HIGH VOLTAGE GENERATOR FOR SEMICONDUCTOR DEVICE

摘要

a ring oscillator(4) which outputs two oscillating frequencies with different phase according to the output signal of a high voltage level detector(1); a first and a second frequency dividers(5,8) for diving the output signal of the ring oscillator to the each constant period; the first and second drivers(6,9) where plural driving signals occur according to the each output signal of the first and the frequency divider; first and second high voltage pumps(7,10) which generate high voltage by driving according to the output signal of the first and the second driver(6,9).