Semiconductor memory device with on die termination circuit
First Claim
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1. A semiconductor memory device having a data input/output pad connected to a data input node, comprising:
- an on die termination resistor one end of which is connected to the data input node; and
a switch one end of which is connected to the other end of the on die termination resistor for connecting/disconnecting the on die termination resistor with an on die termination voltage.
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Abstract
A semiconductor memory device having a data input/output pad connected to a data input node includes: an on die termination resistor one end of which is connected to the data input node; and a switch one end of which is connected to the other end of the on die termination resistor for connecting/disconnecting the on die termination resistor with an on die termination voltage.
52 Citations
14 Claims
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1. A semiconductor memory device having a data input/output pad connected to a data input node, comprising:
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an on die termination resistor one end of which is connected to the data input node; and
a switch one end of which is connected to the other end of the on die termination resistor for connecting/disconnecting the on die termination resistor with an on die termination voltage. - View Dependent Claims (2)
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- 3. The semiconductor memory device as recited in claim, wherein the on die termination resistor is a variable resistor capable of changing a resistance.
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10. A semiconductor memory device for controlling on die termination operation, comprising:
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a first data input/output pad connected to a first data input node;
a second data input/output pad connected to a second data input node;
a first on die termination resistor one end of which is connected to the first data input node;
a second on die termination resistor one end of which is connected to the second data input node;
a first switch one end of which is connected to the other end of the first on die termination resistor for connecting/disconnecting an on die termination voltage with the first on die termination resistor; and
a second switch one end of which is connected to the other end of the second on die termination resistor for connecting/disconnecting the on die termination voltage with the second on die termination resistor. - View Dependent Claims (11, 12, 13, 14)
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Specification