With typical ordnance systems, for example, grenades, a user must decide to explode the ordnance before the actual device is thrown. The microcontroller integrated circuit provides three-phase control signals according to a space vector control method. Each block of the at least one row is essentially delimited by two longitudinal sides in a circumferential direction of the tire and two transverse sides with respect to a predetermined rolling direction of the tire. So the umbrella can prevent from accidentally opened in use that obtains a utilized effect. The interconnect structure hole is filled with polysilicon, the surface of the substrate assembly is planarized, and the nitride layer is removed. By covering the edge surface of the conductor, a metallized contact structure is provided that can be reliably fabricated using zero-overlap design tolerances.