Semiconductor memory devices having signal delay controller and methods performed therein
AssigneeSamsung Electronics Co., Ltd.
InventorsJeong-Sik Nam, Ho-Sung Song
Life of this patent
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Abstract
A semiconductor memory device may have a memory cell array with respective memory cells disposed at intersections of rows and columns. The semiconductor memory device may also include at least one decoder and at least one delay controller. The decoder may select a row or column of the memory cell. The signal delay controller may control a delay of an activation signal applied to the row or column by the at least one decoder based on at least one of a position of the at least one memory cell associated with the selected row or column and a line loading capacitance value of the selected memory cell.
Claims16
A method for equalizing access times for accessing memory cells within a memory cell regardless of a position of the memory cells, the method comprising:
- providing a decoding signal to the memory cell array through a first path without delay when the decoding signal is a signal for accessing a memory cell within a first cell array block of the memory cell array, where a path length from between the first cell array block and a decoder is longer than a path length between a second cell array block of the memory cell array and the decoder;
- and
- providing the decoding signal to the memory cell array through a second path with delay when the decoding signal is a signal for accessing a memory cell within the second cell array block;
- selecting at least one of at least one row and at least one column associated with the at least one memory cell of at least one of the first and second cell array blocks, wherein
- the providing the decoding signals to the memory cell array through the first and second paths includes:
- controlling a delay of an activation signal applied to the at least one of row and column by the decoder in response to a block control signal based on at least one of a position of the at least one memory cell associated with the selected at least of one of row and column and a line loading capacitance value of the selected memory cell, and
- wherein the controlling equalizes access times for accessing memory cells regardless of a position of the memory cells within the memory cell array.
A method for equalizing access times of a memory device including at least one memory cell array, the memory cell array having memory cells disposed at intersections of rows and columns, the method comprising:
- selecting at least one of at least one row and at least one column associated with the at least one memory cell of the memory cell array,
- controlling a delay of an activation signal applied to the at least one of row and column by the decoder in response to a block control signal based on at least one of a position of the at least one memory cell associated with the selected at least of one of row and column and a line loading capacitance value of the selected memory cell, wherein
- the controlling equalizes access times for accessing the memory cells regardless of a position of the memory cells within the memory cell array.
Dependencies are inferred from the claim text.