POWER CONTROL CIRCUIT WITH LOW POWER CONSUMPTION

摘要

The available battery power on autonomously powered mobile electronic devices, in particular smartcards, is very small but requires a very long shelf life. Thus, even very small rest currents are a big power issue. The invention discloses a power save circuit and method, where a single power switch, e.g. a FET or a MEM switch, can be used to detach the power supply (?)from the whole system and allow the lowest current possible. Further, a combination with a double action button and integration of the power switch provides a solution with a minimum number of components and interconnects. An option for "system wake-up at any button" enables additional power saving during use, without inconvenience to the user.