| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce power consumption, to improve a transmission rate of an input/output buffer, and to suppress an increase in manufacturing cost. Ž<P>SOLUTION: Thick-film transistors are used for a memory cell array 33, a row decoder 30, and a sense amplifier 32 surrounded by bold dashed lines. Transistors which have the same thicknesses as those of the transistors and a lower threshold voltage than those of the transistors are used for input buffers 11-13 and the input/output buffer 26 surrounded by bold lines. Thin-film transistors are used for a clock generation part 16, a command decoder 17, a mode resistor 18, a control part 20, a row address buffer and refresh circuit 21, a column address buffer and the burst counter 22, a data control circuit 23, a latch circuit 24, a DLL 25, and a column decoder 31. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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