need eeprom to save values

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  1. - 6th July 2014, 07:21 #1
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    aratti
    aratti is offline Senior Member
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    Default Re: need eeprom to save values

    If you have a spare ADC pin available, than you can place a diode (1N4148 for example) and an electrolitic capacitor on the Vdd line to your pic. With the ADC you will monitor the power supply and when you detect a low ( you will establish the safe value) you will jump to the saving routine and write to eeprom all the necessary value the pic will need at start.

    An example of what I mean can be seen in the attached hand drawing.

    Cheers

    Al.
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