Suppose if user configures the RTC to be in 24hr mode in Control register 1. Then sets a time say Friday, July 16 2008, 22:45:17. Now if the user configures the RTC to be in 12 hr mode, will the IC automatically change the hour to 10 pm?
No, it will need to re-write Hours register (06h) using 12 hr time after writing Control_1 register (00h) to 12 hr mode, then the PCF85063TP will work in 12 hr properly.
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