i have to work on 3.3 V in my project but i gives 5 V to psoc-4. is that any configuration in psoc-4 which takes 5V and work on 3.3V ???
Not quite clear for me what you mean.
Powering the board (which board?) with 5V but running the PSoC4 on 3.3V?
Supplying VDDA with 3.3V the rest running on 5V?