Nonvolatile semiconductor memory device with first and second read modes
    1.
    发明授权
    Nonvolatile semiconductor memory device with first and second read modes 失效
    具有第一和第二读取模式的非易失性半导体存储器件

    公开(公告)号:US06842377B2

    公开(公告)日:2005-01-11

    申请号:US10412646

    申请日:2003-04-11

    摘要: A nonvolatile semiconductor memory device with a plurality of read modes switchably built therein is provided. This nonvolatile semiconductor memory device is the one that has a memory cell array in which electrically rewritable nonvolatile memory cells are laid out and a read circuit which performs data readout of the memory cell array. The nonvolatile semiconductor memory device has a first read mode and a second read mode. The first read mode is for reading data by means of parallel data transfer of the same bit number when sending data from the memory cell array through the read circuit up to more than one external terminal. The second read mode is for performing parallel data transfer of a greater bit number than that of the first read mode when sending data from the memory cell array to the read circuit while performing data transfer of a smaller bit number than the bit number when sending data from the read circuit up to the external terminal.

    摘要翻译: 提供了一种具有可切换地构建的多个读取模式的非易失性半导体存储器件。 这种非易失性半导体存储器件是具有其中布置有电可重写非易失性存储单元的存储单元阵列,以及执行存储单元阵列的数据读出的读电路。 非易失性半导体存储器件具有第一读取模式和第二读取模式。 第一读取模式是通过从存储单元阵列通过读取电路向多于一个的外部端子发送数据时,通过相同位数的并行数据传输来读取数据。 第二读取模式用于在将数据从存储器单元阵列发送到读取电路时执行比第一读取模式更大位数的并行数据传输,同时在发送数据时执行比位数更小位数的数据传输 从读取电路到外部端子。

    Nonvolatile semiconductor memory
    2.
    发明授权
    Nonvolatile semiconductor memory 失效
    非易失性半导体存储器

    公开(公告)号:US06711066B2

    公开(公告)日:2004-03-23

    申请号:US10198170

    申请日:2002-07-19

    IPC分类号: G11C700

    摘要: A potential generating circuit generates two types of erase verify threshold values EVT1 and EVT2. These values satisfy the relationship of EVT2=EVT1+(OEVT−EVTL). OEVT is an over-erase verify threshold value. While the erase verify threshold value is set at EVT2, the lower limit of a threshold voltage distribution after data erase is higher than OEVT. EVTL is the lower limit of the threshold voltage distribution after data erase while the erase verify threshold value is set at EVT1 and is lower than OEVT. The erase verify threshold values EVT1 and EVT2 are switched according to an operation mode. During a write/erase test, for example, the erase verify threshold value is set at EVT2. On the other hand, during the normal operation, the erase verify threshold value is set at EVT1.

    摘要翻译: 电位产生电路产生两种类型的擦除验证阈值EVT1和EVT2。 这些值满足EVT2 = EVT1 +(OEVT-EVTL)的关系。 OEVT是过擦除验证阈值。 当擦除验证阈值设定为EVT2时,数据擦除后阈值电压分布的下限高于OEVT。 EVTL是数据擦除后的阈值电压分布的下限,擦除验证阈值设定为EVT1,低于OEVT。 根据操作模式切换擦除验证阈值EVT1和EVT2。 在写入/擦除测试期间,例如,擦除验证阈值被设置为EVT2。 另一方面,在正常操作期间,将擦除验证阈值设置为EVT1。

    Nonvolatile semiconductor memory
    3.
    发明授权
    Nonvolatile semiconductor memory 失效
    非易失性半导体存储器

    公开(公告)号:US06442080B2

    公开(公告)日:2002-08-27

    申请号:US09812572

    申请日:2001-03-21

    IPC分类号: G11C1140

    摘要: A potential generating circuit generates two types of erase verify threshold values EVT1 and EVT2. These values satisfy the relationship of EVT2=EVT1+(OEVT−EVTL). OEVT is an over-erase verify threshold value. While the erase verify threshold value is set at EVT2, the lower limit of a threshold voltage distribution after data erase is higher than OEVT. EVTL is the lower limit of the threshold voltage distribution after data erase while the erase verify threshold value is set at EVT1 and is lower than OEVT. The erase verify threshold values EVT1 and EVT2 are switched according to an operation mode. During a write/erase test, for example, the erase verify threshold value is set at EVT2. On the other hand, during the normal operation, the erase verify threshold value is set at EVT1.

    摘要翻译: 电位产生电路产生两种类型的擦除验证阈值EVT1和EVT2。 这些值满足EVT2 = EVT1 +(OEVT-EVTL)的关系。 OEVT是过擦除验证阈值。 当擦除验证阈值设定为EVT2时,数据擦除后阈值电压分布的下限高于OEVT。 EVTL是数据擦除后的阈值电压分布的下限,擦除验证阈值设定为EVT1,低于OEVT。 根据操作模式切换擦除验证阈值EVT1和EVT2。 在写入/擦除测试期间,例如,擦除验证阈值被设置为EVT2。 另一方面,在正常操作期间,将擦除验证阈值设置为EVT1。

    Nonvolatile semiconductor memory
    4.
    发明授权
    Nonvolatile semiconductor memory 有权
    非易失性半导体存储器

    公开(公告)号:US06236609B1

    公开(公告)日:2001-05-22

    申请号:US09527513

    申请日:2000-03-16

    IPC分类号: G11C1140

    摘要: A potential generating circuit generates two types of erase verify threshold values EVT1 and EVT2. These values satisfy the relationship of EVT2=EVT1+(OEVT−EVTL). OEVT is an over-erase verify threshold value. While the erase verify threshold value is set at EVT2, the lower limit of a threshold voltage distribution after data erase is higher than OEVT. EVTL is the lower limit of the threshold voltage distribution after data erase while the erase verify threshold value is set at EVT1 and is lower than OEVT. The erase verify threshold values EVT1 and EVT2 are switched according to an operation mode. During a write/erase test, for example, the erase verify threshold value is set at EVT2. On the other hand, during the normal operation, the erase verify threshold value is set at EVT1.

    摘要翻译: 电位产生电路产生两种类型的擦除验证阈值EVT1和EVT2。 这些值满足EVT2 = EVT1 +(OEVT-EVTL)的关系。 OEVT是过擦除验证阈值。 当擦除验证阈值设定为EVT2时,数据擦除后阈值电压分布的下限高于OEVT。 EVTL是数据擦除后的阈值电压分布的下限,擦除验证阈值设定为EVT1,低于OEVT。 根据操作模式切换擦除验证阈值EVT1和EVT2。 在写入/擦除测试期间,例如,擦除验证阈值被设置为EVT2。 另一方面,在正常操作期间,将擦除验证阈值设置为EVT1。

    Nonvolatile semiconductor memory
    5.
    发明授权
    Nonvolatile semiconductor memory 有权
    非易失性半导体存储器

    公开(公告)号:US06856548B2

    公开(公告)日:2005-02-15

    申请号:US10756267

    申请日:2004-01-14

    摘要: A potential generating circuit generates two types of erase verify threshold values EVT1 and EVT2. These values satisfy the relationship of EVT2=EVT1+(OEVT−EVTL). OEVT is an over-erase verify threshold value. While the erase verify threshold value is set at EVT2, the lower limit of a threshold voltage distribution after data erase is higher than OEVT. EVTL is the lower limit of the threshold voltage distribution after data erase while the erase verify threshold value is set at EVT1 and is lower than OEVT. The erase verify threshold values EVT1 and EVT2 are switched according to an operation mode. During a write/erase test, for example, the erase verify threshold value is set at EVT2. On the other hand, during the normal operation, the erase verify threshold value is set at EVT1.

    摘要翻译: 电位产生电路产生两种类型的擦除验证阈值EVT1和EVT2。 这些值满足EVT2 = EVT1 +(OEVT-EVTL)的关系。 OEVT是过擦除验证阈值。 当擦除验证阈值设定为EVT2时,数据擦除后阈值电压分布的下限高于OEVT。 EVTL是数据擦除后的阈值电压分布的下限,擦除验证阈值设定为EVT1,低于OEVT。 根据操作模式切换擦除验证阈值EVT1和EVT2。 在写入/擦除测试期间,例如,擦除验证阈值被设置为EVT2。 另一方面,在正常操作期间,将擦除验证阈值设置为EVT1。

    Semiconductor device that enables simultaneous read and write/read operation
    6.
    发明授权
    Semiconductor device that enables simultaneous read and write/read operation 有权
    实现同时读/写操作的半导体器件

    公开(公告)号:US07345919B2

    公开(公告)日:2008-03-18

    申请号:US11453830

    申请日:2006-06-16

    IPC分类号: G11C16/04

    摘要: A semiconductor device includes a memory cell array including a plurality of cores, each of said cores including one block or a plurality of blocks. The semiconductor device further includes a first power supply line which is provided commonly for said plurality of cores and which provides a data reading power supply potential; a second power supply line which is provided commonly for said plurality of cores and which provides a data writing or erasing power supply potential; and a power supply line switching circuit which is provided for each of said plurality of cores and which selectively connects a corresponding one of said plurality of cores to said first power supply line or said second power supply line in accordance with whether said corresponding one of said plurality of cores is in a data read mode or a data write or erase mode.

    摘要翻译: 半导体器件包括包括多个核的存储单元阵列,每个所述核包括一个块或多个块。 所述半导体器件还包括第一电源线,所述第一电源线通常为所述多个芯提供,并提供数据读取电源电位; 第二电源线,其为所述多个核心共同提供,并且提供数据写入或擦除电源电位; 以及电源线切换电路,其被设置用于所述多个芯中的每一个,并且根据所述多个核中的所述相应一个选择性地将所述多个核中的相应一个核连接到所述第一电源线或所述第二电源线 多个核心处于数据读取模式或数据写入或擦除模式。

    Semiconductor memory device having redundant circuitry for replacing defective memory cell
    7.
    发明授权
    Semiconductor memory device having redundant circuitry for replacing defective memory cell 有权
    具有用于替换有缺陷的存储单元的冗余电路的半导体存储器件

    公开(公告)号:US06532181B2

    公开(公告)日:2003-03-11

    申请号:US09963404

    申请日:2001-09-27

    IPC分类号: G11C700

    摘要: A nonvolatile semiconductor memory includes a memory cell array and a redundant cell array, and while a data write operation or a data erase operation is carried out in one of banks in the memory cell array, a data read operation can be carried out in the other banks. The redundant cell array has one or more spare blocks and is provided independently of the banks to relieve a defective memory cell of the memory cell array by substituting the spare block for a defective memory block in any of the blocks. The memory block is active when an access block address to be accessed in the memory cell array in the data write or erase operation or the data read operation does not coincide with the defective block address in the defective address storing circuit, whereas the spare block is active when the access block address coincides with the defective block address in the defective address storing circuit.

    摘要翻译: 非易失性半导体存储器包括存储单元阵列和冗余单元阵列,并且在存储单元阵列中的一个存储体中进行数据写入操作或数据擦除操作时,可以在另一个存储单元阵列中执行数据读取操作 银行。 冗余单元阵列具有一个或多个备用块,并且独立于存储体提供,以通过将备用块替换为任何块中的有缺陷的存储块来解除存储单元阵列的有缺陷的存储单元。 当在数据写入或擦除操作或数据读取操作中要存储在存储单元阵列中的访问块地址与缺陷地址存储电路中的有缺陷块地址不一致时,存储块有效,而备用块是 当访问块地址与缺陷地址存储电路中的有缺陷的块地址一致时有效。

    Semiconductor device that enables simultaneous read and write/erase operation
    8.
    发明授权
    Semiconductor device that enables simultaneous read and write/erase operation 有权
    实现同时读/写/擦除操作的半导体器件

    公开(公告)号:US06377502B1

    公开(公告)日:2002-04-23

    申请号:US09563348

    申请日:2000-05-03

    IPC分类号: G11C800

    摘要: A memory cell array 1 has the arrangement of a plurality of cores, each of which comprises one block or a set of a plurality of blocks, each block defining a range of memory cells serving as a unit of data erase. A core selecting part for selecting an optional number of cores to write/erase data is provided for writing data in memory cells in cores selected on the basis of a write command and for erasing data from selected blocks in cores selected on the basis of an erase command. Thus, there is realized a free core system capable of reading data out from memory cells in unselected cores while writing/erasing data in cores selected by the core selecting part.

    摘要翻译: 存储单元阵列1具有多个核心的布置,每个核心包括一个块或一组多个块,每个块定义用作数据擦除单位的存储单元的范围。 提供用于选择写入/擦除数据的可选数量的核心的核心选择部分,用于将数据写入基于写入命令选择的核心的存储器单元中,并且用于从基于擦除选择的核心中的所选择的块中擦除数据 命令。 因此,实现了一种自由核心系统,其能够在由核心选择部分选择的核心中写入/擦除数据时,从未选择的核心中的存储器单元读出数据。