Patent ID: 7492663

Claim:
A storage device comprising: a reset signal terminal configured to be electrically connected to external equipment at a contact point, for receiving a reset signal; a clock signal terminal configured to be electrically connected to the external equipment at a contact point, for receiving a clock signal; a data signal terminal configured to be electrically connected to the external equipment at a contact point, for sending and receiving a data signal; a non-volatile memory; a pull down resistance configured to be connected to a lower side of electric potentials used by the storage device, at one terminal of the pull down resistance; and a controller configured to be initialized in response to the reset signal, and also to write to and to read from the non-volatile memory according to the clock signals and the data signals, wherein the data signal includes a signal configured to raise a voltage of the data signal terminal to a higher side of the electric potentials, for instructing to write to the non-volatile memory, wherein the data signal terminal is connected to the other terminal of the pull down resistance; said storage device further comprising a first resistance configured to generate a potential difference according to a electrical current, wherein the reset signal terminal is connected to one of the higher side and the lower side of the electric potentials via the first resistance.