thank you very much dude for your replay ...

but my problem is when learning the data sheet of max6675 i saw in specifecation that frequency maximum to work is 4.3

see datasheet max6675 page 3 : http://datasheets.maxim-ic.com/en/ds/MAX6675.pdf

(so if osc 48 mhz , mxs0 will have 48 mhz speed ?? but normaly it will not exeed 4.3mhz)

i have't problem with programmation but only the oscillation appropriate for max6675

I need help please .......