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Topics - jglledo

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OLEDs / Problem with NHD 0420CW AY3 Display
« on: October 27, 2015, 05:37:53 AM »
Hi,
I am currently working with the NHD 0420CW AY3 Display using I2C protocol. I am receiving ACK responses, but in spite of that my display still remains turned off.
I have tried with the init sequence listed in the datasheet example.

I have some doubts about some pin connections, when using 5volts mode, I write below my connection scheme:
 - 1 (VSS) -->  Ground
 - 2 (VDD) --> 5 volts
 - 3 (REG_VDD) --> 5 volts
 - SA0  --> Ground
 - 5 to 6 Not connected
 - 7 --> SCL
 - 8 and 9 tied together ---> SDA
 -10 to 15 Not connected
 -16 (RES) --> 5 volts
 -17 -19 ---> Ground - 5 volts - Ground (I2C Mode)
 -20 --> Ground

**Should I use any pull up resistor for SDA /SCL? (which value) ?

Any suggestion?

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