Description
The Mega 2560 R3 with ATmega16U2 is an Arduino-compatible board that uses the original USB device, ensuring the highest level of compatibility. It offers a large number of I/O pins and ample memory, making it ideal for bigger and more complex projects.
Package Includes
Mega 2560 R3 with ATmega16U2 USB (Arduino Mega 2560 R3 compatible)
Key Features
ATmega2560 processor running at 16MHz
ATmega16U2 programmed as a serial-to-USB converter (same as the original Arduino Mega 2560 R3)
256KB Flash memory
54 Digital I/O pins
15 PWM pins shared with digital I/O
16 Analog inputs (also usable as digital I/O for a total of up to 70 digital I/O)
4 Hardware serial ports
Operates at 5V
USB Compatibility
Because this board uses the original ATmega16U2 USB converter, it does not require any special drivers like the CH340 version. This adds convenience and maximum compatibility with the Arduino IDE, where it will be recognized as Arduino / Genuino Mega 2560.
Though this board costs slightly more, it ensures seamless integration with most systems.
Power Supply
The Mega 2560 R3 operates at 5V, which can be powered via an external supply or through USB. The power source is selected automatically if both are connected.
If you use an external supply, it is recommended to provide between 7V and 12V. Higher voltages may cause the onboard voltage regulator to overheat.
Pin Functions
The included Mega 2560 board pin-out shows the most common pin functions. However, many pins support multiple functions. For full details, please refer to the official Arduino documentation.
Technical Specifications
| Parameter | Value |
|---|---|
| Microcontroller | ATmega2560 |
| Serial to USB Converter | ATmega16U2 |
| Operating Voltage | 5V |
| Recommended Input Voltage | 7–12V |
| Digital I/O Pins | 54 |
| PWM Pins (shared) | 15 |
| Analog Inputs (also digital) | 16 |
| Max Current per I/O Pin | 20mA |
| Max Current from 3.3V Pin | 50mA |
| Flash Memory | 256 KB |
| SRAM | 8 KB |
| EEPROM | 4 KB |
| Clock Speed | 16 MHz |
| Built-in LED | Pin 13 |
| USB Connector Style | USB-B Type Female |
| PCB Dimensions | 102 x 53.4 mm (4 x 2.1″) |
| Full Dimensions | 110 x 53.4 mm (4.3 x 2.1″) |
| Country of Origin | China |
TECHNICAL SPECIFICATIONS
The Pinout of Arduino Mega is shown below:
