| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain stable boosting capability in a wide operation voltage region and to reduce current consumption when operation voltage is high, in a boosting circuit of an EEPROM. SOLUTION: This circuit is provided with a transmission gate 101 in which plural capacitors C1, C2 are connected in parallel in each stage, while at least one of the capacitors C1, C2 is selected as an object of coupling operation. Capacity of a whole circuit is switched in accordance with operation voltage VDD by controlling conduction of the transmission gate 101 by a signal F and selecting at least one of two capacitors C1, C2.</p> |
