公开(公告)号：US20200089299A1

公开(公告)日：2020-03-19

申请号：US16519621

申请日：2019-07-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong-Hwan KIM ,  Wook KIM ,  In-Sub SHIN

IPC: G06F1/28 ,  G06F1/32 ,  H03L7/08 ,  H03L7/099 ,  H03L7/097 ,  H03K3/03 ,  H03K3/037

Abstract: In one embodiment, the voltage droop monitoring circuit includes a ring oscillator circuit block configured to generate a plurality of oscillation signals and configured to output a selected oscillation signal from one of the plurality of oscillation signals based on a first control signal. The first control signal is based on a power supply voltage of a functional circuit block. The voltage droop monitoring circuit further includes a counter configured to generate a count value based on the selected oscillation signal, and a droop detector configured detect droop in the power supply voltage of the functional circuit block based on the count value and at least one threshold value.