Data memory
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United States of America Patent
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Jan 14, 2003
Grant Date -
N/A
app pub date -
Nov 22, 1999
filing date -
Nov 26, 1998
priority date (Note) -
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Abstract
A data memory (100) can transfer a redundancy signal from a plurality of redundancy circuits (106-a to 106-f) to a decision and output circuit (124) in a roll call operation. Redundancy circuits (106-a to 106-f) can be successively connected to the decision and output circuit (124) by logic circuits (126-1 to 126-4) arranged in series. A redundancy signal from a redundancy circuit (106-a to 106-f) can be transferred to the decision and output circuit (124) through the logic circuits (126-1 to 126-4). Each logic circuit (126-1 to 126-4) can include an active device that buffers a received redundancy signal to a predetermined potential. Such an arrangement allows a redundancy signal to be input to the decision and output circuit (124) at the predetermined potential, regardless of the distance between a redundancy circuit (106-a to 106-f) and the decision and output circuit (124).
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