| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent miswriting by radio in a relatively easy way in a semiconductor device which is capable of data communication (reception/transmission) through wireless communication, in particular, in an RFID tag provided with an OTP memory or a write-once memory, alternatively to prevent data from being tampered, or alternately, to inhibit access to a memory in a relatively easy way and to inhibit reading of information in a semiconductor device which is capable of data communication (reception/transmission) through wireless communication. <P>SOLUTION: In a semiconductor device including a control circuit and an OTP memory, a memory 380 includes at least sectors 382, 382a and 382b for preventing additional writing and information sectors 381, 381a and 381b. When data for preventing additional writing are written to the sectors for preventing additional writing and information is written to the information sector which is electrically connected to the sectors for preventing additional writing, additional writing to the information sector to which the information is written is impossible. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
