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Topics - MustardMan

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OLEDs / Supply voltage for KZW series OLED
« on: August 23, 2017, 02:33:50 AM »
Searched but found no answers to my question:

I am designing for a KZW series "5" version because the "3" version is almost impossible to actually buy. The "5" datasheet states the supply voltage range as 4.8 to 5.3 volts, nominal 5.0 volts.
However, the reseller (Digikey in this instance) states the displays will operate from 3v to 5.3 volts...
>> so who is right?
>> have newhavendisplay updated their design but not updated the datasheet (with their last update in March this year!!)?

I am doing a new design to replace an LCD. Reliability is king, and the LCD would fail at high temperature. I *do not* wish to just go with a 3.3 volt supply and *hope it works*. I need to design this thing to always work!!

The (old) LCD is a 5v part, but the micro drives signals at 3v3. The specs for the LCD state this is fine... but not so with the OLED (0.8 x Vcc) for Vih. Thats 4 volts for Vih...

To design properly I either need to drop the supply to 3.3 : but will the display work at this voltage?; or
Level translate the logic signals to the display and run the whole thing at 5v.

As per usual, I'm really under the pump to deliver a design.

Many thanks for taking the time to read, and even better if you can respond.

PS: the "CW" 2.8 volt displays are also available, but the suppliers' (both Digikey and Mouser) stock is worryingly low.

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