Memory system and method of operating the same
AssigneeSK hynix Inc.
InventorsMin Kyu PARK, Soo Jin WI, Deung Kak YOO
Life of this patent
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Abstract
Provided herein may be a memory system and a method of operating the same. The memory system may include a controller configured to generate and output a first command for a program operation in response to a request from a host, and generate and output a second command for a read scan operation when the memory system is powered on after an abnormal power-off is detected; and a semiconductor memory device configured to perform the program operation on a page basis in response to the first command, perform the read scan operation in response to the second command, and perform a single read operation per page using a set read voltage during the read scan operation.
Claims20
A memory system comprising:
- a controller configured to generate and output a first command for a program operation in response to a request from a host, and generate and output a second command for a read scan operation when the memory system is powered on after an abnormal power-off is detected;
- and
- a semiconductor memory device configured to perform the program operation on a page basis in response to the first command, perform the read scan operation in response to the second command, and perform a single read operation per page using a set read voltage during the read scan operation.
A memory system comprising:
- a semiconductor memory device configured to perform a program operation on a page basis in response to a first command, and perform a read scan operation in response to a second command when the memory system is powered on after an abnormal power-off;
- a sudden power-off sensor configured to sense the abnormal power-off and the power-on;
- and
- a command generator configured to generate and output the first command for the program operation in response to a request from a host, and generate and output the second command when the power-on is sensed by the sudden power-off sensor after the abnormal power-off,
- wherein the semiconductor memory device performs the read scan operation using a set read voltage.
A method of operating a memory system, comprising:
- programming random data to a selected memory block on a page basis;
- performing a read scan operation when the memory system is powered on after a sudden power-off is sensed, the read scan operation comprising searching for a first erase page of pages of the selected memory block using a set read voltage;
- and
- re-performing, from the searched first erase page, the programming interrupted when the sudden power-off occurred.
Dependencies are inferred from the claim text.