| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure the data protecting function of an IC shared by a plurality of users. <P>SOLUTION: This semiconductor circuit is provided with a program memory 11 having a plurality of areas, a data memory 12 having a plurality of areas and means 14 and 15 for permitting access to one or more areas among the plurality of areas of the data memory 12, and for inhibiting access to any other area when a program is read from one or more areas among the plurality of areas of the program memory 11. <P>COPYRIGHT: (C)2007,JPO&INPIT |
