DESCRIPTION
The ST1305 is a 192-bit EEPROM device with associated security logic to control memory access. The circuit includes counting capabilities and thus is very well adapted to prepaid card applications.

■ Single 5 V Supply Voltage
■ Programming Time: 5 ms
■ Memory Divided Into:
    – 16 bits of Circuit Identification
    – 48 bits of Card Identification
    – 48 bits of Count Data
    – 16 bits of Certificate
    – 48 bits of Transport Code
    – 64 bits of Issuer Data
■ Counting Capability up to 262,144 Units
■ Circuit Protected by Transport Code for Delivery from ST to the Customer
■ 5 External Contacts Only (ISO 7816 Compatible)
■ Answer to Reset (Fully Compatible with ISO 7816-3)
■ E.S.D. Protection Greater Than 4000 V
■ Power-On and Low VCC Reset
■ 10 Years Data Retention
■ 1 Million Erase/Write Cycles Endurance