Non-volatile memory bank and page buffer therefor
First Claim
1. A memory bank comprising:
- a first memory sector having memory cells connected to first bitlines and first wordlines, the first bitlines being arranged as m segments where m is an integer value greater than 0;
a second memory sector having memory cells connected to second bitlines and second wordlines, the second bitlines being arranged as m segments;
a page buffer disposed between the first memory sector and the second memory sector for selectively coupling one of the first bitlines and the second bitlines of each of the m segments to a predetermined number of datelines.
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Abstract
A memory system having a serial data interface and a serial data path core for receiving data from and for providing data to at least one memory bank as a serial bitstream. The memory bank is divided into two halves, where each half is divided into upper and lower sectors. Each sector provides data in parallel to a shared two-dimensional page buffer with an integrated self column decoding circuit. A serial to parallel data converter within the memory bank couples the parallel data from either half to the serial data path core. The shared two-dimensional page buffer with the integrated self column decoding circuit minimizes circuit and chip area overhead for each bank, and the serial data path core reduces chip area typically used for routing wide data buses. Therefore a multiple memory bank system is implemented without a significant corresponding chip area increase when compared to a single memory bank system having the same density.
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Citations
25 Claims
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1. A memory bank comprising:
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a first memory sector having memory cells connected to first bitlines and first wordlines, the first bitlines being arranged as m segments where m is an integer value greater than 0; a second memory sector having memory cells connected to second bitlines and second wordlines, the second bitlines being arranged as m segments; a page buffer disposed between the first memory sector and the second memory sector for selectively coupling one of the first bitlines and the second bitlines of each of the m segments to a predetermined number of datelines. - View Dependent Claims (2, 16, 17, 18, 19, 20, 21, 22, 23)
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3. A page buffer for a memory bank comprising:
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a first self-decoding page buffer stage for sensing data from a first bitline, and for providing sensed data corresponding to the first bitline on a corresponding data line in response to an active column select bit latched in a clock signal state, the first self-decoding page buffer stage including an output terminal for providing the active column select bit; and
,a second self-decoding page buffer stage having an input terminal for receiving the active column select bit from the output terminal of the first self-decoding page buffer stage, for sensing data from a second bitline, and providing sensed data corresponding to the second bitline on the corresponding data line in response to the active column select bit latched in a subsequent clock signal state. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 24, 25)
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Specification