| 摘要 |
<p>[Problem] To reset, in a short amount of time, a memory-cell array for analyzing an access history. [Solution] The following are provided: a memory-cell array (110) that stores an access history for a memory-cell array that stores user data; and a reset circuit (120, 150, 160, 170) that, in response to a reset signal (RESET), erases the access history stored in the aforementioned memory-cell array (110). Said memory-cell array (110) contains a plurality of word lines (RWL), a plurality of bit lines (RBL), and a plurality of memory cells at the intersections thereof. A row decoder (120) activates a plurality of word lines (RWL), and in the resulting state, a write circuit (150) supplies an initialization value to the bit lines (RBL). This makes it possible to reset an access history in a short amount of time.</p> |
