Apparatuses and methods for access count update commands

A method comprising:

• activating a word line;
• receiving an access count value associated with the active word line;
• receiving an access count update (ACU) command code associated with the active word line;
• and
• performing an action on the access count value based on the value of the ACU command code.

A semiconductor device comprising:

• a memory array comprising a word line;
• a first plurality of memory cells, wherein the first plurality of memory cells are counter memory cells configured to store an access count value associated with a number of times the word line has been accessed;
• a second plurality of memory cells, wherein the second plurality of memory cells are access count update (ACU) command memory cells configured to store a value of an ACU command code associated with a type of ACU operation to be performed on the word line when the word line is accessed;
• a refresh control circuit configured to receive a refresh command and perform a refresh operation on the word line;
• a counter control circuit configured to:
• set the value of the ACU command memory cells associated with the word line to a refresh code responsive to the refresh command;
• subtract a decrement value from the access count value associated with the word line responsive to an activation command on the word line when the value of the ACU command memory cells is the refresh code;
• and
• set the value of the ACU command memory cells associated with the word line to a normal code responsive to subtracting the decrement value.