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US 2008/0259709 A1Published application
Column redundancy circuit
AssigneeHynix Semiconductor Inc.
InventorSung Soo Chi
Life of this patent
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Abstract
A column redundancy circuit is disclosed. The column redundancy circuit includes a first control signal generator configured to receive a refresh flag signal having an enable width larger than that of a refresh signal and a control signal and generate a pull-up control signal, a second control signal generator configured to receive the refresh flag signal and an address signal and generate a pull-down control signal, and a column repair fuse circuit configured to receive the pull-up control signal and the pull-down control signal and generate a redundant cell access signal.
Claims13
A column redundancy circuit comprising:
- a first control signal generator configured to receive a refresh flag signal and a control signal and generate a pull-up control signal;
- a second control signal generator configured to receive the refresh flag signal and an address signal, and generate a pull-down control signal;
- and
- a column repair fuse circuit configured to receive the pull-up control signal and the pull-down control signal, and generate a redundant cell access signal.
1 more element
Dependencies are inferred from the claim text.