CIRCUIT DEVICE HAVING MANY ELECTRONIC CIRCUIT COMPONENTS

摘要

PURPOSE: A circuit device is provided to achieve independent operation of external clock supply without considerably increasing circuit expenditure or region necessary condition of the device by automatically resetting a selected circuit component to a logical zero value. CONSTITUTION: The device comprises many electronic circuit components. An operation state of the component is converted into an erasure state by a predetermined control or data signal which can be applied to each of the components. Data content of the components has a logic zero value in the erasure state. Each of the components is allocated to each open stage of a selection circuit. An open signal outputted by a final open stage of the selection circuit is applied to an input a just previous open stage in a feedback loop.