1. Introduction to One-Time Programmable (OTP) Technology One-time programmable (OTP) memory is a type of non-volatile memory that can be programmed exactly once after manufacturing or outside the manufacturing factory, and cannot be erased or reprogrammed thereafter. OTP memory can be programmed once by the user using a programmable read-only memory (PROM) programmer. Un... https://www.hycxpcba.com/blogs/What-is-one-time-programmable-mean.html