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US 12,548,615 B2Granted
Apparatuses and methods for repairing multiple bit lines with a same column select value
AssigneeMicron Technology, Inc.
InventorsJohn F. Schreck, Jason M. Johnson
Life of this patent
Estimating the term…
Abstract
Embodiments of the disclosure are drawn to apparatuses and methods for repairing multiple bit lines with a same column select value. A memory mat may be bordered by a first gap and a second gap. Each gap includes sets of sense amplifiers and a redundant sense amplifier set. The sense amplifier sets are activated by an enable signal and share a column select (CS) signal in common. The redundant sense amplifier set is activated by a redundant enable signal separate from the enable signal. In some embodiments, the redundant sense amplifier sets are coupled to a redundant CS signal which is separate from the CS signal.
Claims22
An apparatus comprising:
- a first set of sense amplifiers comprising a first plurality of sense amplifiers, a selected one of which is coupled to a first global input/output (GIO) line, wherein the selected one of the first plurality of sense amplifiers is selected by a value of a first column select signal;
- a second set of sense amplifiers comprising a second plurality of sense amplifiers, a selected one of which is coupled to a second GIO line, wherein the selected one of the second plurality of sense amplifiers is selected by the value of the first column select signal;
- and
- a redundant set of sense amplifiers comprising a third plurality of sense amplifiers, a selected one of which is coupled to a redundant GIO line, wherein the selected one is selected based on a value of a redundant column select signal, wherein the redundant column select signal is different than the first column select signal.
1 more element
An apparatus comprising:
- a first set of sense amplifiers comprising a first plurality of sense amplifiers, a selected one of which is coupled to a first global input/output (GIO) line, wherein the first set of sense amplifiers are activated by a first enable signal;
- a second set of sense amplifiers comprising a second plurality of sense amplifiers, a selected one of which is coupled to a second GIO line, wherein the second set of sense amplifiers are activated by the first enable signal;
- and
- a first redundant set of sense amplifiers comprising a third plurality of sense amplifiers, a selected one of which is coupled to a first redundant GIO line, wherein the redundant set of sense amplifiers are activated by a redundant enable signal different than the first enable signal;
- and
- a second redundant set of sense amplifiers comprising a fourth plurality of sense amplifiers, a selected one of which is coupled to a second redundant GIO line different than the first redundant GIO line, wherein the second redundant set of sense amplifiers are activated by a second redundant enable signal different than the first enable signal,
- wherein a first one of the first set, a first one of the second set, and a first one of the first redundant set of sense amplifiers or a second one of the first set, a second one of the second set, and a second one of the first redundant set of sense amplifiers are selected as the selected ones of the first set, the second set, and the first redundant set of sense amplifiers based on a column select signal.
4 more elements
A method comprising:
- receiving a column address associated with a first value of a first column select (CS) signal in a first gap;
- providing a first enable signal associated with the first gap, a first redundant enable signal associated with a first redundant sense amplifier set in the first gap and a second redundant enable signal associated with a second redundant sense amplifier set in a second gap;
- providing the first CS signal with the first value to the first redundant sense amplifier set and a plurality of first sense amplifier sets in the first gap;
- selecting a first sense amplifier of the plurality of first sense amplifier sets and a sense amplifier of the first set of redundant sense amplifiers or a second sense amplifier of the plurality of first sense amplifier sets and a second sense amplifier of the first set of redundant sense amplifiers based on the first CS signal;
- providing a second CS signal to the second redundant sense amplifier set and a plurality of second sense amplifier sets in the second gap;
- accessing the first redundant sense amplifier set along a first redundant global input/output (GIO) line;
- and
- accessing the second redundant sense amplifier set along a second redundant GIO.
5 more elements
Dependencies are inferred from the claim text.