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公开(公告)号:US11568913B2
公开(公告)日:2023-01-31
申请号:US17164738
申请日:2021-02-01
Applicant: Micron Technology, Inc.
Inventor: Timothy M. Hollis , James S. Rehmeyer , Baekkyu Choi , Yogesh Sharma , Eric J. Stave , Brian W. Huber , Miles S. Wiscombe
IPC: G11C11/406
Abstract: Methods, systems, and devices for voltage adjustment based on, for example, pending refresh operations are described. A memory device may periodically perform refresh operations to refresh volatile memory cells and may at times postpone performing one or more refresh operations. A memory device may determine a quantity of pending (e.g., postponed) refresh operations, such as by determining a quantity of refresh intervals that have elapsed without receiving or executing a refresh command, among other methods. A memory device may pre-emptively adjust (or cause to be adjusted) a supply voltage associated with the memory device or memory device component based on the quantity of pending refresh operations to prepare for the current demand associated with the performing the one or more pending refresh operations. For example, the memory device may increase a supply voltage associated with one or more components to prepare for performing multiple pending refresh operations.
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公开(公告)号:US11532358B2
公开(公告)日:2022-12-20
申请号:US16553821
申请日:2019-08-28
Applicant: Micron Technology, Inc.
Inventor: Anthony D. Veches , Debra M. Bell , James S. Rehmeyer , Robert Bunnell , Nathaniel J. Meier
IPC: G11C11/40 , G11C14/00 , G11C17/18 , G11C11/4072 , G11C11/4096 , G11C17/16
Abstract: Memory devices and systems with automatic background precondition upon powerup, and associated methods, are disclosed herein. In one embodiment, a memory device includes a memory array having a plurality of memory cells and a fuse array configured to store precondition data. The precondition data can identify a portion of the memory array, specify a predetermined precondition state, or a combination thereof. When the memory device powers on, the memory device can be configured to automatically retrieve the precondition data from the fuse array and/or to write memory cells in the portion of the memory array to the predetermined precondition state before executing an access command.
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公开(公告)号:US11488651B2
公开(公告)日:2022-11-01
申请号:US17135403
申请日:2020-12-28
Applicant: Micron Technology, Inc.
Inventor: James S. Rehmeyer , Debra M. Bell , George B. Raad , Brian P. Callaway , Joshua E. Alzheimer
IPC: G11C11/406 , G11C11/403 , G11C11/408
Abstract: A memory device may include a phase driver circuit that may output a first voltage for refreshing a plurality of memory cells. The memory device may also include a plurality of word line driver circuits that may receive the first voltage via the phase driver circuit, such that each word line driver circuit of the plurality of word line driver circuits may provide the first voltage to a respective word line associated with a respective portion of the plurality of memory cells. In addition, each word line driver circuit may refresh the respective portion of the plurality of memory cells based on a respective word line enable signal provided to a first switch of the respective word line driver circuit.
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公开(公告)号:US11410713B2
公开(公告)日:2022-08-09
申请号:US16840946
申请日:2020-04-06
Applicant: MICRON TECHNOLOGY, INC.
Inventor: Di Wu , Debra M. Bell , Anthony D. Veches , James S. Rehmeyer , Libo Wang
IPC: G11C7/22 , G11C7/10 , G11C8/10 , G11C11/4096 , G11C11/4076 , G11C11/406
Abstract: Tracking circuitry may be used to determine if commands and/or command sequences include illegal commands and/or illegal command sequences. If the commands and/or command sequences include illegal commands and/or illegal command sequences, the tracking circuitry may activate signals that prevent execution of the commands and/or notice of the detected illegal commands and/or command sequences.
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公开(公告)号:US20220189540A1
公开(公告)日:2022-06-16
申请号:US17684235
申请日:2022-03-01
Applicant: Micron Technology, Inc.
Inventor: Dale H. Hiscock , Debra M. Bell , Michael Kaminski , Joshua E. Alzheimer , Anthony D. Veches , James S. Rehmeyer
IPC: G11C11/406 , G11C11/4074 , G11C16/10 , G11C11/4072
Abstract: Memory devices and systems with partial array refresh control over memory regions in a memory array, and associated methods, are disclosed herein. In one embodiment, a memory device includes a memory array having a first memory region and a second memory region. The memory device is configured to write data to the memory array in accordance with a programming sequence by initially writing data to unutilized memory cells of the first memory region before initially writing data to unutilized memory cells of the second memory region. The memory device is further configured to determine that the data stored on the first and/or second memory regions is not consolidated, and to consolidate at least a portion of the data by rewriting the portion of the data to physically or logically contiguous memory cells of the first memory region and/or the second memory region.
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96.
公开(公告)号:US20220148638A1
公开(公告)日:2022-05-12
申请号:US17094731
申请日:2020-11-10
Applicant: Micron Technology, Inc.
Inventor: Gary L. Howe , Miles S. Wiscombe , James S. Rehmeyer , Eric J. Stave
IPC: G11C11/406 , G11C11/4074 , G11C11/4076
Abstract: Methods, apparatuses, and systems related to voltage management of memory apparatuses/systems are described. The memory device can include circuitry configured to determine an operating frequency of a clock signal for an ongoing or an upcoming memory operation. The memory device may generate a control indicator for increasing a system voltage for higher operating frequencies, for decreasing the system voltage for lower operating frequencies, or a combination thereof.
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公开(公告)号:US20220093488A1
公开(公告)日:2022-03-24
申请号:US17030144
申请日:2020-09-23
Applicant: Micron Technology, Inc.
Inventor: James S. Rehmeyer , Christopher G. Wieduwilt
IPC: H01L23/467 , H01L25/00 , H01L25/10
Abstract: An improved memory module and methods for constructing the same are disclosed herein. The memory module includes a substrate having a first surface and a second surface opposite the first surface, each having a central portion, a first array area and a second array area. The first array area is cooler than the second array area during operation. The memory module also includes a power management integrated circuit attached to the central portion of the first surface. The memory module also includes a first semiconductor die attached to the substrate in the first array area. The first semiconductor die has a first performance rating of an operating parameter at high temperatures. The memory module also includes a second semiconductor die attached to the substrate in the second array area. The second semiconductor die has a second performance rating of an operating parameter better than the first performance rating at high temperatures.
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公开(公告)号:US11222683B2
公开(公告)日:2022-01-11
申请号:US17008396
申请日:2020-08-31
Applicant: MICRON TECHNOLOGY, INC.
Inventor: James S. Rehmeyer
IPC: G11C11/406 , G11C8/12 , G11C11/4076 , G11C11/408
Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for staggering the timing of targeted refresh operations. Memory dies may need to periodically perform refresh operations, which may be auto-refresh operations or targeted refresh operations. Targeted refresh operations may draw less current than auto-refresh operations. When dies are collected into a group (e.g., a memory stack, a memory module) the timing of targeted refresh operations may be staggered between the different dies to help reduce the peak current drawn. The targeted refresh operations may be staggered such that, when a maximum number of the dies are performing a refresh operation, at least one of the dies performs a targeted refresh operation instead of an auto-refresh operation.
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公开(公告)号:US20220005523A1
公开(公告)日:2022-01-06
申请号:US16921729
申请日:2020-07-06
Applicant: Micron Technology, Inc.
Inventor: James S. Rehmeyer , Jason M. Johnson , Joo-Sang Lee
IPC: G11C11/406 , G06F11/30
Abstract: Memory devices, systems, and associated methods with per die temperature-compensated refresh control, and associated methods, are disclosed herein. In one embodiment, a memory device includes a plurality of memory cells and a sensor configured to measure a temperature of the memory device. The memory device determines a frequency at which it is receiving refresh commands. The memory device is further configured to skip refresh operations of the memory cells based, at least in part, on the determination and on the temperature of the memory device.
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公开(公告)号:US20210398603A1
公开(公告)日:2021-12-23
申请号:US17466160
申请日:2021-09-03
Applicant: Micron Technology, Inc.
Inventor: Christopher G. Wieduwilt , James S. Rehmeyer , Seth A. Eichmeyer
Abstract: Methods, apparatuses and systems related to managing repair assets are described. An apparatus stores a repair segment locator and a repair address for each defect repair. The apparatus may be configured to selectively apply a repair asset to one of multiple sections according to the repair segment locator.
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