DESCRIPTION

The ST1305B 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 Supply Voltage (5 V)

■ Memory Divided Into:

– 16 bits of Circuit Identification

– 48 bits of Card Identification

– 48 bits of Count Data

– 16 bits of Certificate

– 24 bits of Transport Code

– 64 bits of Issuer Data

■ Counting Capability up to 262,144

■ 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

■ 1 Million Erase/Write Cycles (minimum)

■ 10 Year Data Retention (minimum)

■ 5 ms Programming Time (typical)