Reusable sold-state one-time programmable read only memory

Abstract

A reusable non-volatile memory (NVM) includes a one-time programmable read only memory (OTPROM), a transparent cover formed above the NVM, and an opaque layer removably disposed on the transparent cover. The opaque layer can reflect light, and can be removed from the transparent cover for allowing light to shine onto the OTPROM so as to erase data stored in the OTPROM. During normal operation of the reusable NVM, the opaque layer is fixed on the transparent cover in order to prevent light from erasing the OTPROM. Conversely, the opaque layer can be removed from the transparent cover before the OTPROM is erased using ultraviolet light. Then, once the erasing procedure is completed, the opaque layer is once again fixed on the transparent cover.

Dependencies are inferred from the claim text.