公开(公告)号：US09508420B1

公开(公告)日：2016-11-29

申请号：US15009132

申请日：2016-01-28

Applicant: GLOBALFOUNDRIES INC.

Inventor： Eric D. Hunt-Schroeder ,  John A. Fifield ,  Darren L. Anand ,  Kevin A. Batson

IPC: G11C5/14 ,  G11C11/419

CPC classification number: G11C11/419

Abstract: Approaches for a write assist circuit are provided. The write assist circuit includes a plurality of binary weighted boost capacitors which each contain a first node coupled to a bitline and a second node connected to a corresponding boost enabling transistor, and a plurality of boost enabling transistors which each contain a gate connected to a boost control enable signal for controlling a corresponding binary weighted boost capacitor. The boost control enable signal of each of the plurality of boost enabling transistors is controlled by encoded values based on a power supply level.

Abstract translation: 提供写辅助电路的方法。 写辅助电路包括多个二进制加权升压电容器，每个二进制加权升压电容器包含耦合到位线的第一节点和连接到相应升压使能晶体管的第二节点，以及多个升压使能晶体管，每个包含连接到升压器的栅极 用于控制相应的二进制加权升压电容器的控制使能信号。 多个升压启动晶体管中的每一个的升压控制使能信号由基于电源电平的编码值来控制。