hi, the single pole double throw switch can be use as reset button in the microcontroller?

 

yes it can be

 

Absolutely! Most common practice is to use a tact switch.

- Raj
http://pic16f628a.blogspot.com/

 

Directly related to this topic is the debouncing of switches.

There is a very good tutorial available here:
http://www.ganssle.com/debouncing.htm