# US 12,009,042 B2 · Executing a refresh operation in a memory sub-system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,009,042 B2 - Document ID: US12009042B2 - Status: Granted - Kind: B2 - Application number: 17/980,234 - Filed: 2022-11-03 - Published: 2023-02-23 - Granted: 2024-06-11 - Earliest claimed: 2020-10-30 - Assignees: Micron Technology, Inc. - Applicants: Micron Technology, Inc. - Inventors: Vamsi Pavan Rayaprolu; Kishore Kumar Muchherla; Ashutosh Malshe; Gianni S. Alsasua; Harish R. Singidi - Web page: https://patentgrep.com/patent/US12009042B2 ## CPC - G11C 29/42: using error correcting codes [ECC] or parity check - G06F 11/076: {by exceeding a count or rate limit, e.g. word- or bit count limit} - G06F 11/1048: {using arrangements adapted for a specific error detection or correction feature} - G06F 11/3037: {where the computing system component is a memory, e.g. virtual memory, cache (accessing, addressing or allocating within memory systems or architectures G06F12/00; checking stores for correct operation G11C29/00)} - G06F 12/0246: {in block erasable memory, e.g. flash memory} - G06F 12/0882: Page mode - G11C 29/028: {with adaption or trimming of parameters} - G11C 29/10: Test algorithms, e.g. memory scan [MScan] algorithms; Test patterns, e.g. checkerboard patterns - G11C 29/32: Serial access; Scan testing - G11C 29/44: Indication or identification of errors, e.g. for repair - G06F 2212/1016: Performance improvement - G06F 2212/1032: Reliability improvement, data loss prevention, degraded operation etc - G06F 2212/7206: Reconfiguration of flash memory system - G11C: STATIC STORES (semiconductor memory devices H10B) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A trigger rate associated with a scan operation of a set of memory pages of a data block is identified. The trigger rate is compared to a threshold rate to determine that a condition is satisfied. In response to satisfying the condition, a refresh operation is executed on the set of memory pages of the data block. ## Claims ### Claim 1 A method comprising: executing a scan operation to identify a trigger rate associated with a set of memory pages of a data block of a memory device, wherein the trigger rate represents a number of the set of memory pages that fail an error management operation; comparing the trigger rate to a threshold trigger rate to determine that a condition is satisfied; and in response to satisfying the condition, executing, by a processing device, a refresh operation on the set of memory pages of the data block. ### Claim 2 (depends on 1) The method of claim 1, wherein the condition is satisfied when the trigger rate exceeds the threshold trigger rate. ### Claim 3 (depends on 1) The method of claim 1, wherein the trigger rate represents a ratio of the number of the set of memory pages that fail the error management operation in view of a total number of the set of memory pages. ### Claim 4 (depends on 1) The method of claim 1, wherein executing the refresh operation further comprises reading data of the set of memory pages of the data block. ### Claim 5 (depends on 4) The method of claim 4, wherein executing the refresh operation further comprises executing a further error management operation on the data to generate corrected data. ### Claim 6 (depends on 5) The method of claim 5, wherein executing the refresh operation comprises programming the corrected data to another data block. ### Claim 7 (depends on 1) The method of claim 1, wherein the threshold trigger rate comprises an adjustable threshold trigger rate. ### Claim 8 (depends on 7) The method of claim 7, wherein the adjustable threshold trigger rate is adjusted in view of a workload type associated with the data block. ### Claim 9 (depends on 8) The method of claim 8, wherein the workload type comprises one of a uniform workload type or a non-uniform workload type. ### Claim 10 (depends on 7) The method of claim 7, wherein the adjustable threshold trigger rate is adjusted in view of a soft correction process. ### Claim 11 A system comprising: a memory device; and a processing device, operatively coupled with the memory device, to perform operations comprising: executing a scan operation to identify a trigger rate associated with a set of memory pages of a data block of the memory device, wherein the trigger rate represents a number of the set of memory pages that fail an error management operation; comparing the trigger rate to a threshold trigger rate to determine that a condition is satisfied; and in response to satisfying the condition, executing a refresh operation on the set of memory pages of the data block. ### Claim 12 (depends on 11) The system of claim 11, wherein the condition is satisfied when the trigger rate exceeds the threshold trigger rate. ### Claim 13 (depends on 11) The system of claim 11, wherein the trigger rate represents a ratio of the number of the set of memory pages that fail the error management operation in view of a total number of the set of memory pages. ### Claim 14 (depends on 11) The system of claim 11, wherein executing the refresh operation further comprises reading data of the set of memory pages of the data block. ### Claim 15 (depends on 14) The system of claim 14, wherein executing the refresh operation further comprises executing a further error management operation on the data to generate corrected data. ### Claim 16 (depends on 15) The system of claim 15, wherein executing the refresh operation comprises programming the corrected data to another data block. ### Claim 17 (depends on 11) The system of claim 11, wherein the threshold trigger rate comprises an adjustable threshold trigger rate. ### Claim 18 (depends on 17) The system of claim 17, wherein the adjustable threshold trigger rate is adjusted in view of a workload type associated with the data block. ### Claim 19 (depends on 18) The system of claim 18, wherein the workload type comprises one of a uniform workload type or a non-uniform workload type. ### Claim 20 (depends on 17) The system of claim 17, wherein the adjustable threshold trigger rate is adjusted in view of a soft correction process.