Circuit and system for using junction diode as program selector for one-time programmable devices

An electronics 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 cells comprising:
• an OTP element coupled to a first supply voltage line;
• a diode including at least a first active region and a second active region isolated from the first active region, where the first active region having a first type of dopant and a second active region having a second type of dopant, the first active region providing a first terminal of the diode, the second active region providing a second terminal of the diode, both the first and second active regions residing in a common CMOS well or on an isolated substrate, the first active region coupled to the OTP element and the second active region coupled to a second supply voltage line,
• wherein the first and second active regions being fabricated from sources or drains of CMOS devices, and
• wherein the OTP element is configured to be programmable by applying voltages to the first and the second supply voltage lines to thereby change its logic state.