![]() ![]() The details about current, date and time is stored in its register area as Binary Coded Decimals(BCD). Even a 3V battery can power it for 10 years maintaining an accurate clock and without any external power.ĭS1307 has a memory area of 64 bytes of which the first 8 bytes are reserved as RTC register area and the remaining 56 bytes are allotted as general purpose RAM. Current consumption of this module is nano ampere range. It can operate either in 12 Hour or in 24 Hour format. The module provides details such us second, minute, hour, day of week, day of month, month and year including correction for leap year. Here we are using an RTC module with clock chip DS1307 based on I2C protocol (Two Wire Protocol). RTC modules that comes with DS3231 IC have the provision to set alarms. A Real Time Clock module is basically a time tracking device which gives the current time and date.
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