Patent ID: 11967352
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. An operating method of a memory device including a plurality of memory cell rows, the operating method comprising:
obtaining a first count value by counting an active command with respect to a first memory cell row from among the plurality of memory cell rows during a row hammer monitor time frame, wherein the first memory cell row has a largest number of accesses during the row hammer monitor time frame;
obtaining a second count value by counting a write command or a read command with respect to the first memory cell row during the row hammer monitor time frame;
determining a type of row hammer of the first memory cell row based on a ratio of the first count value to the second count value; and
adjusting a pre-charge preparation time between an active operation in response to the active command and a pre-charge operation in response to a pre-charge command of the memory device by changing a pre-charge operation time point according to the determined type of row hammer.