Power Requirements
OLED Power Requirements
The OLED and driver require a 3.3V power supply and 3.3V logic levels for communication. The
power requirements depend a little on how much of the display is lit but on average the display
uses about 20mA from the 3.3V supply. Built into the OLED driver is a simple switch-cap charge
pump that turns 3.3v-5v into a high voltage drive for the OLEDs. You can run the entire display
off of one 3.3V supply or use 3.3V for the chip power and up to 4.5V for the OLED charge pump
or 3.3V for the chip power and a 7-9V supply directly into the OLED high voltage pin.
5V- ready 128x64 and 128x32 OLEDs
Unless you have the older v1 128x64 OLED, you can rest assured that your OLED is 5V ready.
All 1.3" 128x64 and the small 128x32 SPI and I2C are 5V ready, if you have a v2 0.96" 128x64
OLED with the 5V ready mark on the front, it's also 5V safe. If you have an older 0.96" OLED
(see below) you'll need to take extra care when wiring it to a 5V micontroller. The OLED is
designed to be 5V compatible so you can power it with 3-5V and the onboard regulator will take
care of the rest.
All OLEDs are safe to use with 3.3V logic and power.
Simply connect GND to ground, and Vin to a 3 to 5V power supply. There will be a 3.3V output
on the 3Vo pin in case you want a regulated 3.3V supply for something else.
0.96" 128x64 OLED
The older 0.96" 128x64 OLED is a little more complex to get running as it is not 5V compatible
by default, so you have to provide it with 3.3V power.
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Industries
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