Invention Grant
- Patent Title: Data conversion with data path circuits for use in double sense amp architecture with fractional bit assignment in non-volatile memory structures
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Application No.: US17511749Application Date: 2021-10-27
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Publication No.: US11776640B2Publication Date: 2023-10-03
- Inventor: Kei Kitamura , Yuki Fujita , Kyosuke Matsumoto , Masahiro Kano , Minoru Yamashita , Ryuji Yamashita , Shuzo Otsuka
- Applicant: SanDisk Technologies LLC
- Applicant Address: US TX Addison
- Assignee: SanDisk Technologies LLC
- Current Assignee: SanDisk Technologies LLC
- Current Assignee Address: US TX Addison
- Agency: DICKINSON WRIGHT PLLC
- Agent Steven C. Hurles
- Main IPC: G11C16/26
- IPC: G11C16/26 ; G11C16/34 ; G11C16/04 ; G06F3/06 ; G11C16/08

Abstract:
A method for programming a non-volatile memory structure, comprises initiating a two-dimensional fractional number of bits-per-cell programming scheme of a plurality of memory cells, wherein the memory structure comprises: (1) a first memory array comprising a first population of memory cells and the associated peripheral circuitry disposed below the first population of cells, (2) a second memory array positioned above the first memory array and comprising a second population of memory cells and associated peripheral circuitry disposed above the second population of cells, and (3) a data bus tap electrically coupling the first and second memory arrays. Further, the method comprises: (1) storing input data in data latches associated with the first array and with the second array. Additionally, the method comprises converting the stored data using data conversion logic implemented by a data path circuit of the first and second arrays and rewriting the converted data to the latches.
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