| 摘要 |
PURPOSE: To reduce a stand-by current and also to shorten an initial reference voltage forming time by supplying an output voltage from a low voltage generation circuit to a stand-by current control means and an initial voltage forming means through a low voltage supply line. CONSTITUTION: An output voltage of a low voltage generation circuit PG is supplied to a stand-by current control means 1 composed of enhancement type P MOS transistors M101 and M102 and an initial voltage forming means 2 composed of N-channel MOS transistor M106 through a low voltage supply line L1, and a reference voltage formed by a resistance means 3 composed of PMOS transistor M103, N-channel MOS transistor M104, and M105 is outputted from reference voltage output line L2. This configuration decreases a stand-by current flowing in the circuit and can quickly form an initial reference voltage. |
