Input circuit of semiconductor memory device and test system having the same
    1.
    发明授权
    Input circuit of semiconductor memory device and test system having the same 有权
    半导体存储器件的输入电路和具有该半导体存储器件的测试系统

    公开(公告)号:US07587645B2

    公开(公告)日:2009-09-08

    申请号:US11690092

    申请日:2007-03-22

    IPC分类号: G01R31/28

    摘要: An input circuit of a semiconductor memory device includes a data input circuit and a data pattern setting circuit. The data input circuit receives first data, and generates second data by buffering the first data, sampling buffered first data responsive to a write data strobe (WDQS) signal, and parallelizing sampled data. The data pattern setting circuit sets a pattern of the second data responsive to a test mode signal and a data pattern select signal to generate third data. Accordingly, the semiconductor memory device including the input circuit may generate data of various patterns in a test mode, and may perform a high-speed test using a low-speed tester.

    摘要翻译: 半导体存储器件的输入电路包括数据输入电路和数据图形设定电路。 数据输入电路接收第一数据,并通过缓冲第一数据产生第二数据,响应于写入数据选通(WDQS)信号采样缓冲的第一数据,并且并行采样数据。 数据模式设置电路响应于测试模式信号和数据模式选择信号设置第二数据的模式以产生第三数据。 因此,包括输入电路的半导体存储器件可以在测试模式下生成各种图案的数据,并且可以使用低速测试器进行高速测试。

    INPUT CIRCUIT OF SEMICONDUCTOR MEMORY DEVICE AND TEST SYSTEM HAVING THE SAME
    2.
    发明申请
    INPUT CIRCUIT OF SEMICONDUCTOR MEMORY DEVICE AND TEST SYSTEM HAVING THE SAME 有权
    半导体存储器件的输入电路和具有该半导体存储器件的测试系统

    公开(公告)号:US20070234165A1

    公开(公告)日:2007-10-04

    申请号:US11690092

    申请日:2007-03-22

    IPC分类号: G01R31/28 G06F11/00

    摘要: An input circuit of a semiconductor memory device includes a data input circuit and a data pattern setting circuit. The data input circuit receives first data, and generates second data by buffering the first data, sampling buffered first data responsive to a write data strobe (WDQS) signal, and parallelizing sampled data. The data pattern setting circuit sets a pattern of the second data responsive to a test mode signal and a data pattern select signal to generate third data. Accordingly, the semiconductor memory device including the input circuit may generate data of various patterns in a test mode, and may perform a high-speed test using a low-speed tester.

    摘要翻译: 半导体存储器件的输入电路包括数据输入电路和数据图形设定电路。 数据输入电路接收第一数据,并通过缓冲第一数据产生第二数据,响应于写入数据选通(WDQS)信号采样缓冲的第一数据,并且并行采样数据。 数据模式设置电路响应于测试模式信号和数据模式选择信号设置第二数据的模式以产生第三数据。 因此,包括输入电路的半导体存储器件可以在测试模式下生成各种图案的数据,并且可以使用低速测试器进行高速测试。

    Generation of test mode signals in memory device with minimized wiring
    3.
    发明授权
    Generation of test mode signals in memory device with minimized wiring 失效
    在最小化布线的情况下在存储器件中产生测试模式信号

    公开(公告)号:US07334169B2

    公开(公告)日:2008-02-19

    申请号:US11151053

    申请日:2005-06-13

    IPC分类号: G01R31/28

    CPC分类号: G11C29/46 G01R31/31701

    摘要: A memory device includes a plurality of test mode signal generating units and a plurality of test circuits. Each test mode signal generating unit generates a respective test mode signal for a respective test circuit. The test mode signal generating units generate the test mode signals in series for the test circuits. Each test mode signal generating unit may be disposed within a respective test circuit such that wiring is not necessary from the source of the test mode signals to the test circuits.

    摘要翻译: 存储器件包括多个测试模式信号发生单元和多个测试电路。 每个测试模式信号产生单元为相应的测试电路产生相应的测试模式信号。 测试模式信号发生单元为测试电路产生串联的测试模式信号。 每个测试模式信号产生单元可以设置在相应的测试电路内,使得不需要从测试模式信号的源到测试电路的布线。

    Integrated circuit devices having multiple precharge circuits and methods of operating the same
    4.
    发明授权
    Integrated circuit devices having multiple precharge circuits and methods of operating the same 失效
    具有多个预充电电路的集成电路装置及其操作方法

    公开(公告)号:US07130232B2

    公开(公告)日:2006-10-31

    申请号:US10744179

    申请日:2003-12-23

    IPC分类号: G11C7/12

    CPC分类号: G11C7/1048 G11C11/4096

    摘要: Integrated circuit devices are provided including a pair of differential I/O lines and a driver circuit. The driver circuit is configured to drive the pair of differential I/O lines responsive to a write command signal. First and second precharge circuits are also provided. The first precharge circuit is configured to precharge the pair of differential I/O lines to a first voltage during a first mode of operation responsive to an active command signal. The second precharge circuit is configured to precharge the pair of differential I/O lines to a second voltage, lower than the first voltage, during a second mode of operation responsive to the active command signal. Related methods of operating integrated circuit devices are also provided.

    摘要翻译: 集成电路器件包括一对差分I / O线和驱动电路。 驱动器电路被配置为响应于写入命令信号驱动该对差分I / O线。 还提供了第一和第二预充电电路。 第一预充电电路被配置为响应于有效命令信号在第一操作模式期间将一对差分I / O线预充电到第一电压。 第二预充电电路被配置为响应于激活的命令信号在第二操作模式期间将该对差分I / O线预充电到低于第一电压的第二电压。 还提供了操作集成电路器件的相关方法。

    Semiconductor memory device for controlling operation of delay-locked loop circuit
    5.
    发明授权
    Semiconductor memory device for controlling operation of delay-locked loop circuit 有权
    用于控制延迟锁定环路电路的半导体存储器件

    公开(公告)号:US08730751B2

    公开(公告)日:2014-05-20

    申请号:US13467188

    申请日:2012-05-09

    IPC分类号: G11C7/00

    摘要: A semiconductor memory device for controlling an operation of a delay-locked loop (DLL) circuit is provided. The semiconductor memory device includes a DLL circuit that receives an external clock signal and that performs a locking operation on the external clock signal and an internal clock signal, thereby obtaining a locked state. A control unit controls the DLL circuit to constantly maintain the locked state during an updating period of an auto-refresh period of an auto-refresh operation for refreshing memory banks.

    摘要翻译: 提供一种用于控制延迟锁定环(DLL)电路的操作的半导体存储器件。 半导体存储器件包括DLL电路,其接收外部时钟信号,并且对外部时钟信号和内部时钟信号执行锁定操作,由此获得锁定状态。 控制单元控制DLL电路在刷新存储体的自动刷新操作的自动刷新周期的更新周期期间始终保持锁定状态。

    SEMICONDUCTOR MEMORY DEVICE FOR CONTROLLING OPERATION OF DELAY-LOCKED LOOP CIRCUIT
    6.
    发明申请
    SEMICONDUCTOR MEMORY DEVICE FOR CONTROLLING OPERATION OF DELAY-LOCKED LOOP CIRCUIT 有权
    用于控制延迟环路电路操作的半导体存储器件

    公开(公告)号:US20120218848A1

    公开(公告)日:2012-08-30

    申请号:US13467188

    申请日:2012-05-09

    IPC分类号: G11C7/00

    摘要: A semiconductor memory device for controlling an operation of a delay-locked loop (DLL) circuit is provided. The semiconductor memory device includes a DLL circuit that receives an external clock signal and that performs a locking operation on the external clock signal and an internal clock signal, thereby obtaining a locked state. A control unit controls the DLL circuit to constantly maintain the locked state during an updating period of an auto-refresh period of an auto-refresh operation for refreshing memory banks.

    摘要翻译: 提供一种用于控制延迟锁定环(DLL)电路的操作的半导体存储器件。 半导体存储器件包括DLL电路,其接收外部时钟信号,并且对外部时钟信号和内部时钟信号执行锁定操作,由此获得锁定状态。 控制单元控制DLL电路在刷新存储体的自动刷新操作的自动刷新周期的更新周期期间始终保持锁定状态。

    Semiconductor device, test system and method of testing on die termination circuit
    7.
    发明授权
    Semiconductor device, test system and method of testing on die termination circuit 有权
    半导体器件,测试系统和芯片终端电路测试方法

    公开(公告)号:US07612578B2

    公开(公告)日:2009-11-03

    申请号:US11585615

    申请日:2006-10-24

    摘要: A semiconductor device, a test system and a method of testing an on die termination (ODT) circuit are disclosed. The semiconductor device includes an ODT circuit, a termination impedance control circuit and a boundary scan circuit. The termination impedance control circuit generates termination impedance control signals in response to a test mode command. The ODT circuit is coupled to the plurality of input/output pads and generates a plurality of termination impedances in response to the impedance control signals. The boundary scan circuit stores the termination impedances to output the stored termination impedances. Thus, the semiconductor device may test an ODT circuit accurately by using a smaller number of pins and may reduce a required time for testing the semiconductor device.

    摘要翻译: 公开了半导体器件,测试系统和测试芯片端接(ODT)电路的方法。 半导体器件包括ODT电路,终端阻抗控制电路和边界扫描电路。 终端阻抗控制电路响应于测试模式命令产生终止阻抗控制信号。 ODT电路耦合到多个输入/输出焊盘,并且响应于阻抗控制信号产生多个终端阻抗。 边界扫描电路存储终端阻抗以输出存储的终端阻抗。 因此,半导体器件可以通过使用较少数量的引脚来精确地测试ODT电路,并且可以减少测试半导体器件所需的时间。

    Generation of test mode signals in memory device with minimized wiring
    8.
    发明申请
    Generation of test mode signals in memory device with minimized wiring 失效
    在最小化布线的情况下在存储器件中产生测试模式信号

    公开(公告)号:US20060059398A1

    公开(公告)日:2006-03-16

    申请号:US11151053

    申请日:2005-06-13

    IPC分类号: G01R31/28 G06F11/00

    CPC分类号: G11C29/46 G01R31/31701

    摘要: A memory device includes a plurality of test mode signal generating units and a plurality of test circuits. Each test mode signal generating unit generates a respective test mode signal for a respective test circuit. The test mode signal generating units generate the test mode signals in series for the test circuits. Each test mode signal generating unit may be disposed within a respective test circuit such that wiring is not necessary from the source of the test mode signals to the test circuits.

    摘要翻译: 存储器件包括多个测试模式信号发生单元和多个测试电路。 每个测试模式信号产生单元为相应的测试电路产生相应的测试模式信号。 测试模式信号发生单元为测试电路产生串联的测试模式信号。 每个测试模式信号产生单元可以设置在相应的测试电路内,使得不需要从测试模式信号的源到测试电路的布线。