| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently and appropriately carry out required power supplying that correspond to an operating mode or the time of supplying the power source. <P>SOLUTION: This dynamic random access memory is equipped with arrays, composed of memory cells; a plurality of peripheral equipments for writing data into the memory cells and reading out the data from these memory cells; a plurality of voltage sources for producing a plurality of supply voltages, in which at least one of these sources is a voltage regulator having a plurality of power amplifiers and these power amplifiers are divided into a plurality of groups operative, by separate or simultaneous operation mode for attaining a settled output power level; and a power distribution bus for transmitting the plurality of supply voltages to the arrays and the plurality of peripheral equipment. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
