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公开(公告)号:US20240303187A1
公开(公告)日:2024-09-12
申请号:US18591368
申请日:2024-02-29
Applicant: Micron Technology, Inc.
Inventor: Pitamber Shukla , Ryan Hrinya , Fulvio Rori , Scott A. Stoller , Tyler Betz
IPC: G06F12/02
CPC classification number: G06F12/0246
Abstract: Apparatuses and methods for determining performing read operations on a partially programmed block are provided. One example apparatus can include a controller configured to apply a read voltage to a word line in an array of memory cells during a read operation on the word line, apply a first pass voltage to a number of programmed word lines in the array of memory cells during the read operation, and apply a second pass voltage to a number of unprogrammed word lines in the array of memory cells during the read operation.
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公开(公告)号:US20240281148A1
公开(公告)日:2024-08-22
申请号:US18443584
申请日:2024-02-16
Applicant: Micron Technology, Inc.
Inventor: Jiun-Horng Lai , Pitamber Shukla , Ching-Huang Lu , Chengkuan Yin , Ronit Roneel Prakash , Yoshiaki Fukuzumi
IPC: G06F3/06
CPC classification number: G06F3/0619 , G06F3/0659 , G06F3/0679
Abstract: Apparatuses, systems, and methods for determining a dynamic erase voltage step. One example apparatus can include an array of memory cells and a controller coupled to the array of memory cells, wherein the controller is configured to apply a first erase voltage to a first wordline and a second wordline in the array of memory cells to perform an erase operation, apply a first verify voltage to the first wordline to verify the erase operation, apply a second verify voltage greater than the first verify voltage to the second wordline in response to failing to verify the erase operation by applying the first verify voltage to the first wordline, and apply a second erase voltage to the first wordline and the second wordline in response to verifying the erase operation by applying the second verify voltage to the second wordline.
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53.
公开(公告)号:US12068036B2
公开(公告)日:2024-08-20
申请号:US17887765
申请日:2022-08-15
Applicant: Micron Technology, Inc.
Inventor: Jiun-horng Lai , Pitamber Shukla , Ching-Huang Lu , Chengkuan Yin , Yoshiaki Fukuzumi
Abstract: A memory device includes a memory array comprising memory cells and control logic. The control logic performs operations including: causing a first erase pulse to be applied to a memory line of the memory array to perform an erase operation, the memory line being a conductive line coupled to a string of the memory cells; suspending the erase operation in response to receipt of a suspend command during a ramping period of the first erase pulse; recording a suspend voltage level of the first erase pulse when suspended; causing the erase operation to be resumed in response to an erase resume command; selectively modifying a pulse width of a flattop period of a second erase pulse based on the suspend voltage level; and causing the second erase pulse to be applied to the memory line during a resume of the erase operation.
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公开(公告)号:US20240249789A1
公开(公告)日:2024-07-25
申请号:US18417517
申请日:2024-01-19
Applicant: Micron Technology, Inc.
Inventor: Tarun Singh Yadav , Scott Anthony Stoller , Pitamber Shukla , Fulvio Rori , Attila A. Herrera , Justin Bates
IPC: G11C29/12
CPC classification number: G11C29/1201 , G11C2029/1202
Abstract: Aspects of the present disclosure configure a memory sub-system controller to adaptively allocate word lines (WLs). The controller accesses reliability data of a set of main WLs of a block of the set of memory components. The controller determines that one or more WLs of the set of main WLs of the block are associated with respective reliability data that transgress a threshold and, in response to determining that the one or more WLs are associated with the respective reliability data that transgress the threshold, replaces the one or more WLs of the set of main WLs of the block with one or more dummy WLs. The controller programs data into the block using the one or more dummy WLs instead of the one or more WLs of the set of main WLs of the block.
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公开(公告)号:US20240248612A1
公开(公告)日:2024-07-25
申请号:US18406852
申请日:2024-01-08
Applicant: Micron Technology, Inc.
Inventor: Lei Lin , Peng Zhang , Pitamber Shukla , Zhengang Chen , Zhenming Zhou
IPC: G06F3/06
CPC classification number: G06F3/0619 , G06F3/0659 , G06F3/0679
Abstract: Aspects of the present disclosure configure a system component, such as a memory sub-system controller, to modify pulses used to program memory components. The controller receives a request to program data in an individual memory component of a set of memory components. The controller computes a plurality of memory reliability criteria associated with the individual memory component and compares the plurality of memory reliability criteria to one or more threshold values. The controller selects a program pulse used to program the data to the individual memory component based on a result of comparing the plurality of memory reliability criteria to the one or more threshold values.
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公开(公告)号:US11797376B2
公开(公告)日:2023-10-24
申请号:US18080309
申请日:2022-12-13
Applicant: Micron Technology, Inc.
Inventor: Scott Anthony Stoller , Pitamber Shukla , Anita Marguerite Ekren
CPC classification number: G06F11/0793 , G06F11/076 , G06F11/0772 , G06F11/0787 , G06F11/3037
Abstract: A log of error events associated with a memory device is maintained. Each error event included in the log is associated with one of multiple physical locations within the memory device. A physical location within the memory device is identified for background scanning based on the log of error events. A background scan is performed on the physical location identified based on the log of error events.
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公开(公告)号:US11709616B2
公开(公告)日:2023-07-25
申请号:US17890885
申请日:2022-08-18
Applicant: Micron Technology, Inc.
Inventor: Priya Venkataraman , Pitamber Shukla , Scott A. Stoller , Giuseppina Puzzilli , Niccolo′ Righetti
IPC: G06F3/06
CPC classification number: G06F3/0652 , G06F3/0625 , G06F3/0679
Abstract: A method is described that includes determining a number of program and erase cycles associated with a block of pages of a memory device and determining a preprogram voltage based on the number of program and erase cycles to apply to the block of pages prior to an erase operation. The method further includes applying the preprogram voltage to the block of pages and performing an erase operation on the block of pages following application of the preprogram voltage to the block of pages.
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公开(公告)号:US11693587B2
公开(公告)日:2023-07-04
申请号:US17404875
申请日:2021-08-17
Applicant: Micron Technology, Inc.
Inventor: Sandeep Reddy Kadasani , Scott Anthony Stoller , Pitamber Shukla , Niccolo' Righetti , Chi Ming Chu
IPC: G06F3/06
CPC classification number: G06F3/0655 , G06F3/0604 , G06F3/0679
Abstract: A read operation is performed on a memory device in accordance with a pass-through voltage setting that defines a pass-through voltage applied to one or more cells of the memory device during read operations. A number of zero bits read from the memory device based on the read operation are counted and compared with a threshold value. Based on the number of zero bits exceeding the threshold value, the pass-through voltage is increased by adjusting the pass-through voltage setting.
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公开(公告)号:US20230195355A1
公开(公告)日:2023-06-22
申请号:US17733460
申请日:2022-04-29
Applicant: Micron Technology, Inc.
Inventor: Pitamber Shukla , Avinash Rajagiri , Devin Batutis
IPC: G06F3/06
CPC classification number: G06F3/0653 , G06F3/0616 , G06F3/0679
Abstract: Prioritization of VT scans can be performed using particular select gates of a memory device or memory sub-system in the absence of performing such select gate scan operations on all of the select gates of an entire memory die or of all the memory dice of a memory device or memory sub-system. A method for such prioritization of VT scans includes determining quality characteristics of a memory die and altering a threshold voltage applied to the memory die in performance of a select gate scan operation based, at least in part, on the determined quality characteristics of the memory die. Such methods can further include performing the select gate scan operation by applying signaling having the altered threshold voltage to a select gate of the memory die.
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公开(公告)号:US20220391125A1
公开(公告)日:2022-12-08
申请号:US17890885
申请日:2022-08-18
Applicant: Micron Technology, Inc.
Inventor: Priya Venkataraman , Pitamber Shukla , Scott A. Stoller , Giuseppina Puzzilli , Niccolo' Righetti
IPC: G06F3/06
Abstract: A method is described that includes determining a number of program and erase cycles associated with a block of pages of a memory device and determining a preprogram voltage based on the number of program and erase cycles to apply to the block of pages prior to an erase operation. The method further includes applying the preprogram voltage to the block of pages and performing an erase operation on the block of pages following application of the preprogram voltage to the block of pages.
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