Health scan for content addressable memory

The invention relates to a health scan for content addressable memory. A memory device includes a content addressable memory (CAM) block that stores a plurality of stored search keywords. The memory device further includes control logic to: determine a first number of memory cells in at least one string of the CAM block that store one of the plurality of stored search keywords, the first number of memory cells storing a first logic value; and storing the calculated parity values representing the first number of memory cells in a page cache associated with the CAM block. The control logic: further reads the stored parity data from one or more memory cells in the at least one string, the one or more memory cells connected to one or more additional word lines in the CAM block; and comparing the calculated parity value to the stored parity data to determine whether there is an error in the one of the plurality of stored search keywords in the CAM block. 本申请案涉及用于内容可寻址存储器的健康扫描。一种存储器装置包含内容可寻址存储器CAM块，其存储多个所存储搜索关键字。所述