Data storage apparatus, and internal voltage trimming circuit and trimming method therefor

    公开(公告)号:US11133072B2

    公开(公告)日:2021-09-28

    申请号:US16727599

    申请日:2019-12-26

    申请人: SK hynix Inc.

    摘要: A data storage apparatus includes storage, and a controller including an internal voltage trimming circuit and controlling the storage in response to a request from a host. The trimming circuit may include an integral circuit sampling a difference between a test voltage output by a device under test and a reference voltage, generating an integral signal by integrating a sampled signal, and including an offset cancellation unit cancelling an offset from the sampled signal, a comparison circuit generating a comparison signal by comparing the integral signal with the reference voltage, a code generation circuit receiving an initial trimming code and generating preliminary trimming codes by increasing or decreasing the initial trimming code in response to the comparison signal, and a code average signal generation circuit generating the final trimming code by averaging the preliminary trimming codes for a given time and provide the final trimming code to the storage.

    Techniques for accessing an array of memory cells to reduce parasitic coupling

    公开(公告)号:US11107519B2

    公开(公告)日:2021-08-31

    申请号:US16601427

    申请日:2019-10-14

    摘要: Techniques are described herein for mitigating parasitic signals induced by state transitions during an access operation of a selected memory cell in a memory device. Some memory devices may include a plate that is coupled with memory cells associated with a plurality of digit lines and/or a plurality of word lines. Because the plate is coupled with a plurality of digit lines and/or word lines, unintended coupling between various components of the memory device may occur during an access operation. To mitigate parasitic signals induced by the unintended coupling, the memory device may isolate the selected memory cell from a selected digit line during certain portions of the access operation. The memory device may isolate the selected memory cell when the plate transitions from a first voltage to a second, when the selected digit line transitions from a third voltage to a fourth voltage, or a combination thereof.

    Amplifier circuit devices and methods

    公开(公告)号:US11056163B2

    公开(公告)日:2021-07-06

    申请号:US16945793

    申请日:2020-07-31

    申请人: Arm Limited

    IPC分类号: G11C7/02 G11C11/16 H03F3/45

    摘要: In a particular implementation, an apparatus including first and second bias circuits and an inner amplifier provides sense amplifier offset cancellation. The inner amplifier includes: first and second current generators configured to replicate respective first and second currents from the first and second bias circuits, first and second transistors configured to transform the first and second currents into voltage samples, and first and second capacitors configured to store the voltage samples. In a sampling phase, a sampling of the first and second currents may be performed in the inner amplifier, and further, in an amplification phase, an amplification of the stored voltage samples may also be performed in the inner amplifier.

    Memory System Having Combined High Density, Low Bandwidth and Low Density, High Bandwidth Memories

    公开(公告)号:US20210125657A1

    公开(公告)日:2021-04-29

    申请号:US17140753

    申请日:2021-01-04

    申请人: Apple Inc.

    摘要: In an embodiment, a memory system may include at least two types of DRAM, which differ in at least one characteristic. For example, one DRAM type may be a high density DRAM, while another DRAM type may have lower density but may also have lower latency and higher bandwidth than the first DRAM type. DRAM of the first type may be on one or more first integrated circuits and DRAM of the second type may be on one or more second integrated circuits. In an embodiment, the first and second integrated circuits may be coupled together in a stack. The second integrated circuit may include a physical layer circuit to couple to other circuitry (e.g. an integrated circuit having a memory controller, such as a system on a chip (SOC)), and the physical layer circuit may be shared by the DRAM in the first integrated circuits.

    Countering digit line coupling in memory arrays

    公开(公告)号:US10943624B1

    公开(公告)日:2021-03-09

    申请号:US16541940

    申请日:2019-08-15

    发明人: Scott J. Derner

    摘要: Apparatuses and methods can be related to countering noise at a memory array. Countering noise can include enable switches to connect third digit lines of the first array adjacent to the respective first digit lines to fourth digit lines of the second array adjacent to the reference digit lines such that the reference digit lines experience a same amount of digit line coupling noise as the first digit lines experience.

    COUNTERING DIGIT LINE COUPLING IN MEMORY ARRAYS

    公开(公告)号:US20210050038A1

    公开(公告)日:2021-02-18

    申请号:US16541940

    申请日:2019-08-15

    发明人: Scott J. Derner

    摘要: Apparatuses and methods can be related to countering noise at a memory array. Countering noise can include enable switches to connect third digit lines of the first array adjacent to the respective first digit lines to fourth digit lines of the second array adjacent to the reference digit lines such that the reference digit lines experience a same amount of digit line coupling noise as the first digit lines experience.

    Apparatus containing circuit-protection devices

    公开(公告)号:US10892259B2

    公开(公告)日:2021-01-12

    申请号:US16866723

    申请日:2020-05-05

    发明人: Michael Smith

    摘要: Apparatus having an array of memory cells might include a first transistor having a control gate, a first source/drain connected to a first contact for connection to peripheral circuitry, and a second source/drain connected to a second contact for connection to a data line selectively connected to a respective set of strings of series-connected memory cells of the array of memory cells; and a second transistor having a control gate, a first source/drain connected to the second contact, and a second source/drain connected to a third contact for connection to a common source selectively connected to each string of series-connected memory cells of the respective set of strings of series-connected memory cells for the data line.

    Memory device with bitline noise suppressing scheme

    公开(公告)号:US10861787B1

    公开(公告)日:2020-12-08

    申请号:US16534120

    申请日:2019-08-07

    摘要: Some embodiments include an integrated memory having a first bitline coupled with a first set of memory cells, and having a second bitline coupled with a second set of memory cells. The first and second bitlines are comparatively coupled through a sense amplifier. A first noise suppression line is adjacent to a region of the first bitline and extends parallel to the region of the first bitline. The first noise suppression line is electrically connected with one of the first and second bitlines and not with the other of the first and second bitlines. A second noise suppression line is adjacent to a region of the second bitline and extends parallel to the region of the second bitline. The second noise suppression line is electrically connected with the other of the first and second bitlines.