Stay Awake | Cypress Semiconductor
To protect against unintended shorts, the SC/CT and SAR blocks disconnect their terminals when the block goes to sleep. This will also disconnect any routes (static or dynamic) which use the block terminal as a via, or use the block terminal for track jumping.
We allow the user to identify those routes which must stay awake during device sleep using the Stay Awake component, which has a single connection and no parameters. The net to which the stay_awake component is attached will be routed without using the SC/CT or SAR block terminals.