| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a non-contact IC card having a power supply circuit by which power supply is stably received even when power consumption is fluctuated after a power supply object circuit is shifted to a normal operation. <P>SOLUTION: The non-contact IC card is provided with an antenna 11 which receives electromagnetic waves, a rectification circuit 12 which rectifies AC current generated by the electromagnetic waves received by the antenna 11, a regulator 13 which makes DC voltage VIN outputted by the rectification circuit 12 into constant voltage, a control circuit 15 which receives power supply from the regulator 13 to execute predetermined functional processing and a voltage detection circuit 14 which detects the output voltage VIN of the rectification circuit 12. The voltage detection circuit 14 executes a reset operation or a reset releasing operation to the control circuit 15 based on a detection result of the output voltage VIN of the rectification circuit 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
