DETERMINING READ VOLTAGE OFFSET IN MEMORY DEVICES

    公开(公告)号:US20240347084A1

    公开(公告)日:2024-10-17

    申请号:US18755033

    申请日:2024-06-26

    CPC classification number: G11C7/1096 G11C7/1069 G11C7/109 G11C7/222

    Abstract: Systems and methods are disclosed including a memory device and a processing device operatively coupled to the memory device. The processing device can perform operations including initializing the memory device; selecting at least one sample management unit on the memory device; performing a calibration operation on the sample management unit to determine a duration value reflecting a duration during which the memory device was powered down; adjusting an accumulator value based on the duration value; determining a read voltage value based on the accumulator value; and performing a read operation using the read voltage value.

    Apparatus for determining memory cell data states

    公开(公告)号:US12112819B2

    公开(公告)日:2024-10-08

    申请号:US18376198

    申请日:2023-10-03

    Abstract: Apparatus might include an array of memory cells and a controller for access of the array of memory cells. The controller might be configured to cause the apparatus to apply a sense voltage level to a control gate of a memory cell of the array of memory cells, generate N determinations whether the memory cell is deemed to activate or deactivate while applying the sense voltage level, wherein N is an integer value greater than or equal to three, deem the memory cell to have a threshold voltage in a first range of threshold voltages lower than the sense voltage level in response to a majority of the N determinations indicating activation of the memory cell, and deem the memory cell to have a threshold voltage in a second range of threshold voltages higher than the sense voltage level in response to a majority of the N determinations indicating activation of the memory cell.

    SEMICONDUCTOR MEMORY DEVICE AND MEMORY SYSTEM

    公开(公告)号:US20240321382A1

    公开(公告)日:2024-09-26

    申请号:US18589628

    申请日:2024-02-28

    Inventor: Junji YAMADA

    CPC classification number: G11C29/52 G11C7/1069 G11C7/1096

    Abstract: A semiconductor memory device includes a memory cell array configured to store data, and a control circuit configured to control a write operation of writing data into the memory cell array. In the write operation, the control circuit is configured to receive first data and second data including a parity bit, generate a parity bit for the first data, check whether the parity bit and the parity bit match with each other, and write the first data into the memory cell array.

    Semiconductor device
    6.
    发明授权

    公开(公告)号:US12080379B2

    公开(公告)日:2024-09-03

    申请号:US17939016

    申请日:2022-09-07

    CPC classification number: G11C7/222 G11C7/06 G11C7/1096

    Abstract: A semiconductor device according to an embodiment includes a plurality of sampler circuits configured to receive a plurality of offset clock signals or a plurality of divided clock signals and to sample a data signal in response to each of a plurality of divided clock signals. A calibration circuit applies a first offset clock signal to a first sampler circuit, applies a second offset clock signal having an opposite phase to the first offset clock signal to a second sampler circuit, and generates a first offset adjustment signal for adjusting an offset of the first sampler circuit based on an output of the first sampler circuit that is output in response to the first offset clock signal.

    Semiconductor device
    7.
    发明授权

    公开(公告)号:US12080377B2

    公开(公告)日:2024-09-03

    申请号:US17802281

    申请日:2021-03-04

    Abstract: A semiconductor device with a novel structure is provided. The semiconductor device includes a plurality of arithmetic blocks each including an arithmetic circuit portion and a memory circuit portion. The arithmetic circuit portion and the memory circuit portion are electrically connected to each other. The arithmetic circuit portion and the memory circuit portion have an overlap region. The arithmetic circuit portion includes, for example, a Si transistor, and the memory circuit portion includes, for example, an OS transistor. The arithmetic circuit portion has a function of performing product-sum operation. The memory circuit portion has a function of retaining weight data. A first driver circuit has a function of writing the weight data to the memory circuit portion. The weight data is written to all the memory circuit portions included in the same column with the use of the first driver circuit.

    ELECTRONIC DEVICE, MEMORY DEVICE, AND WRITE LEVELING METHOD THEREOF

    公开(公告)号:US20240265955A1

    公开(公告)日:2024-08-08

    申请号:US18164570

    申请日:2023-02-04

    Inventor: Shun-Ke Wu

    CPC classification number: G11C7/222 G11C7/1093 G11C7/1096

    Abstract: An electronic device, a memory device of the electronic device, and a write leveling method of the memory device are provided. The memory device is coupled to a memory controller to receive a data strobe signal DQS and a clock signal CLK. In a write leveling mode, the memory device provides a write leveling function to the memory controller, where the write leveling function includes a plurality of iterative operations. In each of the iterative operations, the memory controller sends a notification to the memory device, and the memory device sets up a strobe window based on the notification. The memory device samples the clock signal CLK based on a phase of the data strobe signal DQS in the strobe window, so as to send a sampling result back to the memory controller. The memory device is prohibited from sampling the clock signal CLK outside the strobe window.

    Determining read voltage offset in memory devices

    公开(公告)号:US12057190B2

    公开(公告)日:2024-08-06

    申请号:US17897438

    申请日:2022-08-29

    CPC classification number: G11C7/1096 G11C7/1069 G11C7/109 G11C7/222

    Abstract: Systems and methods are disclosed including a memory device and a processing device operatively coupled to the memory device. The processing device can perform operations including periodically, at a predefined frequency, incrementing a value stored in an accumulator by a composite parameter value; responsive to receiving a program request specifying a data item to be programmed to a management unit of the memory device, obtaining a first value from the accumulator; storing the first value to a program reference table; programming the data item to the management unit; responsive to receiving a read request specifying the management unit, obtaining a second value from the accumulator; determining a read voltage value based on a difference of the first value and the second value; and performing a read operation, using the read voltage value, on the management unit.

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