Integrated microprocessor system for safety-critical control systems

Integrated Microprocessor system (1) for safety-critical control, comprising at least two microprocessor system modules (2, 3), which in each case at least one processor core (21, 31), a write-read memory (22, 32) and a memory protection unit (23, 33), and a Only memory (4), of the cores (21, 31) of the microprocessor system modules (2, 3) is associated in common, wherein each of the microprocessor system modules (2, 3) a main program and a monitoring program executes, which in particular comprise several sub-programs, and the respective Memory protection unit (23, 33) to the main program and the monitoring program a separate address area (A, B) of the write-read memory (22, 32) allocates, wherein the memory protection unit (23, 33) illicit Memory accesses one of the programs on the separate address space (A, B) of another program recognizes.