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Thread: Power supply detection xmc4300

  1. #1
    New Member New Member AjejeB is on a distinguished road
    Join Date
    Nov 2019

    Power supply detection xmc4300

    I have to monitor the power supply and when this falls, save the data on an external memory. I used a supercap to have enough energy and time to save data (around 1.5s) before uC dies.
    I connected a pin (P2_8 mode input tristate) of uC to a divider on 5V but I can't detect the shutdown.
    Am I missing something?

  2. #2
    Beginner Beginner fabiocer is on a distinguished road
    Join Date
    Jan 2018
    Hallo Ajeje,
    have you resolved the issue?
    If not, could you please post the photo or pdf of the circuit?
    Do you use an interrupt routine?
    I am doing something like that, using an ADC input with a fixed threshold. No need to use any supercap, using the EEPROM emulation in the flash memory.
    Hope this helps.

    PS: nice nickname

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