| 摘要 |
PURPOSE: To provide a memory cube whose cost is reduced, that is miniaturized, and whose manufacturing process is simplified. CONSTITUTION: A memory cube with a plurality of memory chips 152 that have a plurality of data storage devices has an auxiliary circuit 161 with a non-active line termination circuit, and one or a plurality of auxiliary circuits are formed as one portion of the memory cube and are arranged with a gap between the memory chips. An external terminal that is connected to a memory input line, a control line, and a data writing line is provided at the auxiliary circuit chip while it is close to the termination point of each line. A decoupling capacitor 215 that is integrated at the auxiliary circuit chip is connected to a power supply buss in a memory cube structure and a heating resistor 218 is provided at the auxiliary circuit chip to maintain the temperature of the memory cube nearly constantly. A temperature detection diode 220 is incorporated into the auxiliary circuit chip, thus accurately detecting the internal temperature of the memory cube. |
