公开(公告)号：US20240355381A1

公开(公告)日：2024-10-24

申请号：US18306167

申请日：2023-04-24

Applicant: QUALCOMM Incorporated

Inventor： Seohee KIM ,  Chulmin JUNG ,  Xiao CHEN ,  Hanil LEE ,  Venugopal BOYNAPALLI ,  Jung Pill KIM

IPC: G11C11/413 ,  H03K5/24 ,  H10B10/00

CPC classification number: G11C11/413 ,  H03K5/24 ,  H10B10/18

Abstract: An integrated circuit is disclosed that includes a power supply multiplexer for selecting between a first power supply voltage and a second power supply voltage to provide a selected power supply voltage to a memory. A controller includes a comparator stage having a comparator with switchable inputs so that the comparator stage may control a binary state of a first output signal responsive to whether the first power supply voltage is greater than the second power supply voltage plus a voltage offset of the comparator. Similarly, the comparator stage may control a binary state of a second output signal responsive to whether the first power supply voltage is greater than the second power supply voltage minus the voltage offset. The controller controls the selection by the power supply multiplexer responsive to the binary states of the first and second output signals.