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I have a 1.5 OLED SSD1309 display with ZIF connector. Based on a interfacing scheme from the seller I made a scheme that should connect this display with STM32 based MCU via i2c. Interfacing scheme is based on AT MCU, so I wonder can this apply to any type of MCU?

SSD1309 scheme

Here is the link I used as a reference: https://www.buydisplay.com/download/interfacing/ER-OLED015-2_Interfacing.pdf (I also don't understand this VCC +12.5V, do I have to make add 3V to 12.5V regulator based circuit as well?)

I also found this: https://github.com/afiskon/stm32-ssd1306 It says that this library is working with SSD1309 as well, so I would use it for this if all this above make sense and can work.

Does someone have experience with this type of connecting OLED displays with MCU, because almost all I could find are already soldered boards with display on it.

Ademir Omercehajic
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  • Yes, the i2c bus is pretty much a standard. I believe that 12.5v is a power for backlight or so. – 0andriy Apr 17 '21 at 09:27
  • Why does it need backlight if it's OLED display? Not really sure do I have to implement this 12.5V to the circuit, or I can just connect that pin to 3.3V as well – Ademir Omercehajic Apr 17 '21 at 18:57
  • It maybe something else. I have SSD1306 based display and it works from +3.3v. I don't see any pin for high voltage like 12.5v there. – 0andriy Apr 17 '21 at 19:27
  • Yes, I know you don't really need those 12.5V. Just want to be sure that this scheme I made will work once I connect it with STM32 MCU – Ademir Omercehajic Apr 19 '21 at 08:23

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