Write circuit of a memory device
First Claim
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1. A write circuit for a memory device, the write circuit comprising:
- a first data input register for latching data on a data bus of the memory device;
a second data input register connected to the first data input register;
a selective connector connected to the first data input register and the second data input register; and
a write driver connected to the selective connector, wherein the selective connector is for selectively coupling one of the first and second data input registers to the write driver.
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Abstract
A data input circuit including a first input register, a second input register, and a write driver connected to the second input register. The first and second input registers are preferably series-connected. In the preferred embodiment, a multiplexer selectively connects one of the first and second input registers to the write driver. The input circuit may be embodied in a memory device and in memory systems.
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Citations
23 Claims
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1. A write circuit for a memory device, the write circuit comprising:
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a first data input register for latching data on a data bus of the memory device;
a second data input register connected to the first data input register;
a selective connector connected to the first data input register and the second data input register; and
a write driver connected to the selective connector, wherein the selective connector is for selectively coupling one of the first and second data input registers to the write driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
a data input terminal of the second data input register; and
a data input terminal of the selective connector.
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5. The write circuit of claim 4, wherein the data output terminal of the first data input register is for connection to a read circuit of the memory device.
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6. The write of claim 5, wherein the data output terminal of the first data input register is for connection to a selective connector of the read circuit of the memory device.
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7. The write circuit of claim 1, wherein the second data input register includes a data input terminal connected to a data output terminal of the first data input register.
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8. The write circuit of claim 7, wherein the second data input register includes an enable terminal for connection to an input enable register of the memory device.
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9. The write circuit of claim 8, wherein the second data input register includes a data output terminal connected to a data input terminal of the selective connector.
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10. The write circuit of claim 1, wherein the selective connector includes:
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a first data input terminal connected to a data output terminal of the first data input register;
a second data input terminal connected to a data output terminal of the second input register; and
a data output terminal connected to a data input terminal of the write driver.
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11. The write circuit of claim 10, wherein the data output terminal of the selective connector is for connection to a read circuit of the memory device.
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12. The write circuit of claim 11, wherein the data output terminal of the selective connector is for connection to a selective connector of the read circuit of the memory device.
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13. The write circuit of claim 12, wherein the selective connector includes a control terminal for connection to an output terminal of a second selective connector.
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14. The write circuit of claim 1, wherein the selective connector includes a multiplexer.
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15. The write of claim 14, wherein the selective connector includes a plurality of selective connectors.
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16. The write circuit of claim 1, wherein the write driver includes a data input terminal connected to an output terminal of the selective connector.
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17. The write circuit of claim 16, wherein the write driver includes an enable terminal for connection to a logic gate of the memory device.
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18. The write circuit of claim 17, wherein the logic gate is an AND gate.
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19. The write circuit of claim 18, wherein the write driver includes data output terminal for connection to a memory array of the memory device.
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20. The write circuit of claim 1, wherein the write driver includes a plurality of write drivers.
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21. A memory device, comprising:
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a memory array;
an address circuit coupled to the memory array;
a read circuit coupled to the memory array;
a data bus coupled to the read circuit;
a write circuit coupled to the memory array, wherein the write circuit includes;
a first data input register for latching data on the data bus;
a second data input register connected to the first data input register;
a selective connector connected to the first data input register and the second data input register; and
a write driver connected to the selective connector, wherein the selective connector is for selectively connecting one of the first and second data input registers to the write driver; and
a control circuit coupled to the address circuit, the read circuit, and the write circuit.
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22. A memory system, comprising:
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control logic; and
a memory device in communication with the control logic, wherein the memory device includes;
a memory array;
an address circuit coupled to the memory array;
a read circuit coupled to the memory array;
a data bus coupled to the read circuit;
a write circuit coupled to the memory array, wherein the write circuit includes;
a first data input register for latching data on the data bus;
a second data input register connected to the first data input register;
a selective connector connected to the first data input register and the second data input register; and
a write driver connected to the selective connector, wherein the selective connector is for selectively connecting one of the first and second data input registers to the write driver; and
a control circuit coupled to the address circuit, the read circuit, and the write circuit. - View Dependent Claims (23)
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Specification