公开(公告)号：US20030142568A1

公开(公告)日：2003-07-31

申请号：US10331147

申请日：2002-12-27

Applicant: STMicroelectronics S.r.I.

Inventor： Salvatore Giove ,  Luca De Ambroggi ,  Salvatore Nicosia ,  Francesco Tomaiulo ,  Kumar Promod ,  Giuseppe Piazza ,  Francesco Pipitone

IPC: G11C007/02 ,  G11C007/00

CPC classification number: G11C7/062 ,  G11C7/067 ,  G11C16/28

Abstract: A circuit for controlling a reference node in a sense amplifier switchable between an operating mode and a stand-by mode is provided. The reference node provides a reference voltage in the operating mode. The circuit may include circuitry for bringing the reference node to a starting voltage upon entry into the stand-by mode, circuitry for keeping the reference node at a pre-charging voltage in the stand-by mode, and circuitry for providing a comparison voltage closer to the pre-charging voltage than the starting voltage. Pulling circuitry may also be included for pulling the reference node toward a power supply voltage. Further, a controller may activate the pulling circuitry upon entering the stand-by mode, and disable the pulling circuitry when the voltage at the reference node reaches the comparison voltage.

Abstract translation: 提供了一种用于控制在操作模式和待机模式之间切换的读出放大器中的参考节点的电路。 参考节点在工作模式下提供参考电压。 电路可以包括用于在进入待机模式时使参考节点进入起始电压的电路，用于将参考节点保持在备用模式下的预充电电压的电路，以及用于提供比较电压更接近的电路 到预充电电压比启动电压。 还可以包括牵引电路以将参考节点拉向电源电压。 此外，控制器可以在进入待机模式时激活拉电路，并且当参考节点处的电压达到比较电压时禁止拉电路。