Tracking circuit for a memory device
First Claim
1. A memory device, comprising:
- a memory array;
an I/O circuit for accessing the memory array;
a tracking circuit includinga dummy bit line,a first tracking cell including a first NMOS transistor, the first tracking cell being coupled to receive a control signal and also coupled to the dummy bit line through the first NMOS transistor, anda second tracking cell including a second NMOS transistor, the second tracking cell being coupled to receive the control signal and also coupled to the dummy bit line through the second NMOS transistor, a gate of the second NMOS transistor being coupled to the dummy bit line; and
a control circuit coupled to the dummy bit line for generating a clock signal for the I/O circuit.
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Accused Products
Abstract
A memory device includes a memory array, an I/O circuit for accessing the memory array, and a tracking circuit. The tracking circuit includes a dummy bit line, a first tracking cell including a first NMOS transistor, the first tracking cell being coupled to receive a control signal and also coupled to the dummy bit line through the first NMOS transistor, and a second tracking cell including a second NMOS transistor, the second tracking cell being coupled to receive the control signal and also coupled to the dummy bit line through the second NMOS transistor, a gate of the second NMOS transistor being coupled to the dummy bit line. The memory device also includes a control circuit coupled to the dummy bit line for generating a clock signal for the I/O circuit.
34 Citations
24 Claims
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1. A memory device, comprising:
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a memory array; an I/O circuit for accessing the memory array; a tracking circuit including a dummy bit line, a first tracking cell including a first NMOS transistor, the first tracking cell being coupled to receive a control signal and also coupled to the dummy bit line through the first NMOS transistor, and a second tracking cell including a second NMOS transistor, the second tracking cell being coupled to receive the control signal and also coupled to the dummy bit line through the second NMOS transistor, a gate of the second NMOS transistor being coupled to the dummy bit line; and a control circuit coupled to the dummy bit line for generating a clock signal for the I/O circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A memory device, comprising:
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a plurality of memory arrays; a plurality of I/O circuits; a plurality of control circuits; and a plurality of tracking circuits each including a dummy bit line, a first tracking cell including a first NMOS transistor, the first tracking cell being coupled to receive a control signal and also coupled to the dummy bit line through the first NMOS transistor, and a second tracking cell including a second NMOS transistor, the second tracking cell being coupled to receive the control signal and also coupled to the dummy bit line through the second NMOS transistor, a gate of the second NMOS transistor being coupled to the dummy bit line, wherein each memory array corresponds to one of the plurality of I/O circuits, one of the plurality of tracking circuits, and one of the plurality of control circuits, and wherein, for each memory array, the corresponding control circuit is coupled to the dummy bit line of the corresponding tracking circuit for generating a clock signal for the corresponding I/O circuit. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A tracking circuit in a memory device, wherein the memory device includes a memory array, an I/O circuit for accessing the memory array, and a control circuit, wherein the tracking circuit is coupled to receive and delay a control signal for the control circuit to generate a clock signal for the I/O circuit, the tracking circuit comprising:
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a dummy bit line; one or more first tracking cells each including a first NMOS transistor, each of the first tracking cells being coupled to receive a control signal and also coupled to the dummy bit line through the first NMOS transistor; and one or more second tracking cells each including a second NMOS transistor, each of the second tracking cells being coupled to receive the control signal and also coupled to the dummy bit line through the second NMOS transistor, a gate of the second NMOS transistor being coupled to the dummy bit line. - View Dependent Claims (24)
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Specification