A monolithically integrable circuit includes a memory having electrically writable and erasable non-volatile storage cells and a memory region having an addressing space subdivided into a plurality of partial quantities of respective addresses receiving reference data, an addressing circuit connected...http://www.google.com/patents/US4712177?utm_source=gb-gplus-sharePatent US4712177 - Circuit for a cord carrier having a memory and an access control unit for secure data access
