Systems and methods of correcting errors in unmatched memory devices

    公开(公告)号:US12100458B2

    公开(公告)日:2024-09-24

    申请号:US17827562

    申请日:2022-05-27

    IPC分类号: G11C16/32

    CPC分类号: G11C16/32

    摘要: Systems and methods are provided for correcting errors in unmatched memory devices. Various embodiments herein train a memory interface to determine a duty cycle timing for a clock signal in a data window formed by a data signal in a memory cell. The duty cycle timing identifies an initial trained timing in the data window at which a setup portion and a hold portion of the data window are approximately equal in length when the trigger signal is received at the initial trained timing. The embodiments herein also identify an event that shifts the duty cycle timing away from the initial trained timing, and triggers a retraining of the memory interface based on a determination that at least one of two points defined about the initial trained timing fails a two-point sampling.

    NONVOLATILE MEMORY DEVICE AND OPERATING METHOD OF NONVOLATILE MEMORY DEVICE

    公开(公告)号:US20240282377A1

    公开(公告)日:2024-08-22

    申请号:US18441331

    申请日:2024-02-14

    IPC分类号: G11C16/08 G11C16/04 G11C16/32

    摘要: Provided is an operating method of a nonvolatile memory device including a plurality of cell strings, each cell string of the plurality of cell strings including a plurality of memory cells, connected between a bit line and a common source line, and vertical holes penetrating a plurality of word lines stacked in a direction perpendicular to a substrate, the operating method including applying a word line voltage to the plurality of word lines, classifying the plurality of word lines into a plurality of regions, each region of the plurality of regions including at least one of the word lines, and recovering voltages of the plurality of word lines by recovering voltages of word lines arranged in a central region among the plurality of regions before recovering voltages of word lines in other regions of the plurality of regions.

    CLOCK SIGNAL GENERATOR AND METHOD OF OPERATING THE SAME

    公开(公告)号:US20240249781A1

    公开(公告)日:2024-07-25

    申请号:US18541839

    申请日:2023-12-15

    发明人: Keiichi KUSHIDA

    IPC分类号: G11C16/32 G11C16/30

    CPC分类号: G11C16/32 G11C16/30

    摘要: A clock signal generator includes a power voltage providing circuit configured to provide a power voltage changing according to a temperature based on a temperature coefficient, a first reference voltage providing circuit configured to provide a first reference voltage based on an internal power voltage, and a clock signal generating circuit configured to generate a clock signal based on the power voltage and the first reference voltage.

    COMPACT DIGITAL THERMOMETER IN A MEMORY DEVICE

    公开(公告)号:US20240233839A9

    公开(公告)日:2024-07-11

    申请号:US18489770

    申请日:2023-10-18

    IPC分类号: G11C16/32

    CPC分类号: G11C16/32 G01K13/00

    摘要: A digital thermometer includes a first oscillator to generate a first clock signal, wherein a period of the first clock signal remains constant in view of changes in a temperature of the apparatus and a first counter coupled to the first oscillator, the first counter to count a fixed number of cycles of the first clock signal associated with a measurement period. The digital thermometer further includes a second oscillator to generate a second clock signal, wherein a period of the second clock signal varies with changes in the temperature and a second counter coupled to the second oscillator, the second counter to generate an output representing a count of a number of cycles of the second clock signal that occur during the measurement period. In addition, the digital thermometer includes calibration circuitry coupled to the second counter, the calibration circuitry to calibrate the output of the second counter to generate a value representing the temperature of the apparatus.

    Sensing device for non-volatile memory

    公开(公告)号:US12027214B2

    公开(公告)日:2024-07-02

    申请号:US17949255

    申请日:2022-09-21

    发明人: Che-Wei Chang

    摘要: A sensing device for a non-volatile memory includes a reference circuit, two switches, a sensing circuit and a judging circuit. The reference circuit is connected to a first node. A first terminal of the first switch is connected with the first node and a control terminal of the first switch receives an inverted reset pulse. A first terminal of the second switch is connected with the first node, a second terminal of the second switch receives a ground voltage, and a control terminal of the second switch receives a reset pulse. The sensing circuit is connected between the second terminal of the first switch and a second node. The sensing circuit generates a first sensed current. The judging circuit is connected to the second node. The judging circuit receives the first sensed current and generates an output data according to the first sensed current.