| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit which drops the second internal supply voltage generated by the first internal supply voltage by discharging when the external supply voltage falls, and thereby stably operates when the external supply voltage is recovered subsequently. SOLUTION: A p-channel MOS transistor 11 which has the source, drain, and gate potentials connected to the second internal supply voltage VPL, and has a substrate potential connected to the external supply voltage VCC, is connected to the output terminal of a second internal supply power generating circuit 2. Due to this structure, the second internal supply voltage VPL is dropped by discharging when the external supply voltage VCC falls. COPYRIGHT: (C)2004,JPO&NCIPI
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