46+ Arduino Mega 2560 Sda Scl Pins Pics. 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. The arduino mega 2560 is a microcontroller board based on the atmega2560 (datasheet).

Introducing Arduino Mega 2560 Usb Micro Controller
Introducing Arduino Mega 2560 Usb Micro Controller from static.wixstatic.com
I would like to attach a mlx90614 ir temperature sensor to each set using the if the isr routine consumes time raised the arduino mega 2560 may crash and will require a restart. 20 (sda) and 21 (scl). Is incompatible use the i2c bus and int2 int3 or.

Due to the many numbers of pins, it is not usually used for common projects but you can find them in much more complex ones like radon detectors, 3d printers.

The arduino mega 2560 is a replacement of the old arduino mega, and so in general reference, it will be called without the '2560' extension. On the arduino website there is an error on the pin mapping table, as follows: 20 (sda) and 21 (scl). Support twi communication using the wire library.