| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable storage data to be searched at high speed in a NAND type flash memory having a program verify function. <P>SOLUTION: For instance, the flash memory reads search data corresponding to the storage data stored in the block, from a top page of each block in a reverse consulting search mode and compares these search data with nonsearch data from a controller to send a block address and a page address of the search data coincident with the nonsearch data back to the controller. At this time, the flash memory checks the coincidence of the search data and the nonsearch data in the manner of comparing "0" data by utilizing the own provided program verify function. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
