Hot carrier injection programming and security

An apparatus comprising:

• a physically unclonable function (PUP) circuit including a PUP cell, the PUP cell including:
• a first transistor coupled between a first node and ground;
• a second transistor coupled between a second node and ground, wherein a gate terminal of the first transistor is coupled to the second node and a gate terminal of the second transistor is coupled to the first node;
• a third transistor coupled between a supply rail and the first node;
• a fourth transistor coupled between the supply rail and the second node, wherein gate terminals of the third transistor and the fourth transistor are coupled to the supply rail;
• and
• first, second, and third reset transistors, wherein the first and second reset transistors are coupled together at a common reset node, the first and second reset transistors together are coupled between the first and second nodes, and the third reset transistor is coupled between the common reset node and the ground, wherein the PUP cell further includes a zeroizer.