A semiconductor device which is capable of avoiding an increase in pattern ratio and allowing wiring dummy patterns to improve global steps developed by CMP upon insertion of the dummy patterns which are different from an actual wiring pattern. Hot spots within the memory subsystem, caused by operating the DIMMsDRAMs above predeterminedpreset threshold powertemperature values for operating a DIMM andor a DRAM, are avoidedcontrolled by logic within the memory controller. The transaction terminal may include a motion detector generating a motion detection signal that serves as a trigger signal.