Advantage and Disadvantage of using Asynchronous Reset

Advantages of using asynchronous reset

 Implementation of asynchronous reset requires less number of gates compared to 

synchronous reset design.

 Asynchronous reset is fast.

 Clocking scheme is not necessary for an asynchronous design. Hence design 

consumes less power. Asynchronous design style is also one of the latest design 

options to achieve low power. Design community is scrathing their head over 

asynchronous design possibilities.

 Disadvantages of using asynchronous reset 

 Metastability problems are main concerns of asynchronous reset scheme (design). 

 Static timing analysis and DFT becomes difficult due to asynchronous reset.