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What is the supply voltage and pull up voltage for I2C bus SDA and SCL  in EDID EEPROM used in VGA monitors ?

Question asked by tendulkar.selvam on Jan 24, 2017
Latest reply on Jan 24, 2017 by GuenterL

Dear All,

 

Issue : What is the supply voltage and pull up voltage for I2C bus, SDA and SCL  in EDID EEPROM used in VGA monitors ?

 

I am designing one VGA input to differential R,G,B signal ouput module, in that I am using one I2C EEPROM to store the EDID information of the VGA monitors.

Some times i write the EDID data to EEPROM using micro controller(another module which is +3.3V compatible outputs) and some times i connect it to directly VGA connector.

 

Now the issue is, is it ok to use +3.3V pull up & supply voltage or +5V pull up & supply volatage for SDA bus in I2C and Vcc ?

 

Regards,

Tendulkar S

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