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

Claim 12:
13. 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 third power rail for a third power domain;
a ground terminal;
a first footer control signal in the first power domain;
a second footer control signal in the second power domain;
a first virtual VSS terminal;
a first footer circuit connected between the first virtual VSS terminal and the ground terminal, the first footer circuit configured to selectively control a connection between the first virtual VSS terminal and the ground terminal in response to the first footer control signal;
a first circuit block connected between the first power rail and the first virtual VSS terminal;
a second circuit block connected between the first power rail and the first virtual VSS terminal;
a second virtual VSS terminal;
a second footer circuit connected between the second virtual VSS terminal and the ground terminal, the second footer circuit configured to selectively control a connection between the second virtual VSS terminal and the ground terminal in response to the second footer control signal;
a third circuit block connected between the second power rail and the second virtual VSS terminal.