Nan Ya Technology Corporation

William Wu Shen

Hao-Huan Hsu

Tien Te Huang

Chung Hsun Lee

A memory device and a control method of the memory device are provided. The memory device includes a memory array and a control logic circuit. The memory array includes a plurality of memory cell rows. The control logic circuit perform an access on the memory array. The control logic circuit counts a number of the access performed on the memory cell rows to generate a plurality of count values corresponding to the memory cell rows. When a count value corresponding to an accessed memory cell row among the memory cell rows is larger than or equal to a threshold value generated with random number corresponding to the accessed memory cell row, the control logic circuit arranges the memory cell rows nearby the accessed memory cell row into a mitigation operation.

Memory device and control method for controlling memory device

A memory device and a control method of the memory device are provided. The control method includes: providing access count values to memory rows of the memory device respectively when the memory row are accessed; performing a refresh operation on the memory rows sequentially and resetting the access count values sequentially in response to a refresh command; receiving an interrupt command to interrupt the refresh operation, wherein the refresh operation is interrupted when performing on an interrupt memory row; completing the refresh operation on the interrupt memory row; and recharging at least one adjacent memory row next to the interrupt memory row.

Memory device and control method for performing row hammer protection

A memory device and a control method of the memory device are provided. The memory device includes a memory array and a control logic circuit. The memory array includes memory cell rows. The control logic circuit includes a counter and a reset circuit. The counter counts a number of an access performed on the memory cell rows to generate a count value corresponding to the accessed memory cell row among the memory cell rows, and sets the count value to a random value when the count value is equal to the predetermined value and when the access is performed. The reset circuit resets the count value to a predetermined value in responses to a refresh command. When the count value reaches to the threshold value, the control logic circuit arranges memory cell rows nearby the accessed memory cell row into a mitigation operation.

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Taipei, Taiwan

William Wu Shen