Semiconductor memory device
First Claim
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1. A semiconductor memory device comprising:
- a first input/output (I/O) line pair;
a second I/O line pair pre-charged to a one-half power voltage level and configured to receive data from the first I/O line pair; and
a pull-up circuit configured to pull-up a voltage apparent on one of the second I/O line pair to a full power voltage level in response to a control signal.
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Abstract
A semiconductor memory device including a CMOS-type local sensing amplifier circuit is provided. The semiconductor memory device includes a first input/output (I/O) line pair, a second I/O line pair pre-charged to a one-half power voltage level and receives data from the first I/O line pair, and a pull-up circuit pulling up a voltage of one of the second I/O pair to a full power voltage level.
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Citations
20 Claims
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1. A semiconductor memory device comprising:
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a first input/output (I/O) line pair; a second I/O line pair pre-charged to a one-half power voltage level and configured to receive data from the first I/O line pair; and a pull-up circuit configured to pull-up a voltage apparent on one of the second I/O line pair to a full power voltage level in response to a control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A semiconductor memory device comprising:
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a local line and a complementary local line; a global line connected to the local line and a complementary global line connected to the complementary local line; a first pre-charge circuit configured to pre-charge the local line and the complementary local line to a one-half power voltage level during a pre-charge operation; a second pre-charge circuit configured to pre-charge the global line and the complementary global line to the one-half power voltage level during the pre-charge operation; and a pull-up circuit configured to pull-up a voltage apparent on one of the local line and the complementary local line to a full power voltage level in response to a control signal. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating a semiconductor memory device, comprising:
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respectively connecting bit lines of a bit line pair with local lines of a local line pair; precharging the local line pair to a one-half power voltage level; after pre-charge of the local line pair, communicating data from the bit line pair to the local line pair; using a local sensing amplifier, sensing/amplifying the data on the local line pair; precharging a global line pair connected to the local line pair to the one-half power voltage level; respectively connecting global lines of the global line pair with local lines of the local line pair and communicating the data to the global line pair; and
thereafter,pulling-down a voltage apparent on one global line of the global line pair while pulling-up a voltage apparent on the other global line of the global line pair, and using a global sensing amplifier, sense/amplifying the data on the global line pair. - View Dependent Claims (18, 19, 20)
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Specification