how to find tad, tcy , tosc , fosc

fasihuddin · Jun 1, 2011

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 · Jun 1, 2011

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 · Jun 6, 2011

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

ckshivaram · Jun 6, 2011

yes .. i did not observe it...

swethamenon · Jan 11, 2013

what is the 'x' stands for?

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is this same for dsPIC??

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