Using embedded switches for reducing capacitive loading on a memory system
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsChia-Ta Yu, Chia-En Huang, Sai-Hooi Yeong, Yih Wang, Yi-Ching Liu
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Abstract
One aspect of this description relates to a memory array. In some embodiments, the memory array includes a first memory cell coupled between a first local select line and a first local bit line, a second memory cell coupled between a second local select line and a second local bit line, a first switch coupled to a global bit line, a second switch coupled between the first local bit line and the first switch, and a third switch coupled between the second local select line and the first switch.
Claims20
A memory array comprising:
- a bit-cell array coupled between a local select line and a local bit line;
- first selectors coupled to a global select line;
- second selectors coupled between the bit-cell array and the first selectors;
- third selectors coupled to a global bit line;
- and
- fourth selectors coupled between the bit-cell array and the third selectors.
A memory array comprising:
- a first bit-cell array coupled to a first local bit line;
- a second bit-cell array coupled to a second local bit line;
- first switches and second switches coupled in parallel and further coupled to a global bit line;
- third switches coupled between the first bit-cell array and the first switches;
- and
- fourth switches coupled between the second bit-cell array and the second switches.
A memory system comprising:
- a bit-cell array coupled between a local select line and a local bit line;
- first selectors coupled to a global select line;
- second selectors coupled between the bit-cell array and the first selectors;
- third selectors coupled to a global bit line;
- fourth selectors coupled between the bit-cell array and the third selectors;
- and
- a controller coupled to the bit-cell array, the controller configured to select at least one of the first selectors and the third selectors.
Dependencies are inferred from the claim text.