Abstract: A microcontroller system including a main core and a secondary core and a communication bus for transmitting data and a data memory for storing data, wherein the data memory has a memory area for which the secondary core at least does not have any write rights, and wherein the microcontroller system includes a memory access module and a configuration memory area, wherein a configuration for authorizing writing of data provided by the secondary core to the memory area of the data memory is provided in the configuration memory area, wherein the data are written to the memory area of the data memory by the memory access module. The invention furthermore describes a corresponding method.

Abstract: A microcontroller system including a main core and a secondary core and a communication bus for transmitting data and a data memory for storing data, wherein the data memory has a memory area for which the secondary core at least does not have any write rights, and wherein the microcontroller system includes a memory access module and a configuration memory area, wherein a configuration for authorizing writing of data provided by the secondary core to the memory area of the data memory is provided in the configuration memory area, wherein the data are written to the memory area of the data memory by the memory access module. The invention furthermore describes a corresponding method.