Otp memory with high data security

An electronic system, comprising:

• a processor;
• and
• an One-Time Programmable (OTP) memory operatively connected to the processor, the OTP memory including a plurality of OTP cells, at least one of the OTP cells comprising:
• an OTP element including at least one electrical fuse as an OTP element having a first terminal coupled to a first supply voltage line, the at least one OTP element having a resistance;
• and
• a selector coupled to the OTP element with at least one enable signal coupled to a second and/or a third supply voltage line;
• and
• program logic configured to provide programming the at least one of the OTP cells into a different logic state by applying at least one voltage or current pulses to the at least one of the OTP cell via the first, the second, and/or the third supply voltage lines to turn on the selector and to thereby progressively change the resistance of the at least one of the OTP cells;
• and
• data security logic to obfuscate fuse resistance to impede unauthorized access to data stored in the OTP memory.

A method of programming OTP memory with high data security, comprising:

• providing a plurality of OTP cells, at least one of the OTP cells including at least:
• an OTP element including at least one electrical fuse as OTP element having a first terminal coupled to a first supply voltage line;
• and
• a selector coupled to the OTP element with at least one enable signal coupled to a second and/or a third supply voltage line, and
• programming the at least one OTP cell into a different logic state by applying at least one voltage or current pulses to the at least one OTP cell via the first, the second, and/or the third supply voltage lines to turn on the selector and to thereby change the OTP cell resistance progressively;

A One-Time Programmable (OTP) memory, comprising:

• an OTP memory block including at least a plurality of OTP cells, at least one of the OTP cells including at least:
• an electrical fuse having a first terminal coupled to a first supply voltage line;
• and
• a selector coupled to the electrical fuse and having at least one enable signal coupled to a second and/or a third supply voltage line;
• and
• at least one regulator to regulate an input current provided to the OTP memory block,
• wherein the least one of the OTP cells is configured to be programmable by applying voltages to the first, second, and/or the third supply voltage lines to turn on the selector and to thereby change the electrical fuse resistance.