| 摘要 |
<p>The present invention describes a multi-step pulse generating circuit for a flash memory comprising a reference voltage generating circuit to generate uniform voltage: a first comparator to compare the output voltage of the first comparator with the feedback value; a voltage drop means to get desirable voltage by dropping the output voltage of the first comparator; a positive charge pump circuit to generate desirable high voltage; a diode chain to drop the output voltage of the positive charge pump circuit; a second comparator to compare the output voltage of the voltage drop means with the output voltage of the diode chain; and a switching means to control the output voltage of the positive charge pump circuit depending on the output of the second comparator.</p> |
