Hello, 

Admission in IIITs is done on the basis of JEE Mains performance and not on the basis of EAMCET. There are different cutoffs for different branches at IIITs all over India. Please note that the cutoffs can vary from year to year depending upon factors like number of seats available, number of students appearing for the examination, difficulty level of paper etc. 

I hope it helps. For any further queries, ask me in the comments.