SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

摘要

PURPOSE: To eliminate chattering generated at a part at which a voltage to be detected and a reference voltage cross each other and generate comparison judgment signal with high precision. CONSTITUTION: A comparison circuit 1 compares the magnitude of a voltage to be detected with that of a reference voltage Vref and outputs its comparison signalϕout to an averaging circuit 2. The averaging circuit 2 averages the comparison signalϕout and outputs that averaged signalϕave to a judgment circuit 3. The judgment circuit 3 compares the magnitude of a predetermined voltage value with that of the averaged signalϕave and outputs that judgment signalϕc.