| 摘要 |
PURPOSE: An internal voltage generating method is provided to improve the operational stability of an internal circuit like a transistor by reducing the change of an instantaneous negative voltage. CONSTITUTION: A plurality of internal voltages are generated in response to a power-up signal(PWRUP). The power-up signal has a logic level corresponding to the voltage level of a power supply voltage which is applied from the outside. A negative voltage(VBB) is generated from the activated time point of the power-up signal by receiving a ground voltage which is applied from the outside. A boosting voltage, which has a voltage level higher than a power voltage, is generated after estimated time than the activation time point of the power-up signal. |
