NHD0420-CW-AY3 not working (display blank dark)


1 comment

  • Engineering Support
    Community moderator

    Are you using our example code or your own to run the NHD-0420CW-AY3 display in I2C?

    When you say factory default mode is 0x00, are you referring to the Function Selection A command value? Or are you referring to another command / pin? 

    The Function Selection A command - which is used to enable/disable the internal regulator is set to 0x5C (internal regulator enabled) at power on request so this would be the default. 


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