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LPCXpresso546xx battery connection

Question asked by primate on Jun 10, 2018
Latest reply on Jun 13, 2018 by primate

Hello,

I am having a project with an LPCXpresso54628 rev C board utilizing RTC. Therefore I wanted to use a battery on the board to keep the RTC running when the power is switched off. However, when the coin cell 3.6V battery is connected on the J10 connector pin 11 and 16 (pic below, + on pin 11) it seems like it is not running the RTC and when I power on the board the date/time I have set up previously runs from the beginning. 

 

Is there an additional setting I have to make or is the wiring I have made wrong? It seems straightforward but maybe I am overlooking something.

 

Thank you for any help.

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