LCD Low Power


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  1. #1
    Join Date
    Jun 2009
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    Default Re: LCD Low Power

    I will try setting the output pins high, that might do the trick.

  2. #2
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    Jun 2009
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    Default Re: LCD Low Power

    I realized that I had, long ago, soldered a pot to the back of the lcd to control the contrast. Removing that and setting the pins controlling the lcd to high prior to the sleep command got me down to about 0.5mA. I also found that pulling the ground connection to the lcd dropped the current down to about 0.03uA… sounds odd, but that's the truth. So I used a spare pin to provide a ground to both the contrast and lcd ground connectin upon waking, and set it high prior to sleeping. Works great.

    Thanks’ to both of you for the help.

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