PIC microcontroller EEPROM problem-EEWORLD

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1. IDE online debugging, VIEW->EEPROM does not see any changes: it may not be refreshed; need to reset and then see
2. Power-off writing is incorrect:

it is necessary to ensure that the VCC voltage is stable enough before the EEPROM writing is completed. A few suggestions:
1) Increase the capacity of the energy storage capacitor at the front end of the VCC regulator;
2) Detect the power-off event as soon as possible;
3) Cut off the path that consumes the energy of the energy storage capacitor as soon as possible;
4) Enter the process of saving parameters as soon as possible.

1) It takes time to write to EEPROM, usually 4~10ms
2) If a power outage occurs during this time, the writing may be wrong
3) The solution is to use a capacitor to maintain a certain writing time after detecting the power outage.

Reference address：PIC microcontroller EEPROM problem

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