voltage: 7 V to 12 V
• Data Bus Width: 10 bit
• For Use With: ATmega32u4

have specialized functions:
There are a couple of other pins on the board:
See also the
Communication
The Leonardo has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega32U4 provides UART TTL
(5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). The 32U4 also allows for serial (CDC) communication over USB and appears as a
virtual com port to software on the computer. The chip also acts as a full speed USB 2.0 device, using standard USB COM drivers.
required. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. The RX and TX LEDs on the
board will flash when data is being transmitted via the USB connection to the computer (but not for serial communication on pins 0 and 1).
A
The ATmega32U4 also supports I2C (TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the I2C bus; see the
documentation
The Leonardo appears as a generic keyboard and mouse, and can be programmed to control these input devices using the
Revision 11-1-2012
SoftwareSerial library
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Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data using the ATmega32U4 hardware serial capability. Note that on the
Leonardo, the Serial class refers to USB (CDC) communication; for TTL serial on pins 0 and 1, use the Serial1 class.
TWI: 2 (SDA) and 3 (SCL). Support TWI communication using the
External Interrupts: 2 and 3. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the
attachInterrupt()
PWM: 3, 5, 6, 9, 10, 11, and 13. Provide 8-bit PWM output with the
SPI: on the ICSP header. These pins support SPI communication using the
pins as they are on the Uno, They are only available on the ICSP connector. This means that if you have a shield that uses SPI, but does NOT have a 6-pin
ICSP connector that connects to the Leonardo's 6-pin ICSP header, the shield will not work.
LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.
Analog Inputs: A0-A5, A6 - A11 (on digital pins 4, 6, 8, 9, 10, and 12). The Leonardo has 12 analog inputs, labeled A0 through A11, all of which can also
be used as digital i/o. Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively. Each
analog input provide 10 bits of resolution (i.e. 1024 different values). By default the analog inputs measure from ground to 5 volts, though is it possible
to change the upper end of their range using the AREF pin and the analogReference() function.
AREF. Reference voltage for the analog inputs. Used with analogReference().
Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board.
mapping between Arduino pins and ATmega32u4
for details. For SPI communication, use the
allows for serial communication on any of the Leonardo's digital pins.
function for details.
To view the latest information, visit
SPI
ports.
library.
Wire
analogWrite()
library.
http://www.arduino.cc/
SPI
library. Note that the SPI pins are not connected to any of the digital I/O
function.
Keyboard and Mouse
On Windows, a .inf file is
classes.
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