![]() The SPI pins are also broken out on the ICSP header, which is physically compatible with the Uno, Duemilanove, and Diecimila. These pins support SPI communication using the SPI library. Provide 8-bit PWM output with the analogWrite() function. See the attachInterrupt() function for details. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. External Interrupts: 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2).Pins 0 and 1 are also connected to the corresponding pins of the ATmega8U2 USB-to-TTL Serial chip. Used to receive (RX) and transmit (TX) TTL serial data. Flash Memory -256 KB of which 8 KB used by bootloader.Digital I/O Pins -54 (of which 14 provide PWM output).Schematic: arduino-mega2560-schematic.pdf This new version has R3 compatible headers with extra header pins for I2C, I/O ref & and an extra unused pin.ĮAGLE files: arduino-mega2560-reference-design.zip The Mega is compatible with most shields designed for the Arduino Duemilanove or Uno. ![]() 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. NThe Arduino Mega 2560 is a microcontroller board based on the ATmega2560 (It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button.
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