AVR-Chat

--- In AVR-Chat@yahoogroups.com, "koorosh" <koorosh01@y...> wrote:
> hi dears.
> i am a new avr user that i should make a digital clock and calender 
> for my project.
> at the first,i need to make 1 second delay.i have to use timer 
> counters but i could make it only for 1 milisecond!
> should i use a nother crystal(32.768KH) for it? 
> please help me for do this.
> thnx alot
> bye

Whitch Controller? Frequenc??? 
- You can use a 8Mhz Crystal, with a prescale of 256 and a Compare-
Match Interrupt by a countingvalue of 31249 you get an Interrupt every 
second.

73, Florian