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8 years ago.
which pin can be used to back up RTC similar to VB pin for RTC back-up current in LPC1768?
I am using STM nulceo 152RE
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Last updated: 20 Apr 2021
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1 Answer
8 years ago.
Pin 33 on the Morpho connectors, but check the data sheet some of the STM's don't support RTC back up and this pin is used for the VLCD supply. You will also need to fit the 32KHz crystal and loading capacitors.
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