| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor device in which a minimum operating power-supply voltage in an analog circuit can be lowered comparatively easily without lowering a circuit performance. SOLUTION: Whether ions are implanted in order to change a threshold value voltage of a MOS transistor is detected by a threshold value detection circuit 11 of an LVT transistor, and at least a part of an LVT-transistor use circuit 12 is changed over according to a result detected by the detection circuit. Consequently, the minimum operating power-supply voltage VCCmin in the analog circuit can be lowered without lowering the circuit performance. COPYRIGHT: (C)2003,JPO
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