how to find tad, tcy , tosc , fosc

[fasihuddin]

iam using 8MHZ crystal oscillator.. so i need how to calculate the following things..thnx in advance

1 ) Tad
2) Fosc
3) Tosc
4)Tcy

 

[ckshivaram]

Tad = x/Fosc where x = 2, 8 or 32
Tcy = 1/fosc : Fosc is your input oscillator frequency. So if Fosc = 4MHz, then Tcy = 1 MHz


check this for detailed explaination
PWM = (pr2 + 1) x 4 x Tosc = HEadache!! - All About Circuits Forum
https://www.jimfranklin.info/microchipdatasheets/fact002.pdf

 

[fasihuddin]

if Tcy=1/fosc and fosc =4 then how can the Tcy =1....its Tcy=1/4=0.25

 

[ckshivaram]

yes .. i did not observe it...

 

[swethamenon]

what is the 'x' stands for?

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is this same for dsPIC??