发明授权
US07733703B2 Method for non-volatile memory with background data latch caching during read operations
有权
在读取操作期间具有背景数据锁存缓存的非易失性存储器的方法
- 专利标题: Method for non-volatile memory with background data latch caching during read operations
- 专利标题(中): 在读取操作期间具有背景数据锁存缓存的非易失性存储器的方法
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申请号: US12263658申请日: 2008-11-03
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公开(公告)号: US07733703B2公开(公告)日: 2010-06-08
- 发明人: Yan Li
- 申请人: Yan Li
- 申请人地址: US CA Milpitas
- 专利权人: Sandisk Corporation
- 当前专利权人: Sandisk Corporation
- 当前专利权人地址: US CA Milpitas
- 代理机构: Davis Wright Tremaine LLP
- 主分类号: G11C16/06
- IPC分类号: G11C16/06
摘要:
Part of the latency from memory read or write operations is for data to be input to or output from the data latches of the memory via an I/O bus. Methods and circuitry are present for improving performance in non-volatile memory devices by allowing the memory to perform some of these data caching and transfer operations in the background while the memory core is busy with a read operation. A read caching scheme is implemented for memory cells where more than one bit is sensed together, such as sensing all of the n bits of each memory cell of a physical page together. The n-bit physical page of memory cells sensed correspond to n logical binary pages, one for each of the n-bits. Each of the binary logical pages is being output in each cycle, while the multi-bit sensing of the physical page is performed every nth cycles.
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