Pin names
I2C data line (SDA) - Arduino Uno pin A4
I2C clock line (SCL) - Arduino Uno pin A5
Unused (for SPI mode, not supported)
Unused (for SPI mode, not supported)
Unused (for SPI mode, not supported)
3.3V regulated output
Ground
Supply voltage
DC, RST and CS are for SPI mode. The SSD1306 simulation only supports I2C mode, so these pins are not functional.
Attributes
I2C address of the display