Jul 10, 2020
03:07 AM
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Jul 10, 2020
03:07 AM
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?
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?
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Aug 03, 2020
11:02 PM
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Aug 03, 2020
11:02 PM
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.
Ciao
Fabio
PS: nice nickname 🙂
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.
Ciao
Fabio
PS: nice nickname 🙂