| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an internal power supply voltage generation circuit which supplies a voltage with higher efficiency. <P>SOLUTION: The internal power supply voltage generation circuit 100 includes a first charge pump circuit which steps up an external power supply voltage and outputs a first stepped-up voltage from a first voltage step-up output terminal, a second charge pump circuit which outputs a second stepped-up voltage from a second voltage step-up output terminal, the second stepped-up voltage being higher than the first stepped-up voltage, a first voltage step-down circuit which steps down the first stepped-up voltage and outputs a first stepped-down voltage, and a second voltage step-down circuit which steps down the second stepped-up voltage and outputs a second stepped-down voltage, the second stepped-down voltage being higher than the first stepped-up voltage. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
