The OLED Driver IC is SSD1306, a single-chip CMOS OLED/PLED driver with controller for organic / polymer light emitting diode dot-matrix graphic display system.
The module has only 4 pins, two of them are the supply pins, while the others are SCL and SDA, I2C protocol pins, which will be used to control the display.
This OLED display module is full compatible with Arduino and has an input voltage range between 3.3V and 6V and it need less than 10 mA current, so it can be connected with 3.3V or 5V pins.
DRIVER CHIP: SSD1306
RESOLUTION: 128 *64
INTERFACE: IIC, 1-GND, 2-VDD, 3-SCk, 4-SDA
VISIBLE ANGLE >160°
OPERATING TEMP. (℃):-20~70
STORAGE TEMP. (℃):-30~80
OPERATING VOLTAGE: 3.3V / 5V