A method is for manufacturing a microelectromechanical system resonator
having a semiconductor device and a microelectromechanical system
structure unit formed on a substrate. The method includes: forming a
lower electrode of an oxide-nitride-oxide capacitor unit included in the
semiconductor device using a first silicon layer; forming, using a second
silicon layer, a substructure of the microelectromechanical system
structure unit and an upper electrode of the oxide-nitride-oxide
capacitor unit included in the semiconductor device; and forming, using a
third silicon layer, a superstructure of the microelectromechanical
system structure unit and a gate electrode of a complementary metal oxide
semiconductor circuit unit included in the semiconductor device.