SparkFun Forums

[naveenpn]

Can you let me know the voltage for the 128x128 OLEDs? I purchase few of them and stuck up as there is no voltage specified anywhere in the datasheet nor the hook up diagrams. Note there are two different supply pins VCC& VDD, are they of same voltage?

Thanks in advance.

[roach]

I'm no expert, but it looks like (from the SSD1339 datasheet) that there are three voltages to worry about: VDD = 2.4-3.5V, VDDIO = 1.5-3.5V, and VCC = a whopping 7V. Also looks as though there is some sort of voltage booster on board that can supply VCC, if you're looking for a low-power application.

Like I said, I'm not what you'd call an expert, so if anyone else has some better info, Dish!