Semiconductor memory device, semiconductor memory system and operation method thereof
AssigneeSK hynix Inc.
InventorKwi-Dong KIM
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a semiconductor memory device which performs a refresh operation. The semiconductor memory device may include an information detection unit suitable for detecting a refresh characteristic of a memory cell, a control signal generation unit suitable for generating a refresh control signal having a refresh cycle corresponding to the refresh characteristic, and a refresh driving unit suitable for driving a refresh operation on the memory cell with the refresh cycle in response to the refresh control signal.
Claims20
A semiconductor memory device comprising:
- an information detection unit suitable for detecting a refresh characteristic of a memory cell;
- a control signal generation unit suitable for generating a refresh control signal having a refresh cycle corresponding to the refresh characteristic;
- and
- a refresh driving unit suitable for driving a refresh operation on the memory cell with the refresh cycle in response to the refresh control signal.
An operation method of a semiconductor memory device, comprising:
- detecting a refresh characteristic of a memory cell;
- setting a refresh cycle based on the refresh characteristic;
- and
- performing a refresh operation with the refresh cycle.
A semiconductor memory system comprising:
- a semiconductor memory device comprising a memory cell;
- and
- a controller suitable for controlling a refresh cycle of a refresh operation of the semiconductor memory device based on a refresh characteristic of the memory cell.
Dependencies are inferred from the claim text.