Invention Grant
US08351269B2 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

  • Patent Title: Method for non-volatile memory with background data latch caching during read operations
  • Patent Title (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
  • Application No.: US13267689
    Application Date: 2011-10-06
  • Publication No.: US08351269B2
    Publication Date: 2013-01-08
  • Inventor: Yan Li
  • Applicant: Yan Li
  • Applicant Address: US TX Plano
  • Assignee: SanDisk Technologies, Inc.
  • Current Assignee: SanDisk Technologies, Inc.
  • Current Assignee Address: US TX Plano
  • Agency: Davis Wright Tremaine LLP
  • Main IPC: G11C16/06
  • IPC: G11C16/06
Method for non-volatile memory with background data latch caching during read operations
Abstract:
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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