An I2C device with a twist. ADDR here is set by connecting it to SCL/SDA/GND/VCC (4 bits with one pin), and, INT pin here is called ALERT. By [Pradeep717], CC BY-SA 4.0 How do you avoid address co ...

SCL, a GPIO pin and, of course, GND – in this order. They sure don’t hold a patent to this pinout – a whole lot of hackers, myself included, have been using this pinout for ages on our I2C ...

2- Working of I2C communication protocol I2C makes use of SDA and SCL, which are 2 bi-directional open-drain lines for data communication. Serial Data (SDA) – Data transfer takes place via this pin.

The I2C is a two-wire bidirectional interface standard (SCL is Clock, SDA is Data) for transfer of bytes of information between two or more compliant I2C devices, typically with a microprocessor ...