APPARATUS FOR CONTROLLING POWER AND SIGNALS IN ELECTRONIC EQUIPMENT HAVING CONTROL UNIT AND SUBORDINATE MODULE

摘要

PURPOSE: An apparatus for controlling power and signals in an electronic equipment having a control unit and a subordinate module is provided to reduce a leakage current generated in an apparatus for controlling power and signals, thereby reducing power consumption and increasing time of using batteries. CONSTITUTION: A control unit(2) and a subordinate module(4) are connected by a signal control line(6) applying an operation control signal to the subordinate module(4) and a power control line(8) applying a power control signal. Resistances let a rate current flow through the signal control line(6) in the state that the subordinate module(4) is turned on, while minimizing a leakage current. Capacitances are connected with the signal control line and have capacitance existing on the signal control line and existing inside the subordinate module(4). A residual current component removing circuit(12) discharges residual current components charged in the capacitors to prevent distortion of the signals applied from the control unit(2) to the subordinate module(4).