US Patent 11257535 Apparatuses and methods for managing row access counts

Embodiments of the disclosure are drawn to apparatuses and methods for managing access counts of wordlines of a memory. Repeated access to an aggressor wordline may cause increased data degradation in nearby victim wordlines of the memory. The access count of a given wordline may be stored in counter memory cells positioned along that wordline. When the wordline is accessed, the counter memory cells may be read out to refresh circuit, which may determine the access count based on the values stored in the counter memory cells. If the access count is below a threshold, the access count may be incremented and written back to the counter memory cells. If the access count is above the threshold, the refresh circuit may signal that the accessed wordline is an aggressor, and may reset the value of the access count before writing it back to the counter memory cells.