Memory system and operation method for the same

• US 10,514,860 B2
• Filed: 06/28/2016
• Issued: 12/24/2019
• Est. Priority Date: 01/25/2016
• Status: Active Grant

• Current Assignee: SK Hynix Inc.
• Original Assignee: SK Hynix Inc.
• Inventors: Oh, Yoon-Jo
• Primary Examiner(s): Doan, Khoa D
• Application Number:
  US15/195,520
• Publication Number:
  US 20170212709A1
• Time in Patent Office: 1,274 Days
• CPC Class Codes: G06F 3/0604 Improving or facilitating administration, e.g. storage management
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G06F 3/0683 Plurality of storage devices
• CPC Class Codes: G06F 3/0688 Non-volatile semiconductor memory arrays

Abstract

A memory device includes a memory unit comprising one or more storage regions, and a control logic suitable for generating status information representing individualized states for the one or more storage regions.

Claims

1. A memory device, comprising:

a memory unit comprising one or more storage regions; and

a control logic to perform a command operation to the storage regions in response to an operation command transferred from an external device, generating status information including representative status information and detailed status information, after the command operation is performed, in response to a status read command from the external device, and transferring the representative status information to the external device in response to the status read command,

wherein the external device transfers an additional status read command in response to determining that the representative status does not have a first state,

wherein the control logic transfers the detailed status information to the external device in response to the additional status read command from the external device,

wherein the representative status information represents whether the command operation is completed in all of the storage regions or not,

wherein the representative status information has the first state when the operation command is successfully carried out in all of the storage regions,

wherein the detailed status information represents an individual result of the command operation performed on each of the storage regions, and

wherein the detailed status information represents each individualized states of all of the storage regions in which the command operation is performed respectively.

2. The memory device of claim 1, wherein the representative status information has a size of k bytes, and the detailed status information has a size of n bytes, where k and n are natural numbers, and k is smaller than n.

3. The memory device of claim 1, wherein the memory unit includes a plurality of planes as the one or more storage regions, and

wherein the detailed status information represents the individual result of the command operation performed on each of the storage regions correspond to a write result status, and a cache write operation result status.

4. The memory device of claim 1, wherein the representative status information and the detailed status information are hierarchical.

5. A method for operating a memory device with a control logic and a memory unit including one or more storage regions, the method comprising:

performing, by the control logic, a command operation to the one or more storage regions in response to an operation command transferred from an external device and detecting, by the control logic, states of the storage regions in which the command operation is performed;

generating, by the control logic, status information including representative status information and detailed status information in response to a status read command transferred from an external device;

transferring, by the control logic, the representative status information to the external device in response to the status read command; and

additionally transferring, by the control logic, the detailed status information to the external device in response to an additional status read command transferred from the external device only when the representative status information do not have a first state,

wherein the representative status information represents whether the command operation is performed in all the storage regions have the first state or not,

wherein the representative status information has the first state when the operation command is successfully carried out in all of the storage regions, and

wherein the detailed status information represents individual result of the command operation performed on each of the storage regions, respectively.

6. The method of claim 5, wherein the representative status information has a size of k bytes, and the detailed status information has a size of n bytes, where k and n are natural numbers, and k is smaller than the n.

7. The method of claim 5, wherein the memory unit includes a plurality of planes as the one or more storage regions, and wherein the detailed status information represents the individual result of the command operation performed on each of the storage regions correspond to a write result status, and a cache write operation result status.

8. A method for operating a memory system including a host and a memory device including a memory unit comprising one or more storage regions, the method comprising:

transferring, by the host, an operation command to the memory device;

performing, by the memory device, a command operation on the memory device in response to the operation command transferred from the host;

transferring, by the host, a status read command to the memory device to read the representative status information of the memory device after the command operation is performed;

in response to receiving the status read command, generating status information including representative status information and detailed status information;

transferring, by the memory device, the representative status information representing whether the command operation is performed in all the storage regions in which the command operation is performed have a first state or not in response to the status read command;

reading, by the host, the representative status information from the memory device; and

confirming, by the host, the plurality of the states of the memory device based on the representative status information when the representative status information has the first state,

wherein the host transfers an additional status read command to the memory device to read the detailed status information representing each individualized states of all the storage regions in which the command operation is performed only when the representative status information do not have the first state,

wherein the representative status information has the first state represents that the command operation is successfully carried out in all the storage regions, and

wherein each of the individualized states represents an individual result of the command operation performed on each of the storage regions, respectively.

9. The method of claim 8, wherein the memory device includes a plurality of planes, and the plurality of states correspond to respective states of the planes in at least one among a write protection status, a busy/ready status, a write operation result status, and a cache write operation result status.

10. The method of claim 9, wherein the representative status information has a size of k bytes, and the detailed status information has a size of n bytes, where k and n are natural numbers, and k is smaller than n.