DESCRIPTION
The DS1204V Electronic Key is a miniature security system that stores 64 bits of user-definable identification code and a 64-bit security match code that protects 128 bits of read/write nonvolatile memory. The 64-bit
identification code and the security match code are programmed into the key via a special program mode operation. After programming, the key follows a procedure with a serial format to retrieve or update data.

FEATURES
•Cannot be deciphered by reverse engineering
•Partitioned memory thwarts pirating
•User-insertable packaging allows personal possession
•Exclusive blank keys on request
•Appropriate identification can be made with a 64-bit reprogrammable memory
•Unreadable 64-bit security match code virtually prevents deciphering by exhaustive search with over 10¹⁹
possibilities
•128 bits of secure read/write memory create addition al barriers by permitting data changes as often as
needed
•Rapid erasure of identification security match code and secure read/write memory can occur if tampering is detected
•Low-power CMOS circuitry
•Four million bps data rate
•Durable and rugged
•Applications include software authorization, gray market software protection, proprietary data, financial
transactions, secure personnel areas, and system access control