| 摘要 |
<p>In an active mode, a transistor 61 or 63 is turned on, so that a reference voltage generator circuit 1 and an internal voltage correcting circuit 2 are activated. Consequently, an internal voltage VINT which is stepped down is applied to an internal main circuit 7. Conversely, in a standby mode, a transistor 61 or 63 is turned off, so that the reference voltage generator circuit 1 and the internal voltage correcting circuit 2 are inactivated. Consequently, the current does not flow in the reference voltage generator circuit 1 and the internal voltage correcting circuit 2, resulting in reduction of a consumption power. Simultaneously, a transistor 62 or 64 is turned on, so that a source voltage Ext.Vcc is directly applied to the internal main circuit 7 through the transistor 62 or 23. Thereby, operation conditions of logic circuits in the internal main circuit 7 are maintained. <IMAGE></p> |
