Wide dynamic range and high speed voltage mode sensing for a multilevel digital non-volatile memory
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Accused Products
Abstract
A high speed voltage mode sensing is provided for a digital multibit non-volatile memory integrated system. An embodiment has a local source follower stage followed by a high speed common source stage. Another embodiment has a local source follower stage followed by a high speed source follower stage. Another embodiment has a common source stage followed by a source follower. An auto zeroing scheme is used. A capacitor sensing scheme is used. Multilevel parallel operation is described.
107 Citations
144 Claims
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1-52. -52. (canceled)
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53. A data storage system comprising:
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a plurality of reference memory subarrays, each reference memory subarray comprising a plurality of reference memory cells, each memory cell being configurable to store one of a plurality of reference signal levels; and
a plurality of reference sense amplifiers, each reference sense amplifier being selectively coupled to a corresponding subarray;
a capacitor configured to capacitively sense content of a memory cell. - View Dependent Claims (127, 128, 129, 130, 131, 132, 133, 134, 135)
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54. (canceled)
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55. A data storage system comprising:
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a plurality of reference memory subarrays, each reference memory subarray comprising a plurality of reference memory cells, each reference memory cell being configurable to store one of a plurality of reference signal levels; and
a plurality of reference sense amplifiers, each sense reference amplifier being selectively coupled to a reference memory subarray to sense with offset autozeroing content of a reference memory cell. - View Dependent Claims (136, 137, 138, 139, 140, 141, 142, 143, 144)
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56-126. -126. (canceled)
Specification