221 bit EEPROM and 16 bit ROM
Counter with up to 33352 count units
Counter tearing protection fully compatible with Eurochip F

Features
• Member of Eurochip Family
with focus on state of the art security features
• 221 bit EEPROM and 16 bit ROM
104 bit user memory
– 64 bit Identification Area consisting of
• 16 bit Manufacturer Code for unique identification of application
• SLE 6636:
8 bit Manufacturer data, card issuer dependent (ROM)
40 bit for personalization data of card issuer (PROM)
• SLE 6636E:
48 bit for personalization data of card issuer (PROM)
– 40 bit Counter Area including 1 bit for personalization (PROM/EEPROM)
133 bit additional memory for advanced features
– 4 bit Counter Backup (anti-tearing flags)
– 1 bit initiation flag for Authentication Key 2
– 16 bit Data Area 1 for free user access
– 48 bit Authentication Key 1
– either 48 bit Data Area 2 for user defined data
or 48 bit Authentication Key 2
– 16 bit Data Area 3 for free user access
• Counter with up to 33352 count units
– Five stage abacus counter
– Due to testing purposes a maximum of 21064 count units is guaranteed
• Counter tearing protection fully compatible with Eurochip Family
– Backup feature activated at choice by the terminal
Note: Counter tearing protection may be disabled permanently during the manufacturing phase
on customer demand (Backup bits always „1“)
• High security authentication unit
Individual card authentication based on Extended Authentication mode of Eurochip 2
– Individual secret Authentication Key 1
– Optional individual secret Authentication Key 2
– Random number as challenge
– Calculation of up to 16 bit response
– Optional Response calculation with Cipher Block Chaining
– Certification of the counter value
– Calculation of a 16 bit response within 30 ms at a clock frequency of 100 kHz