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US 2017/0374308 A1Published application
Group selection circuit, and column readout device and method thereof
AssigneeSK hynix Inc.
InventorsWon-Seok HWANG, Si-Wook YOO
Life of this patent
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Abstract
A group selection circuit includes an input block suitable for receiving a last column select signal of a previous column switch group and a last column select signal of a current column switch group; and a group selection block suitable for generating a group select signal that is activated from a first edge of the last column select signal of the previous column switch group to a first edge of the last column select signal of the current column switch group, in response to an output signal of the input block.
Claims20
A group selection circuit comprising:
- an input block suitable for receiving a last column select signal of a previous column switch group and a last column select signal of a current column switch group;
- and
- a group selection block suitable for generating a group select signal that is activated from a first edge of the last column select signal of the previous column switch group to a first edge of the last column select signal of the current column switch group, in response to an output signal of the input block.
A column readout device comprising:
- a plurality of group selection circuits suitable for generating a group select signal in response to a last column select signal of a previous column switch group and a last column select signal of a current column switch group;
- a plurality of group selection switches suitable for selecting one of a plurality of column switch groups in response to the group select signal;
- and
- the plurality of column switch groups, each having a plurality of column switches suitable for selecting one of input data for respective column lines in response to a column select signal, in a state of being selected by a corresponding group selection switch among the plurality of group selection switches, to transfer the selected input data to a column readout sensing node through a corresponding column switch group node.
1 more element
A column readout method comprising:
- activating a current group selection switch in response to a first edge of a last column select signal of a previous column switch group;
- and
- deactivating the current group selection switch in response to at a first edge of a last column select signal of a current column switch group.
Dependencies are inferred from the claim text.