SECURITY DEVICE INCLUDING PHYSICAL UNCLONABLE FUNCTION CELLS, OPERATION METHOD OF SECURITY DEVICE, AND OPERATION METHOD OF PHYSICAL UNCLONABLE FUNCTION CELL DEVICE

摘要

The security device according to an embodiment of the present invention selects a PUF cell array including a plurality of first PUF cells connected to a first word line, a target PUF cell among a plurality of first PUF cells, and based on the selected target PUF cell. A controller configured to output a control signal, a decoder configured to apply a first voltage to a first word line in response to the control signal, a target PUF cell connected to the plurality of first bit lines and among the plurality of first bit lines A bit line selection circuit configured to output a first target current provided through a bit line connected to and a first sum current of currents provided through the remaining bit lines connected to other PUF cells among the plurality of first bit lines, and A bit discriminator configured to output a target bit for the target PUF cell based on the first target current and the first sum current, and the target PUF cell and the other PUF cell are included in the plurality of first PUF cells.