There is provided a method of manufacturing a semiconductor device that can reduce the number of processes, and decrease contact resistance between plugs. This prevents another application from using different filtering drivers and keyboard hooks to acquire the user input and thus enhances the security for a user input. The process can further include the steps of providing a strip of multiple pouch assemblies and cutting a single pouch assembly from the strip. The valve seat assembly is secured within a housing of the pressure relief valve in facing relationship to a moveable piston assembly which is biased against the seal in a normally closed position. The tunneling oxide is positioned upon a first surface of the substrate, the silicide nanocrystal floating gate is positioned upon the tunneling oxide, and the control oxide positioned upon the nanocrystal floating gate.