Hello aspirant, first of all congratulations on securing a good score in GATE. We can assess only your chances of of getting into a particular IIT, through the previous year's cut off trends.

Following is the previous year's last cut off for Microelectronics and VLSI branch in Electronics and Communication Engineering:

1. IIT Delhi - 675 (2018)

2. IIT Madras - 838 (2017), 775 (2018)

3. IIT Bombay- 510 (2018)

4. IIT Kharagpur- 785 (2017) 

5. IIT Guwahati - 642 (2017) 

6. IIT Kanpur - 805 (2017)

7. IIT Roorkee - 53.54 marks

8. IIT Indore - 670 ( 2017)

9. IIT BHU, Varanasi - 618 (2017)

10. IIT Mandi - 400 (2017)

11. IIT Gandhinagar - 600 (2017)

12. IISc Bangalore - 914 (2018)

13. IIT Dhanbad - 471 (2017)

So, there are many IITs you can get into, as per your choice of specialisation.

But to get a more accurate prediction, you can use the college predictor using the link given below:

http://bit.ly/2J9S0MN

All the best! 

I hope this helps.