| 摘要 |
PURPOSE: A sensing margin control apparatus is provided to increase a sensing margin of data by increasing a potential of a storage node of a cell plate. CONSTITUTION: A delay part(10) delays a word line enable signal according to the input of an active signal. A comparison circuit part(20) selects the first plate voltage according to an output signal of the delay part, and outputs a plate voltage selection signal controlling to select the second plate voltage higher than the first plate voltage according to the input of a precharge signal. A plate voltage control part(30) selects a corresponding plate voltage of the first plate voltage and the second plate voltage according to a plate voltage selection signal applied from the comparison circuit part. And a memory cell(40) controls a storage node potential of a cell capacitor using the corresponding plate voltage applied from the plate voltage control part.
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