A chip protection register lock circuit uses a plurality of lock bits in a lock bit register. If the register contains N bits, N/2 bits of the register are coupled to an erase circuit and the remaining N/2 bits are coupled to a programming circuit. After the chip protection register is programmed, the...http://www.google.fr/patents/US7143255?utm_source=gb-gplus-shareBrevet US7143255 - Chip protection register lock circuit in a flash memory device
Chip protection register lock circuit in a flash memory device
