The level detector compares a first reference voltage with a supply voltage provided to the system, and provides {HEAD ~ output} of a first reset signal indicating that the controller is in an abnormal state in dependence upon {TAIL ~ the comparison} between the first reference voltage and the supply voltage 
The level detector compares a first reference voltage with a supply voltage provided to the system , and provides { HEAD ~ output } of a first reset signal indicating that the controller is in an abnormal state in dependence upon { TAIL ~ the comparison } between the first reference voltage and the supply voltage
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH