公开(公告)号：US20080137443A1

公开(公告)日：2008-06-12

申请号：US11941101

申请日：2007-11-16

申请人： Dong Hyuk CHAE ,  Young Ho LIM

发明人： Dong Hyuk CHAE ,  Young Ho LIM

IPC分类号： G11C16/26

CPC分类号： G11C11/5642 ,  G11C16/0483 ,  G11C16/26 ,  G11C2211/5642

摘要： A nonvolatile semiconductor memory device is provided which includes a memory array, a page buffer, and a row decoder. The memory array includes a plurality of nonvolatile memory cells, a bit line, and a word line, and the row decoder driven to control the word line of the memory array. The page buffer is electrically connected to the bit line and includes a main data latch and a sub-data latch. The page buffer, which is configured such that flipping of the man data latch is inhibited according to a logic state of the sub-data latch, further includes a main latch block, a sub-latch block, and a latch control block. The main latch block drives the main data latch and maps a logic state of the main data latch to a threshold voltage of a corresponding memory cell through the bit line. The sub-latch block drives the sub-data latch, where the sub-data latch is flipped depending on the voltage level of the bit line. The latch control block selectively flips the main data latch depending on the voltage level of the bit line, where the latch control block is disabled depending on a logic state of the sub-data latch.

摘要翻译： 提供一种包括存储器阵列，页缓冲器和行解码器的非易失性半导体存储器件。 存储器阵列包括多个非易失性存储器单元，位线和字线，并且行解码器被驱动以控制存储器阵列的字线。 页缓冲器电连接到位线，并包括主数据锁存器和子数据锁存器。 根据子数据锁存器的逻辑状态禁止翻转人数据锁存器的页缓冲器还包括主锁存块，子锁存块和锁存控制块。 主锁存块驱动主数据锁存器，并通过位线将主数据锁存器的逻辑状态映射到相应存储器单元的阈值电压。 子锁存块驱动子数据锁存器，其中子数据锁存器根据位线的电压电平翻转。 锁存控制块根据位线的电压电平有选择地翻转主数据锁存器，根据子数据锁存器的逻辑状态，禁止锁存器控制块。