| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductor device which realizes stabilization of power supply by suppressing power consumption as much as possible. <P>SOLUTION: This semiconductor device comprises a central processing circuit including a plurality of units and a control circuit; an antenna; a power supply circuit; and a clock generation circuit. The control circuit outputs, based on a power supply signal including information of the power supply by the antenna or a load signal determined from respective event signals supplied from the plurality of units, one or more selected from a first control signal for stopping the power to be supplied to one or more selected from the plurality of units, a second control signal for changing the power supply potential to be supplied to one or more selected from the plurality of units, and a third control signal for stopping the supply of clock signal to one or more selected from the plurality of units to either one or both of the power supply circuit and the clock generation circuit. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
