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by y_runwal
Wed Sep 25, 2024 6:45 am
Forum: General Discussion
Topic: RTC battery supply
Replies: 22
Views: 50034

Re: RTC battery supply

Did a few tests about this. The issue seems to be that internal CPU regulator can also take power from VDD_RTC pin, meaning that if all the power rails except VDD_RTC are powered off, CPU can still keep running; this may cause issues if the CPU tries to read instructions or data from Flash, which w...