I2C protocol pin status

will I2C bus work in power down mode? i am using RTC for my project. so i have to keep it running in any mode of controller and wants to wake up the controller after certain time by RTC. So is it possible to do so?

lets suppose i wants to send the data through UART pin after every 1hour. so i need RTC to calculate that time and when it reach at that time it has to generate interrupt to controller so controller will wake up and sends the data throgh UART pins.Is this arangement possible?

i am only concern that wheather I2C pin of atmega328P will work even in power down mode or not?
or am i really suppose to concern about that?because i will use backup battery for RTC. so will it capable to generate interrupt after reaching certain time interval value?

and can i use PCF8563 RTC chip instead of DS1307??????????

So is it possible to do so?

Yes, as long as you turn everything back on when you wake up.

Is this arangement possible?

Same answer.

i am only concern that wheather I2C pin of atmega328P will work even in power down mode or not?

They will not. You can't reasonably expect them to work while the Arduino is taking a nap.

so will it capable to generate interrupt after reaching certain time interval value?

Some RTC can generate an (external) interrupt at specific times. Some can not.

and can i use PCF8563 RTC chip instead of DS1307?

You have my permission to do so.

thanks buddy i will work on that and if u curious weather RTC work properly or not i ll tell u after experimentation.