Micron Technology, Inc.
Reserved rows for row-copy operations for semiconductor memory devices and associated methods and systems

Abstract:

Methods, systems, and apparatuses for memory devices (e.g., DRAM) including one or more reserved rows for row-copy operations are described. Such a memory device may include a memory array having a set of rows, where one or more rows of the set are reserved for row-copy operations and hidden (un-addressable) from access commands directed to the memory array. The reserved rows may include a dummy row configured to provide a uniform processing conditions to the memory array. Additionally, or alternatively, the reserved rows may include a buffer row configured to provide a buffer zone in the memory array. In some embodiments, the memory device may perform the row-copy operations in response to detecting row hammering activities. The row-copy operations may mitigate the risks associated with the row hammering activities by routing the row hammering activities to the reserved rows.