Use this tag for questions concerning low power sleep states, eg. a battery powered circuit waiting for an external event to happen.
Sleep mode usually describes circuit states where almost no power is consumed, waiting for some event to occur, like a realtime clock alarm, some sensor reading, incoming communication or a button press.
This mostly applies to microcontroller operated circuits, where the microcontroller may be put in a low power state, just waiting for external interrupts to occur.
