Integrated circuit and operation method and inspection method thereof

    公开(公告)号:US12119073B2

    公开(公告)日:2024-10-15

    申请号:US17883607

    申请日:2022-08-09

    摘要: The disclosure provides an integrated circuit and an operation method and an inspection method thereof. The integrated circuit includes a one-time programmable (OTP) memory, an identifier generation circuit, and a memory controller. The identifier generation circuit generates a random number, and performs an error-detection-code encoding operation on the random number to generate an identifier with an error-detection code. The memory controller writes the identifier generated by the identifier generation circuit into the OTP memory. The identifier generation circuit reads the identifier from the OTP memory through the memory controller, and performs an error-detection-code decoding operation on the identifier provided by the memory controller to determine whether an error of the identifier from the OTP memory is correctable. When it is determined that the error of the identifier from the OTP memory is not correctable, the writing of the identifier is deemed failed.

    EFFICIENT READ DISTURB SCANNING
    8.
    发明公开

    公开(公告)号:US20240312554A1

    公开(公告)日:2024-09-19

    申请号:US18600360

    申请日:2024-03-08

    摘要: Methods, systems, and devices for efficient read disturb scanning are described. A memory system may limit a quantity of word lines scanned as part of a read disturb scan. For example, the memory system may select a threshold quantity of word lines of a block for the read disturb scan based on a characterization of the word lines, such as selecting one or more word lines having higher bit error rates than other word lines of the block. The memory system may perform the read disturb scan on the selected one or more word lines to determine respective failure bit counts of the selected word lines and exclude unselected word lines of the block from the read disturb scan. The memory system may determine whether to perform a refresh operation on the block based on whether a respective failure bit count satisfies a threshold failure bit count.