A flip-flop circuit is disclosed. The fuse has first and second terminal ends joined by a central portion defining a fusible link. In this manner, the MS may be prevented from waking up unnecessarily, thereby providing high power efficiency. A folders and files layer makes calls directly to a chunk system layer for operations involving non-encrypted volumes. The composition has improved chemical resistance. Followed by the enumerations performed by the addressing type coin-dropping detector circuit, an impulse-length value is derived and transmitted to the external circuit through addressing mechanism, which increases overall integrated level of the circuit with a more efficient design in terms of memory and circuit utilization.