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    • 5. 发明申请
    • METHOD OF PROGRAMMING MULTI-LEVEL CELLS AND NON-VOLATILE MEMORY DEVICE INCLUDING THE SAME
    • 编程多级电池的方法和包括其的非易失性存储器件
    • US20080144370A1
    • 2008-06-19
    • US11940526
    • 2007-11-15
    • Ki-Tae PARKYeong-Taek LEEKi-Nam KIMDoo-Gon KIM
    • Ki-Tae PARKYeong-Taek LEEKi-Nam KIMDoo-Gon KIM
    • G11C16/04
    • G11C11/5628G11C11/5642G11C16/0483G11C16/3459G11C2211/5621G11C2216/14
    • A non-volatile memory device has multi-level cells (MLCs), which are programmed such that one page is written in the MLCs having previous states corresponding to at least one previous page. The non-volatile memory device includes a memory cell array, a row selection circuit and a page buffer block. The memory cell array includes the MLCs commonly coupled to a selected word line and respectively coupled to bitlines. The row selection circuit applies sequentially-decreasing read voltages to the selected wordline to read the previous states of the MLCs, and sequentially-decreasing verification voltages to the selected wordline to program states of the MLCs sequentially from a state having a highest threshold voltage to a state having a lowest threshold voltage. The page buffer block loads data corresponding to the one page, and controls a bitline voltage based on each previous state and each bit of the loaded data.
    • 非易失性存储器件具有多级单元(MLC),其被编程为使得一页被写入具有对应于至少一个先前页的先前状态的MLC。 非易失性存储器件包括存储单元阵列,行选择电路和页缓冲块。 存储单元阵列包括通常耦合到所选字线并分别耦合到位线的MLC。 行选择电路对所选择的字线应用顺序递减的读取电压以读取MLC的先前状态,并且顺序地减小对所选字线的验证电压,以从具有最高阈值电压的状态顺序地编程MLC的状态, 状态具有最低阈值电压。 页面缓冲区块加载对应于一页的数据,并且基于每个先前状态和加载的数据的每个位来控制位线电压。