| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a structuring area and realize high integration density by supplying a first voltage, impressing a selection signal consisting of the first voltage to a word line, setting a second voltage which is lower than the first voltage as much as the predetermined voltage and then applying the first signal consisting of the second voltage or a third voltage signal lower than the second voltage to the selected bit line. SOLUTION: When a program voltage VppH is impressed to a drain D, a program voltage VppL is output from the source. The program voltage VppH supplies a voltage required for turning on the select transistors STr1, STr2. An X decoder 11 is a circuit to select the word line WL depending on an address signal and generates a selection signal from the program voltage VppH supplied from a voltage setting circuit 15. A column control circuit 12 generates a first and a second signals to be selectively impressed to the bit line BL from the program voltage VppL or VR supplied from the voltage setting circuit 15.</p> |
