Word-line timing control in a semiconductor memory device and a memory system including the same

    公开(公告)号:US10482938B2

    公开(公告)日:2019-11-19

    申请号:US15691985

    申请日:2017-08-31

    摘要: A semiconductor memory device and method of operation that is capable of reducing disturbance of adjacent word lines. A memory cell array includes a plurality of memory cells coupled to a plurality of word-lines and a plurality of bit-lines. A first word-line, which is selected in response to an access address received from the memory controller, is enabled in response to a first command received from a memory controller, and the first word-line is disabled internally in the semiconductor memory device or in response to a disable command received from the memory controller after a reference time interval elapses. The reference time interval starts from a first time point when the first command is applied to the semiconductor memory device, and corresponds to a time interval equal to or greater than a row active time interval of the semiconductor memory device.

    Memory devices with selective error correction code
    14.
    发明授权
    Memory devices with selective error correction code 有权
    具有选择性纠错码的存储器件

    公开(公告)号:US09235466B2

    公开(公告)日:2016-01-12

    申请号:US13915179

    申请日:2013-06-11

    摘要: An error correction apparatus includes an error correction circuit configured to selectively perform error correction on a portion of data that is at least one of written to and read from a plurality of memory cells of a memory device. The portion of data is at least one of written to and read from a subset of the plurality of memory cells, and the subset includes only fail cells among the plurality of memory cells. The error correction apparatus further includes a fail address storage circuit configured to store address information for the fail cells.

    摘要翻译: 纠错装置包括:纠错电路,被配置为对存储器件的多个存储单元的至少一个写入和读出的数据的一部分进行选择性地执行纠错。 数据的部分是从多个存储器单元的子集写入和读出中的至少一个,并且该子集仅包括多个存储器单元中的故障单元。 误差校正装置还包括故障地址存储电路,其被配置为存储故障单元的地址信息。

    Memory modules and memory systems
    15.
    发明授权
    Memory modules and memory systems 有权
    内存模块和内存系统

    公开(公告)号:US09087614B2

    公开(公告)日:2015-07-21

    申请号:US14087167

    申请日:2013-11-22

    摘要: In one example embodiment, a memory module includes a plurality of memory devices and a buffer chip configured to manage the plurality of memory device. The buffer chip includes a memory management unit having an error correction unit configured to perform error correction operation on each of the plurality of memory devices. Each of the plurality of memory devices includes at least one spare column that is accessible by the memory management unit, and the memory management unit is configured to correct errors of the plurality of memory devices by selectively using the at least one spare column based on an error correction capability of the error correction unit.

    摘要翻译: 在一个示例实施例中,存储器模块包括多个存储器件和被配置为管理多个存储器件的缓冲器芯片。 缓冲器芯片包括具有错误校正单元的存储器管理单元,该单元被配置为对多个存储器件中的每一个进行纠错操作。 多个存储器设备中的每一个包括至少一个可由存储器管理单元访问的备用列,并且存储器管理单元被配置为通过有选择地使用至少一个备用列来校正多个存储器件的错误, 纠错单元的纠错能力。

    Repair control circuit and semiconductor memory device including the same
    16.
    发明授权
    Repair control circuit and semiconductor memory device including the same 有权
    修理控制电路和包括其的半导体存储器件

    公开(公告)号:US09007856B2

    公开(公告)日:2015-04-14

    申请号:US13804690

    申请日:2013-03-14

    IPC分类号: G11C7/00 G11C29/04 G11C29/44

    摘要: A repair control circuit of controlling a repair operation of a semiconductor memory device includes a row matching block and a column matching block. The row matching block stores fail group information indicating one or more fail row groups among a plurality of row groups. The row groups are determined by grouping a plurality of row addresses corresponding to a plurality of wordlines. The row matching block generates a group match signal based on input row address and the fail group information, such that the group match signal indicates the fail row group including the input row address. The column matching block stores fail column addresses of the fail memory cells, and generates a repair control signal based on input column address, the group match signal and the fail column addresses, such that the repair control signal indicates whether the repair operation is executed or not.

    摘要翻译: 控制半导体存储器件的修复操作的修复控制电路包括行匹配块和列匹配块。 行匹配块存储指示多个行组中的一个或多个故障行组的故障组信息。 通过对与多个字线对应的多个行地址进行分组来确定行组。 行匹配块基于输入行地址和故障组信息生成组匹配信号,使得组匹配信号指示包括输入行地址的故障行组。 列匹配块存储故障存储器单元的故障列地址,并且基于输入列地址,组匹配信号和故障列地址生成修复控制信号,使得修复控制信号指示是否执行修复操作或 不。

    Memory modules and memory systems
    19.
    发明授权
    Memory modules and memory systems 有权
    内存模块和内存系统

    公开(公告)号:US09558805B2

    公开(公告)日:2017-01-31

    申请号:US14083033

    申请日:2013-11-18

    摘要: A memory module includes a plurality of memory devices and a buffer chip. The buffer chip manages the memory devices. The buffer chip includes a refresh control circuit that groups a plurality of memory cell rows of the memory devices into a plurality of groups according to a data retention time of tire memory cell rows. The buffer chip selectively refreshes each of the plurality of groups in each of a plurality of refresh time regions that are periodically repeated and applies respective refresh periods to the plurality of groups, respectively.

    摘要翻译: 存储器模块包括多个存储器件和缓冲器芯片。 缓冲芯片管理存储器件。 缓冲芯片包括根据轮胎存储单元行的数据保持时间将存储器件的多个存储单元行分组成多个组的刷新控制电路。 缓冲器芯片有选择地刷新周期性地重复的多个刷新时间区域中的每一个中的多个组中的每一个,并将各个刷新周期分别应用于多个组。

    Memory device selecting different column selection lines based on different offset values and memory system including the same
    20.
    发明授权
    Memory device selecting different column selection lines based on different offset values and memory system including the same 有权
    存储器件根据不同的偏移值选择不同的列选择线,包括相同的存储器系统

    公开(公告)号:US09064546B2

    公开(公告)日:2015-06-23

    申请号:US14069188

    申请日:2013-10-31

    摘要: A memory device may be provided which includes a memory cell array including a plurality of sub arrays each sub array having a plurality of memory cells connected to bit lines; an address buffer configured to receive a row address and a column address; and a column decoder configured to receive the column address from the address buffer and, for each of the sub arrays, to select a column selection line corresponding to the column address, from among a plurality of column selection lines, based on different offset values applied to the sub arrays, respectively. The selected column selection lines correspond to bit lines having different physical locations, respectively, according to the different offset values.

    摘要翻译: 可以提供一种存储器件,其包括包括多个子阵列的存储单元阵列,每个子阵列具有连接到位线的多个存储器单元; 配置为接收行地址和列地址的地址缓冲器; 以及列解码器,被配置为从地址缓冲器接收列地址,并且对于每个子阵列,基于应用的不同偏移值从多个列选择线中选择与列地址对应的列选择线 分别到子阵列。 所选择的列选择线分别对应于具有不同物理位置的位线,根据不同的偏移值。