1. An electronic controlling device comprising: a plurality of clusters each comprising a plurality of modules each performing specific functions within one of a plurality of module modes on reception of a corresponding module mode request signal; a device to distribute one of a plurality of system mode request signals; and a plurality of central system control units each associated with one of the plurality of clusters, each comprising a programmable register, and each configured to select, in reaction to the distributed system mode request signal, a respective one of a plurality of system modes and operate the plurality of modules of the respective cluster in the selected one of the plurality of system modes by distributing, in a first state of the respective programmable register, a signal different from the distributed system mode request signal, and defined by the first state of the register as the corresponding module mode request signal to the plurality of modules of the respective cluster, and by forwarding, in a second state of the respective programmable register, a signal corresponding to the distributed system mode request signal, and not defined by the second state of the register as module emergency mode request signal to the plurality of modules of the respective cluster, and by performing specific functions within a one module mode of the plurality of module modes on reception of the corresponding module mode request to the plurality of modules of the respective cluster, wherein the plurality of system mode request signals comprise power down requests and reset requests and wherein a plurality of debug module request signals comprising suspend requests, and by prioritizing concurrent ones of the plurality of system mode requests and/or the plurality of debug module request signals for the plurality of modules or for the plurality of modules independently.