Apple Inc.

Hsiao Thio

Daniel Jeffrey Post

Nir Jacob Wakrat

Kenneth Louis Herman

Barry J Corlett

Vadim Khmelnitsky

Anthony Fai

Tahoma Madrone Toelkes

The disclosed architecture uses address mapping to map a block address on a host interface to an internal block address of a non-volatile memory (NVM) device. The block address is mapped to an internal chip select for selecting a Concurrently Addressable Unit (CAU) identified by the block address. The disclosed architecture supports generic NVM commands for read, write, erase and get status operations. The architecture also supports an extended command set for supporting read and write operations that leverage a multiple CAU architecture.

Architecture for address mapping of managed non-volatile memory

Systems and methods are disclosed for generating dynamic super blocks from one or more grown bad blocks of a non-volatile memory ('NVM'). In some embodiments, a dynamic super block can be formed by striping together a subset of memory locations of grown bad blocks from one or more dies of a NVM. The subset of memory locations may be selected based on at least one reliability measurement of the subset of memory locations. In some embodiments, in response to detecting one or more access failures in a portion of the dynamic super block, the NVM interface can retire at least a portion of the dynamic super block. In some embodiments, the NVM interface can reconstruct a new dynamic super block from the dynamic super block by progressively increasing the size of the new dynamic super block.

Systems and methods for generating dynamic super blocks

Systems and methods are disclosed for handling read disturbs based on one or more characteristics of read operations performed on a non-volatile memory ('NVM'). In some embodiments, a control circuitry of a system can generate a variable damage value determined based on one or more characteristics of a read operation. Using the damage value, the control circuitry can update a score associated with the block. If the control circuitry determines that the score exceeds a pre-determined threshold, at least a portion of the block can be relocated to a different memory location in the NVM. In some embodiments, portions of the block may be relocated over a period of time.

Read disturb scorecard

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Hsiao Thio