INNER POTENTIAL GENERATING CIRCUIT

摘要

PURPOSE:To quickly boost inner power source voltage to a stable potential. CONSTITUTION:The inner potential generating circuit is provided with a depletion type MOS transister 1 and an inner potential generating circuit part 2. The depletion type MOS transister 1 received a power source voltage Vcc and outputs a boosting voltage Va based on the power source voltage Vcc until the power source voltage Vcc increases to a preset potential. The inner potential generating circuit part 2 inputs the voltage Va outputted from the depletion type MOS transister 1, generates a potential higher than the power source voltage Vcc from the potential of the voltage Va and outputs it as the inner potential Vout.