Sequential voltage ramp-down of access lines of non-volatile memory device

    公开(公告)号:US11417396B2

    公开(公告)日:2022-08-16

    申请号:US17067550

    申请日:2020-10-09

    Abstract: Some embodiments include apparatuses and methods of operating the apparatuses. One of the apparatuses includes a memory cell string having first, second, third, fourth, and fifth memory cells; access lines including first, second, third, fourth, and fifth access lines coupled to the first, second, third, fourth, and fifth memory cells, respectively, and a module. The first memory cell is between the second and third memory cells. The second memory cell is between the first and fourth memory cells. The third memory cell is between the first and fifth memory cells. The module is to couple the first access line to a ground node at a first time of a memory operation, couple the second and third access lines to the ground node at a second time of the operation after the first time, and couple the fourth and fifth access lines to the ground node at a third time of the operation after the second time.

    SEQUENTIAL VOLTAGE RAMP-DOWN OF ACCESS LINES OF NON-VOLATILE MEMORY DEVICE

    公开(公告)号:US20220392533A1

    公开(公告)日:2022-12-08

    申请号:US17888041

    申请日:2022-08-15

    Abstract: Some embodiments include apparatuses and methods of operating the apparatuses. One of the apparatuses includes a memory cell string having first, second, third, fourth, and fifth memory cells; access lines including first, second, third, fourth, and fifth access lines coupled to the first, second, third, fourth, and fifth memory cells, respectively, and a module. The first memory cell is between the second and third memory cells. The second memory cell is between the first and fourth memory cells. The third memory cell is between the first and fifth memory cells. The module is to couple the first access line to a ground node at a first time of a memory operation, couple the second and third access lines to the ground node at a second time of the operation after the first time, and couple the fourth and fifth access lines to the ground node at a third time of the operation after the second time.

    Memories for mitigating program disturb

    公开(公告)号:US11200958B2

    公开(公告)日:2021-12-14

    申请号:US17091379

    申请日:2020-11-06

    Abstract: Memories might include an array of memory cells comprising a plurality of strings of series-connected memory cells and a controller for access of the array of memory cells, wherein the controller is configured to perform a sense operation on a particular memory cell of a string of series-connected memory cells, discharge the access line for a second memory cell of the string of series-connected memory cells to a first voltage level and discharge the access line for the particular memory cell to a second voltage level higher than the first voltage level after completion of the sense operation, and discharge the access line for a third memory cell of the string of series-connected memory cells to a third voltage level lower than the second voltage level and higher than the first voltage level after initiating the discharge of the access line for the particular memory cell.

    ERASING MEMORY
    8.
    发明申请

    公开(公告)号:US20210233591A1

    公开(公告)日:2021-07-29

    申请号:US17228807

    申请日:2021-04-13

    Abstract: Methods of operating a memory, and memory configured to perform similar methods, might include applying a positive first voltage level to a first node selectively connected to a string of series-connected memory cells while applying a negative second voltage level to a control gate of a transistor connected between the first node and the string of series-connected memory cells, and increasing the voltage level applied to the first node to a third voltage level while increasing the voltage level applied to the control gate of the transistor to a fourth voltage level lower than the third voltage level and higher than the first voltage level.

    MEMORIES FOR MITIGATING PROGRAM DISTURB

    公开(公告)号:US20210065827A1

    公开(公告)日:2021-03-04

    申请号:US17091379

    申请日:2020-11-06

    Abstract: Memories might include an array of memory cells comprising a plurality of strings of series-connected memory cells and a controller for access of the array of memory cells, wherein the controller is configured to perform a sense operation on a particular memory cell of a string of series-connected memory cells, discharge the access line for a second memory cell of the string of series-connected memory cells to a first voltage level and discharge the access line for the particular memory cell to a second voltage level higher than the first voltage level after completion of the sense operation, and discharge the access line for a third memory cell of the string of series-connected memory cells to a third voltage level lower than the second voltage level and higher than the first voltage level after initiating the discharge of the access line for the particular memory cell.

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