Patent ID: 11961554
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A device, comprising:
a first power rail for a first power domain;
a second power rail for a second power domain, wherein the second power rail is different from the first power rail, and wherein the second power domain is different from the first power domain;
a first circuit block connected to the first power rail;
a second circuit block connected to the second power rail;
a virtual VSS terminal, wherein the first and second circuit blocks are both connected to the virtual VSS terminal;
a ground terminal;
a footer control signal, wherein the footer control signal includes a first footer control signal in the first power domain and a second footer control signal in the second power domain; and
a footer circuit connected between the virtual VSS terminal and the ground terminal, the footer circuit configured to selectively control a connection between the virtual VSS terminal and the ground terminal;
wherein the footer circuit includes a first footer circuit configured to receive the first footer control signal and a second footer circuit configured to receive the second footer control signal.