| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductor storage device advantageous for preventing the unauthorized use of confidential information. <P>SOLUTION: The semiconductor storage device includes: a cell array 11 having at least a normal area accessible from the outside, a confidential area having confidential information to which access from the outside is restricted and which is used for authentication recorded therein, and a specific area having disclosed information which is accessible from the outside and corresponds to the confidential information recorded therein; an authentication circuit 15 for performing authentication with the outside; and a command sequence control circuit for controlling operations of the cell array and the authentication circuit according to a sequence to be input from the outside. When first command (Security Prefix)-second command (00h)-address (ADD)-third command (30h) are input from the outside to the command sequence control circuit, the command sequence control circuit receives a data reading request from the cell array. <P>COPYRIGHT: (C)2013,JPO&INPIT |
