Patent classifications
G11C29/4401
Technique to proactively identify potential uncorrectable error correction memory cells and countermeasure in field
A memory apparatus and method of operation is provided. The apparatus has blocks each including non-volatile storage elements. Each of the non-volatile storage elements stores a threshold voltage representative of an element data. The apparatus also includes one or more managing circuits configured to erase at least one of the blocks in an erase operation and program the element data in a program operation. The one or more managing circuits are also configured to proactively identify ones of the blocks as potential bad blocks and selectively apply stress to the ones of the blocks identified as the potential bad blocks and determine whether the potential bad blocks should be retired from the erase and program operations and put in a grown bad block pool or released to a normal block pool used for the erase and program operations based on a judgment after selectively applying the stress.
EARLY ERROR DETECTION AND AUTOMATIC CORRECTION TECHNIQUES FOR STORAGE ELEMENTS TO IMPROVE RELIABILITY
A semiconductor chip with error detection and correction includes multiple pipes and each pipe is coupled to one or more ports on the semiconductor chip. The semiconductor chip further includes a state machine coupled to the pipes to generate a number of events consisting of read- and/or scan-type events associated with a plurality of storage elements. The state machine is implemented in hardware and can centrally detect and correct erroneous memory entries across the plurality of storage elements.
3D memory devices and structures with control circuits
A semiconductor device, the device including: a first level including control circuits, where the control circuits include a plurality of first transistors and a plurality of metal layers; and a memory level disposed on top of the first level, where the memory level includes an array of memory cells, where each of the memory cells includes at least one second transistor, where the control circuits control access to the array of memory cells, where the first level is bonded to the memory level, where the bonded includes oxide to oxide bonding regions and a plurality of metal to metal bonding regions, and where at least a portion of the array of memory cells is disposed directly above at least one of the plurality of metal to metal bonding regions.
SEMICONDUCTOR MEMORY DEVICE CAPABLE OF PERFORMING SOFT-POST-PACKAGE-REPAIR OPERATION
Disclosed herein is an apparatus that includes a fuse array circuit including a plurality of fuse sets each assigned to a corresponding one of a plurality of fuse addresses and configured to operatively store a fuse data, and a first circuit configured to generate and sequentially update a fuse address to sequentially read the fuse data from the plurality of fuse sets. The first circuit is configured to change a frequency of updating the fuse address based on a first signal.
Speculative section selection within a memory device
Methods, systems, and devices for speculative memory section selection are described. Defective memory components in one memory section may be repaired using repair components in another memory section. Speculative selection of memory sections may be enabled, whereby access lines in multiple memory sections may be selected when a memory command indicating an address in one memory section is received. While the access lines in the multiple memory sections are selected, a determination of whether repair components in another memory section are to be accessed is performed. Based on the determination, the access line in one of the memory sections may be maintained and the access lines in the other memory sections may be deselected.
MEDIA MANAGEMENT OPERATIONS BASED ON HEALTH CHARACTERISTICS OF MEMORY CELLS
A method includes determining that a ratio of valid data portions to a total quantity of data portions of a block of memory cells is greater than or less than a valid data portion threshold and determining that health characteristics for the valid data portions of the block of memory cells are greater than or less than a valid data health characteristic threshold. The method further includes performing a first media management operation on the block of memory cells in response to determining that the ratio of valid data portions to the total quantity of data portions is greater than the valid data portion threshold and performing a second media management operation on at least a portion of the block of memory cells in response to determining that the ratio of valid data portions to the total quantity of data portions is less than the valid data portion threshold and the health characteristics for the valid data portions are greater than the valid data health characteristic threshold.
MEMORY SYSTEM AND DATA PROCESSING SYSTEM INCLUDING THE SAME
A memory system and a data processing system including the memory system may manage a plurality of memory devices. For example, the data processing system may categorize and analyze error information from the memory devices, acquire characteristic data from the memory devices and set operation modes of the memory devices based on the characteristic data, allocate the memory devices to a host workload, detect a defective memory device among the memory devices and efficiently recover the defective memory device.
Managing read level voltage offsets for low threshold voltage offset bin placements
A block family associated with a memory device is created. The block family is associated with a threshold voltage offset bin. A set of read level voltage offsets is determined such that, applying the set of read level voltage offsets to a base read level threshold voltage associated with the block family, result in a suboptimal error rate not exceeding a maximum allowable error rate. The determined set of read level offsets is associated with the threshold voltage offset bin by updating a block family metadata.
AUTOMATIC BACKUP AND REPLACEMENT OF A STORAGE DEVICE UPON PREDICTING FAILURE OF THE STORAGE DEVICE
Methods, systems, and computer-readable media (transitory or non-transitory) are described herein for automatic backup and replacement of a storage device. According to an example, a storage failure for given storage device may be predicted. A backup process of the give storage device to a remote system may be initiated based on predicting the storage failure for the given storage device. The backup process may create a one-to-one image backup or a user data backup based on a predicted amount of time until the storage failure of the given storage device. A restore process of a new storage device at the remote system may be initiated upon completion of the backup process. The restore process may depend on the backup created during the backup process and/or various types of new storage devices that are available. The new storage device may be based on the given storage device.
APPARATUSES, SYSTEMS, AND METHODS FOR FORCED ERROR CHECK AND SCRUB READOUTS
A memory performs a sequence of ECS operations to read a codeword, detect and correct any errors, and write the corrected codeword back to the memory array. An ECS circuit counts errors which are detected, and sets a value of one or more ECS registers in a mode register if the count exceeds a threshold filter at the end of the ECS cycle. The memory also includes a forced ECS readout circuit, which responsive to a command, for example from a controller, sets the value(s) in the ECS register(s).