SEMICONDUCTOR DEVICE
First Claim
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1. A semiconductor device, comprising:
- a code generator configured to generate a supplementary code with a value changing in response to a variation of an impedance code;
a main driver configured to receive an output data and drive the received output data to a data output pad, wherein a driving force of the main driver is controlled according to the impedance code; and
an auxiliary driver configured to receive the output data and drive the received output data to the data output pad, wherein a driving force of the auxiliary driver is controlled according to the supplementary code.
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Abstract
A semiconductor device includes a code generator configured to generate a supplementary code with a value changing in response to a variation of an impedance code, a main driver configured to receive an output data and drive the received output data to a data output pad, wherein a driving force of the main driver is controlled according to the impedance code, and an auxiliary driver configured to receive the output data and drive the received output data to the data output pad, wherein a driving force of the auxiliary driver is controlled according to the supplementary code.
26 Citations
19 Claims
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1. A semiconductor device, comprising:
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a code generator configured to generate a supplementary code with a value changing in response to a variation of an impedance code; a main driver configured to receive an output data and drive the received output data to a data output pad, wherein a driving force of the main driver is controlled according to the impedance code; and an auxiliary driver configured to receive the output data and drive the received output data to the data output pad, wherein a driving force of the auxiliary driver is controlled according to the supplementary code. - View Dependent Claims (2, 3, 4, 5)
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6. A semiconductor device, comprising:
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a code generator configured to generate a pull-up supplementary code and a pull-down supplementary code, wherein the pull-up supplementary code and the pull-down supplementary code change in response to a variation of a pull-up impedance code and a variation of a pull-down impedance code, respectively; a pull-up driver configured to receive an output data and pull-up drive a data output pad by using a plurality of main pull-up drivers and a plurality of auxiliary pull-up drivers; and a pull-down driver configured to receive the output data and pull-down drive the data output pad by using a plurality of main pull-down drivers and a plurality of auxiliary pull-down drivers, wherein the main pull-up drivers are controlled to be turned on/off in response to the pull-up impedance code and the auxiliary pull-up drivers are controlled to be turned on/off in response to the pull-up supplementary code, and the main pull-down drivers are controlled to be turned on/off in response to the pull-down impedance code, and the auxiliary pull-down drivers are controlled to be turned on/off in response to the pull-down supplementary code. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification