| 摘要 |
PURPOSE: An internal voltage generator is provided to secure the stable operation of an internal circuit in a semiconductor memory device which uses an internal voltage by generating a constant internal voltage regardless of an external power voltage. CONSTITUTION: Based on a first target voltage level which corresponds to an external power voltage, a first voltage sensor(412) detects a final internal voltage and outputs the first detection signal. Based on a second target voltage level which corresponds to an internal power voltage, a second voltage sensor(432) detects a final internal voltage and outputs the second detection signal. A final internal voltage generation unit(450) responds to the first and the second detection signal and be activated. The final internal voltage and a reference voltage are input into a first input unit and a second input unit. A first and second power supply units correspond to the first and second input units. An output unit is connected between the second input unit and the second power supply unit and output a corresponding detection signal. |
