Hello @Aditya1
The difference between 02 and 03 is as follows:
1) 3.0 V to 5.5 V power supply (CLRC66302)
2.5 V to 5.5 V power supply (CLRC66303)
2) The version CLRC66303 offers a more flexible configuration for Low-Power Card detection compared to the CLRC66301 and CLRC66302 with the new register LPCD_OPTIONS. In addition, the CLRC66303 offers new additional settings for the Load Protocol which fit very well to smaller antennas.
So, based on the above, I think you can decide whether your code needs to be modified or not.
As my understanding is that it does not involve the above different points and should not need to be modified.
BR
kelly