US 12,333,154 B2
Reducing bit error rate in memory devices
Tingjun Xie, Milpitas, CA (US); Yang Liu, San Jose, CA (US); Jiangli Zhu, San Jose, CA (US); Juane Li, Milpitas, CA (US); and Aaron Lee, Sunnyvale, CA (US)
Assigned to Micron Technology, Inc., Boise, ID (US)
Filed by Micron Technology, Inc., Boise, ID (US)
Filed on Jul. 6, 2023, as Appl. No. 18/219,023.
Claims priority of provisional application 63/402,406, filed on Aug. 30, 2022.
Prior Publication US 2024/0069748 A1, Feb. 29, 2024
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0619 (2013.01) [G06F 3/064 (2013.01); G06F 3/0653 (2013.01); G06F 3/0679 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
identifying, by a processing device, among a plurality of wordlines of a memory device, a first subset of ordinary wordlines and a second subset of mandatory wordlines, wherein a mandatory wordline of the second subset exhibits a first value of a data state metric that exceeds a second value of the data state metric exhibited by an ordinary wordline of the first subset;
performing a first media scan operation with respect to a plurality of memory pages addressable by the ordinary wordline, wherein each page of the plurality of memory pages is contained by a respective management unit, and wherein an order of media scan operations is based on a number of mandatory wordlines and ordinary wordlines associated with a block of a plurality of blocks associated with the memory device;
responsive to determining that a value of the data state metric of a memory page of the plurality of memory pages addressable by the ordinary wordline satisfies a specified condition, performing a first media management operation with respect to a management unit containing the memory page;
performing a second media scan operation with respect to a plurality of memory pages addressable by the mandatory wordline, wherein each page of the plurality of memory pages is contained by the respective management unit; and
responsive to determining that a value of the data state metric of a memory page of the plurality of memory pages addressable by the mandatory wordline satisfies the specified condition, performing a second media management operation with respect to the management unit containing the memory page.