Semiconductor device with self-lock security and associated methods and systems

A memory device, comprising:

• a circuit configured to access a fuse array of the memory device;
• an access control module coupled to the circuit and configured to:
• monitor for a predefined event;
• count a quantity of clock cycles in response to an instance of the predefined event;
• pause counting the quantity of clock cycles when the circuit is activated to access the fuse array of the memory device;
• determine the predefined event satisfies a threshold;
• and
• temporarily disable the circuit when the predefined event associated with the memory device satisfies the threshold.

A method of operating a memory device, comprising:

• monitoring a predefined event associated with the memory device;
• counting a quantity of clock cycles in response to an occurrence of the predefined event;
• determining a voltage supplied to the circuit is greater than an operating voltage of the memory device;
• pausing counting the quantity of clock cycles based on the determination,
• determining that a fixed duration has lapsed after the occurrence of the predefined event based on counting the quantity of clock cycles;
• and
• temporarily disabling a circuit of the memory device configured to access a fuse array of the memory device based on the determination.