SLE4466C

` 496 bit EEPROM and 16 bit mask-programmable ROM 128 bit Identification Area consisting of
16 bit Manufacturer code (mask-programmable ROM)
8 bit Manufacturer data (ROM)
104 bit for personalization data of card issuer (PROM)
    160 bit Value Counter (PROM/EEPROM)
    16 bit secret User Code (EEPROM)
    32 bit either secret Security Code or Data Area 3 in Standard User Mode (EEPROM)
    12 bit Data Area 1 (EEPROM)
    32 bit Data Area 2 (EEPROM)
    64 bit Response Counter
    64 bit secret Authentication Key
`Three Chip modes with secured memory access
   The memory is secured by different access codes dependent on the mode
Issuer Mode: The memory access is secured by the 4 byte Transport Code
Security User Mode: The memory access is secured by the 4 byte Security Code
Standard User Mode: The memory access is secured by the 2 byte User Code. The verification procedure is fully compatible with SLE 4404 The different chip modes are set by 3 flag bits.
    Only after a successful code verification the chip logic allows to write or erase the data according to the implemented functionality.
` Value Counter with up to 135232 count units Three stage abacus counter
Due to testing purposes a maximum of 127040 count units is guaranteed
` High security authentication unit 64 bit Random number as challenge
64 bit individual secret Authentication Key
Calculation of up to 31 bit response within 60 ms at a clock frequency of 100 kHz
Response calculation with cipher block chaining
Authentication access and response calculation controlled by the Response Counter
Four stage Response Counter with up to 69904 count units (61712 units guaranteed)
Certification of the decreasing of the Value Counter
Signature of the data content
` Memory access interface compatible with SLE4404
` Transport Code protection for delivery
` EEPROM security cells in sensitive areas
` Chip circuitry and chip layout kptimised for high security against physical and electrical signal analysis
`Ambient temperature-35 to +80
`Supply voltage 5V±10mA
`EEPROM programming time 5ms
`ESD protection typical 400V
`Endurance minimun105 write/erase cycles/bit <sup>1</sup>
`Data retertion for minimum of 10 years¹
`Contact configuration and Answer to Reset(synchronous transmission) in accordance to standard ISO/IEC 7816

SLE 4466 is designed for prepaid payment applications (e.g. vending machines, electronic metering) and secured payment applications (e.g. loyalty scheme). The chip consists of an EEPROM memory of 496 bit (incl. 8 bit Manufacturer data), a ROM of 16 bit, a control/security unit, a memory access control logic, a special computing unit for chip authentication and 3 flag bits for mode selection.