| 摘要 |
PROBLEM TO BE SOLVED: To reduce a load with respect to the boost power source of an output buffer. SOLUTION: A method for controlling the charging of a boot capacitor in the output buffer of a memory device includes a step of charging the boot capacitor from a voltage power source to a predetermined voltage, a step of holding the boot capacitor at a predetermined voltage, a step of supplying the charges of the boot capacitor to a pull-up transistor when the pull-up transistor is conductive, a step of disconnecting the boot capacitor and the voltage source from each other when the pull-up transistor is conductive, a step of monitoring the disconnecting step, and a step of unbooting the boot capacitor after the boot capacitor is disconnected from the voltage source. The monitoring step includes a step of sensing the holding transistor used for connecting the boot capacitor to a predetermined voltage. COPYRIGHT: (C)2006,JPO&NCIPI |
