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MEMORY SYSTEM WITH THREE MEMORY LAYERS HAVING DIFFERENT BIT PER CELL STORAGE CAPACITIES

机译:具有三个存储层的存储系统,每个单元存储容量具有不同的位

摘要

A multi-later memory and method for operation is disclosed. The memory includes three or more layers, where each layer is made up of flash memory cells having a greater bit per cell storage capacity than then prior layer. The method may include the steps of directing host data directly into a first or second layer of the multi-layer memory upon receipt depending on a condition of the data. The method may also include copying data within a respective layer in a data relocation operation to generate more free blocks of memory so that data preferably stays within each layer, as well as transferring data from one layer to the next higher bit per cell layer when layer transfer criteria are met.
机译:公开了一种多层存储器和用于操作的方法。存储器包括三层或更多层,其中每一层由闪存单元构成,该闪存单元的每单元存储容量比前一层大。该方法可以包括以下步骤:根据数据的条件,一旦接收,就将主机数据直接引导到多层存储器的第一或第二层中。该方法还可以包括在数据重定位操作中在相应层内复制数据以生成更多的空闲存储器块,使得数据优选地留在每一层内,以及当层为第一层时将数据从一层传输到每个单元层的下一个更高位。符合转移条件。

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