Semiconductor device
First Claim
1. A semiconductor device comprising:
- a data amplifier that amplifies a voltage differential of a data I/O line pair and outputs data that has been read to an output buffer;
a data I/O line switch that controls connection and disconnection between the data I/O line pair and the data amplifier;
an I/O line precharge circuit that precharges a first portion of the data I/O line pair, wherein the first portion of the data I/O line pair is separated by the data I/O line switch and located not on the side of the data amplifier;
an amplifier precharge circuit that precharges a second portion of the data I/O line pair, the second portion of the data I/O line pair is separated by the data I/O line switch and located on the side of the data amplifier;
a column decoder that generates a column selecting signal that selects a bit line pair from among a plurality of bit line pairs to which memory cells are connected according to a column address that is input; and
a bit line selecting switch that connects, according to the column selecting signal, the bit line pair of a plurality of the bit line pairs and a data I/O line pair that outputs data from a memory cell to the outside.
6 Assignments
0 Petitions
Accused Products
Abstract
A semiconductor device includes a column decoder that generates a column selecting signal that selects any of a plurality of bit line pairs to which memory cells are connected according to a column address that is input; a bit line selecting switch that connects by the column selecting signal any of a plurality of bit line pairs and a data I/O line pair that outputs data that has been read from a memory cell to the outside; a data amplifier that amplifies a voltage differential of a data I/O line pair and outputs data that has been read to an output buffer; a data I/O line switch that is provided in the data I/O lines; an I/O line precharge circuit that precharges a data I/O line pair that is not on the side of the data amplifier; and an amplifier precharge circuit that precharges a data I/O line pair that is on the side of the data amplifier.
-
Citations
17 Claims
-
1. A semiconductor device comprising:
-
a data amplifier that amplifies a voltage differential of a data I/O line pair and outputs data that has been read to an output buffer; a data I/O line switch that controls connection and disconnection between the data I/O line pair and the data amplifier; an I/O line precharge circuit that precharges a first portion of the data I/O line pair, wherein the first portion of the data I/O line pair is separated by the data I/O line switch and located not on the side of the data amplifier; an amplifier precharge circuit that precharges a second portion of the data I/O line pair, the second portion of the data I/O line pair is separated by the data I/O line switch and located on the side of the data amplifier; a column decoder that generates a column selecting signal that selects a bit line pair from among a plurality of bit line pairs to which memory cells are connected according to a column address that is input; and a bit line selecting switch that connects, according to the column selecting signal, the bit line pair of a plurality of the bit line pairs and a data I/O line pair that outputs data from a memory cell to the outside. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A semiconductor device, comprising;
-
a first line; a second line provided separately from the first line; a switch circuit provided between the first line and the second line, the first and second lines being electrically disconnected from each other when the switch circuit is turned OFF and electrically connected to each other when the switch circuit is turned ON; a first precharge circuit coupled to the first line to precharge, when activated, the first line; a second precharge circuit coupled to the second line to precharge, when activated, the second line; and an amplifier circuit coupled to the second line, wherein the first precharge circuit being activated and the second precharge circuit being deactivated when the switch circuit is turned OFF and the amplifier circuit is activated, and the first precharge circuit being deactivated and the second precharge circuit being activated when the switch circuit is turned OFF and the amplifier circuit is deactivated. - View Dependent Claims (9, 10, 11)
-
-
12. A semiconductor device, comprising:
-
first and second bit lines; a sense amplifier circuit coupled to the bit lines to amplify a voltage difference between the first and second bit lines; first and second I/O lines; a bit line selecting switch provided between the first and second bit lines and the first and second I/O lines, and controlling connection and disconnection between the first and second I/O lines and the first and second bit lines; an I/O precharge circuit coupled to the first and second I/O lines to precharge each of the first and second I/O lines; a data amplifier circuit including first and second nodes to amplify a voltage difference between the first and second nodes; a data I/O line switch provided between the first and second I/O lines and the first and second nodes of the data amplifier circuit, and controlling connection and disconnection between the first and second nodes and the first and second I/O lines; and an amplifier precharge circuit coupled to the first and second nodes of the data amplifier circuit to precharge each of the first and second nodes. - View Dependent Claims (13, 14, 15, 16, 17)
-
Specification