Integrated microprocessor system for safety-critical control systems including a main program and a monitoring program stored in a memory device

An integrated microprocessor system for safety-critical control systems, comprising:

• at least two microprocessor system modules each comprising at least one processor core, a read/write memory and a memory protection unit;
• and
• a read-only memory which is jointly assigned to the processor cores of the microprocessor system modules,
• wherein each of the microprocessor system modules executes a main program and a monitoring program, and the respective memory protection unit assigns an address area A of the read/write memory to the main program and an address area B of the read/write memory to the monitoring program, address areas A and B being separate address areas with respect to each other in the same read/write memory, and
• wherein the memory protection unit detects unauthorized memory access operations by at least one of the main program attempting to access area B of the read/write memory and the monitoring program attempting to access area A of the read/write memory.