Apparatus and method for hierarchical decoding of dense memory arrays using multiple levels of multiple-headed decoders
First Claim
1. An integrated circuit comprising:
- a memory array comprising array lines of first and second types coupled to memory cells;
a first hierarchical decoder circuit for decoding address information and selecting one or more array lines of the first type, said first hierarchical decoder circuit comprising at least two hierarchical levels of multi-headed decoder circuits.
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Abstract
A memory array comprising array lines of first and second types coupled to memory cells includes a first hierarchical decoder circuit for decoding address information and selecting one or more array lines of the first type. The first hierarchical decoder circuit includes at least two hierarchical levels of multi-headed decoder circuits. The first hierarchical decoder circuit may include a first-level decoder circuit for decoding a plurality of address signal inputs and generating a plurality of first-level decoded outputs, a plurality of second-level multi-headed decoder circuits, each respective one coupled to a respective first-level decoded output, each for providing a respective plurality of second-level decoded outputs, and a plurality of third-level multi-headed decoder circuits, each respective one coupled to a respective second-level decoded output, each for providing a respective plurality of third-level decoded outputs coupled to the memory array.
66 Citations
41 Claims
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1. An integrated circuit comprising:
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a memory array comprising array lines of first and second types coupled to memory cells; a first hierarchical decoder circuit for decoding address information and selecting one or more array lines of the first type, said first hierarchical decoder circuit comprising at least two hierarchical levels of multi-headed decoder circuits. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification