公开(公告)号：US5673225A

公开(公告)日：1997-09-30

申请号：US623772

申请日：1996-03-29

Applicant: Woo-Seop Jeong ,  Ho-Cheol Lee

Inventor： Woo-Seop Jeong ,  Ho-Cheol Lee

IPC: G11C11/407 ,  G11C5/14 ,  G11C8/08 ,  G11C7/00 ,  G11C8/00

CPC classification number: G11C8/08

Abstract: A word line voltage boosting circuit varies a word line output voltage according to variation of the number of the word lines to be activated. A boosting circuit boosts a word line voltage which has been precharged to a first level voltage to a second level voltage in response to an activation signal. A voltage adding circuit further boosts the word line voltage to a third voltage level by adding a predetermined voltage to the second level voltage if the number of the word lines to be activated increases. A driving circuit includes a bootstrap circuit for stably providing the boosted word line voltage to an output line.

Abstract translation: 字线电压升压电路根据要激活的字线数量的变化来改变字线输出电压。 升压电路响应于激活信号将已被预充电到第一电平电压的字线电压升高到第二电平电压。 如果要激活的字线数量增加，则通过将预定电压加到第二电平电压，电压相加电路进一步将字线电压升压到第三电压电平。 驱动电路包括用于将升压的字线电压稳定地提供给输出线的自举电路。