Non-volatile memory read/write security protection feature selection through non-volatile memory bits

摘要

A memory system in accordance with the invention includes a programmable non-volatile memory that contains a security indication and program instructions. A volatile register is also provided. Memory interface logic circuitry operates responsive to the contents of the volatile register, to selectively allow access to the memory. Security indication copying circuitry receives a reset signal for the memory system. In response to the reset signal, the copying circuitry causes the security indication to be copied into the volatile register as the contents thereof.