Various embodiments comprise methods and apparatuses for selecting a randomly-chosen
seed row from among a stream of available data in a memory system. A refresh operation is …

Apparatuses and methods for generating multiple row hammer address refresh sequences.
An example apparatus may include an address scrambler and a refresh control circuit. The …

An example apparatus according to an aspect of the present disclosure includes an address
scrambler circuit including a sub-wordline scrambler circuit configured to receive a first …

(57) ABSTRACT A semiconductor device according to an aspect of the present invention
has: a plurality of memory cells MC; a plurality of word lines WL each coupled to a …

Apparatuses and methods for selective row refreshes are disclosed herein. An example
apparatus may include a refresh control circuit. The refresh control circuit may be configured …

Apparatuses and methods for targeted row refreshes are disclosed herein. In an example
apparatus, a predecoder receives a target row address and determines whether a target row …

An apparatus includes a first word line, a second word line and a control. The second word
line is contiguous to the first word line. The control circuit includes a first defective address …

Apparatuses and methods for targeted row refreshes are disclosed herein. In an example
apparatus, a predecoder receives a target row address and determines whether a target row …

Apparatuses and methods for selective row refreshes are disclosed herein. An example
apparatus may include a refresh control circuit. The refresh control circuit may be configured …

Apparatuses and methods for distributing row hammer refresh events across a memory
device is disclosed. In one embodiment, the present disclosure is directed to an apparatus …