Mega 2560 R3 Board – Compatible Model High Quality

The Arduino Mega 2560 R3 is a microcontroller board based on the ATmega2560, serving as an enhanced successor to earlier Mega models with added pins like SDA, SCL near AREF, IOREF, and a reserved pin near RESET for shield compatibility.pololu+1​

Core Specifications

It features 54 digital I/O pins (15 PWM-capable), 16 analog inputs, 4 UARTs, a 16 MHz crystal oscillator, USB-B connection, power jack, ICSP header, and reset button, with 5V operating voltage, 7-12V recommended input (6-20V limits). Memory includes 256 KB flash (8 KB bootloader), 8 KB SRAM, and 4 KB EEPROM; per I/O pin current is 40 mA (20-40 mA typical), 3.3V pin at 50 mA. Dimensions are approximately 101.52 x 53.3 mm, weighing 37g.wevolver+3​

Enhancements and Compatibility

R3 revisions ensure backward compatibility with Uno/Duemilanove shields while supporting new ones via IOREF for voltage adaptation. No USB host chip like MAX3421E is standard; it uses ATmega16U2 for USB-serial.thingbits+2​

Applications

Suited for robotics, high I/O projects, and your industrial automation needs like multi-sensor SCADA interfaces or motor control expansions