Patent ID: 8902600

Claim:
An integrated circuit comprising: a substrate; a plurality of metallization layers on said substrate, and at least one insulation layer separating said plurality of metallization layers; and an electrically activatable mechanical anti-rollback device on said substrate, and comprising a housing including at least one wall, a first body in said housing, and a thermally deformable assembly coupled to the at least one wall of said housing and being in a first metallization layer of said plurality of metallization layers, said thermally deformable assembly having an initial configuration and being thermally deformable to at least one additional configuration, with each configuration corresponding to a position of said anti-rollback device, said first body and said thermally deformable assembly being mutually arranged so that said thermally deformable assembly is separated from said first body in the initial configuration, said thermally deformable assembly comprising a contact part making contact with said first body in the at least one additional configuration to prevent a rollback to the initial configuration when a temperature associated with the at least one additional configuration decreases, activation circuitry configured to generate an electrical current flow through said thermally deformable assembly to increase temperature thereof so that said thermally deformable assembly changes from the initial configuration to the at least one additional configuration, and detector circuitry configured to detect position of said thermally deformable assembly, and comprising a variable capacitance device comprising a first electrode coupled to said thermally deformable assembly and at least one second electrode in said housing.