Patent ID: 7312649

Claim:
A voltage booster power supply circuit that generates a boosted voltage for use in a functional block, wherein first and second voltages and a ground voltage are supplied to a voltage booster circuit, said second voltage being lower than the first voltage, a timing signal is generated by a timing generator circuit according to said second voltage, said boosted voltage for use in said functional block is generated by boosting said first voltage according to said timing signal, the voltage booster power supply circuit comprising a detector circuit and said voltage booster circuit, wherein: said voltage booster circuit comprises said timing generator circuit, a level shifter circuit, and a charge pump circuit; said timing generator circuit being supplied with said second voltage and outputting said timing signal of said second voltage to said level shifter circuit; said level shifter circuit outputting a timing signal of said first voltage to said charge pump circuit; said charge pump circuit being supplied with said first voltage and generating said boosted voltage according to the timing signal of the first voltage; and said detector circuit detecting said boosted voltage to activate said timing generator circuit.