Started by RazZziel, November 28, 2012, 11:39:22 am
QuoteA 32-bit second counter has enough resolution to count up to 136 years with one-second increments. TheRTC can continue to count time as long as a voltage is applied to the BATT pin, irrespective of whetherthe rest of the chip is powered up. The normal digital reset has no effect on the master RTC registerslocated in the crystal power and clock domain. A special first-power-on reset establishes the default valueof the master RTC registers when a voltage is first applied to the BATT pin (battery insertion).