In order to control the display, it is crucial to understand the memory map of the OLED display. This makes it possible to connect the display to an Arduino or any other 5V logic microcontroller without requiring a logic level converter. All of these various power requirements are fulfilled by internal charge pump circuitry. The SSD1306 controller operates at 1.65V to 3.3V, while the OLED panel requires a 7V to 15V supply voltage. The display uses about 20mA on average, though this varies depending on how much of the display is lit. The absence of a backlight reduces power consumption significantly. This explains the display’s high contrast, extremely wide viewing angle, and ability to display deep black levels. PowerĪn OLED display, unlike a character LCD display, does not require a backlight because it generates its own light. Because it is a trade-off between pins and speed, the choice is entirely yours. I2C, on the other hand, requires only two pins and can be shared with other I2C peripherals. SPI is faster than I2C in general, but it requires more I/O pins.
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