CPC G06F 21/75 (2013.01) [G06F 21/72 (2013.01); G11C 11/4096 (2013.01); H01L 27/0883 (2013.01); H03K 19/17768 (2013.01)] | 21 Claims |
1. A system comprising:
a physical unclonable function device, the device comprising:
a first assembly of non-volatile memory cells each having a selection transistor embedded in a semiconductor substrate and a depletion-type state transistor having a control gate and a floating gate that are electrically connected, the depletion-type state transistors having respective effective threshold voltages belonging to a common random distribution; and
a processing circuit configured to deliver, to an output interface of the device, a group of output data based on differential readings of pairs of effective threshold voltages of the depletion-type state transistors of pairs of the memory cells of the first assembly.
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