A configurable integrated circuit includes at least one general purpose inputoutput interface module, a first functional module, and a second functional module. Subsequently, an outer edge of an Al2O3 film is made retreat to be smaller than that of a gate electrode by performing isotropic etching of the Al2O3 film, using a solution of sulfuric acid with hydrogen peroxide. This is done, for example, from a given trust anchor. A decorative layer can be attached to the magnetic layer. The communication apparatus functioning as a master device establishes the network in communication parameter configuration mode between the communication apparatuses participating in the network, and configures communication parameters. The destination node includes a device for receiving a first data telegram, a device for storing the data of the first data telegram and an assigned timer value, a device for receiving a second data telegram and a device for replacing the stored data of the first data telegram, wherein the stored data of the first data telegram is replaced with data of the second data telegram.