MEMORY DEVICE ERROR CHECK AND SCRUB MODE PROVIDING ERROR TRANSPARENCY

    公开(公告)号:EP3992973A1

    公开(公告)日:2022-05-04

    申请号:EP21193306.4

    申请日:2016-08-04

    Abstract: An error check and scrub (ECS) mode enables a memory device to perform error checking and correction (ECC) and count errors. An associated memory controller triggers the ECS mode with a trigger sent to the memory device. The memory device includes multiple addressable memory locations, which can be organized in segments such as wordlines. The memory locations store data and have associated ECC information. In the ECS mode, the memory device reads one or more memory locations and performs ECC for the one or more memory locations based on the ECC information. The memory device counts error information including a segment count indicating a number of segments having at least a threshold number of errors, and a maximum count indicating a maximum number of errors in any segment.

    ON-DIE ECC WITH ERROR COUNTER AND INTERNAL ADDRESS GENERATION

    公开(公告)号:EP3712893A1

    公开(公告)日:2020-09-23

    申请号:EP20166515.5

    申请日:2016-05-27

    Abstract: A memory subsystem enables managing error correction information. A memory device internally performs error detection for a range of memory locations, and increments an internal count for each error detected. The memory device includes ECC logic to generate an error result indicating a difference between the internal count and a baseline number of errors preset for the memory device. The memory device can provide the error result to an associated host of the system to expose only a number of errors accumulated without exposing internal errors from prior to incorporation into a system. The memory device can be made capable to generate internal addresses to execute commands received from the memory controller. The memory device can be made capable to reset the counter after a first pass through the memory area in which errors are counted.

    IMPROVING RELIABILITY, AVAILABILITY, AND SERVICEABILITY IN A MEMORY DEVICE
    7.
    发明授权
    IMPROVING RELIABILITY, AVAILABILITY, AND SERVICEABILITY IN A MEMORY DEVICE 有权
    增加了对存储设备的可靠性,可用性和适用性

    公开(公告)号:EP2035938B1

    公开(公告)日:2012-02-15

    申请号:EP07799113.1

    申请日:2007-06-27

    Inventor: BAINS, Kuljit S.

    CPC classification number: G06F11/1008

    Abstract: Embodiments of the invention are generally directed to improving the reliability, availability, and serviceability of a memory device. In some embodiments, a memory device includes a memory core having a first portion to store data bits and a second portion to store error correction code (ECC) bits corresponding to the data bits. The memory device may also include error correction logic on the same die as the memory core. In some embodiments, the error correction logic enables the memory device to compute ECC bits and to compare the stored ECC bits with the computed ECC bits.

    MEMORY CHIP WITH PER ROW ACTIVATION COUNT HAVING ERROR CORRECTION CODE PROTECTION

    公开(公告)号:EP4109271A2

    公开(公告)日:2022-12-28

    申请号:EP22163660.8

    申请日:2022-03-22

    Abstract: A memory chip is described. The memory chip includes storage cells along a row of the memory chip's storage cell array to store a count value of the row's activations and error correction code (ECC) information to protect the count value. The memory chip includes ECC read logic circuitry to correct an error in the count value. The memory chip includes a comparator to compare the count value against a threshold. The memory chip includes circuitry to increment the count value if the count value is deemed not to have reached the threshold and ECC write logic circuitry to determine new ECC information for the incremented count value, and write driver circuitry to write the incremented count value and the new ECC information into the storage cells. The memory chip includes circuitry to cause the row to be refreshed if the count value is deemed to have reached the threshold.

    IMPEDANCE COMPENSATION BASED ON DETECTING SENSOR DATA

    公开(公告)号:EP3657506A1

    公开(公告)日:2020-05-27

    申请号:EP19211469.2

    申请日:2016-03-07

    Abstract: A memory subsystem manages memory I/O impedance compensation by the memory device monitoring a need for impedance compensation. Instead of a memory controller regularly sending a signal to have the memory device update the impedance compensation when a change is not needed, the memory device can indicate when it is ready to perform an impedance compensation change. The memory controller can send an impedance compensation signal to the memory device in response to a compensation flag set by the memory or in response to determining that a sensor value has changed in excess of a threshold.

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