MICROCONTROLLER UNIT (MCU) COMPRISING SELECTIVELY CONFIGURABLE COMPONENTS

The invention relates to a microcontroller assembly comprising: - a chip having a microcontroller unit (MCU) provided thereon as an integrated circuit, said MCU comprising: - one or more resource components (resource features) each having a configuration, which can each be switched between at least two different possible configurations; and - a resource manager (feature enable controller) that is configured for receiving a configuration string (feature enable pattern) and for switching the one or more resource components into a configuration corresponding to the configuration string; characterised by: - a secondary chip, also included in the microcontroller arrangement and electrically coupled to the chip, having a secure element (SE) provided thereon as an integrated circuit; - and a secure channel infrastructure, configured for operating a secure channel (CH) between the resource manager (RM) and the secure element (SE), such that the resource manager (RM) is exclusively under the control of the secure element (SE).