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SLE 66CLX321P

Short Product Information

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2004-04-01

Timers ease the implementation of advanced communication protocols such as T=CL (according

to ISO/IEC 14443-4) and all other time critical processes for contactless communications. Both

Timers features auto-reload mechanisms as well as their own dedicated interrupt vectors.

Additional interrupts capability of the RF interface module allows real time operation of the pure

contactless smart card with the contactless terminals.

SLE 66CLX321P is able to communicate with any Proximity Card Device (PCD) defined in

ISO/IEC 14443 such as the Infineon Evaluation Kit Proximity over a typical coupling distance of

10 cm. The power supply and data are received by an antenna, which consists of a coil with a few

turns directly connected to the IC. DES acceleration by a factor of more than 500 compared to

software solutions in combination with the high data transfer rate up to 848 Kbit/s keep the

transaction times short. For more independence and flexibility, the controller offers the two

modulation type A and type B according ISO/IEC 14443.

The Anticollision and Contactless Transmission Protocol are supported by open source

application notes for both Type A and B in order to offer a maximum flexibility to the

Operating System. Both Contactless Communication protocol may be implemented in the

Operating System while the final selection of the Type A or B is based upon the

personalisation data of the contactless smart card. The communication type can also be

changed during runtime in the field. Thus, SLE 66CLX321P ensures a simplified handling of the

ROM mask, high reactivity by a tailored personalisation during production of the contactless

smart card in order to answer to the increasing market demand and applications.

SLE 66CLX321P features a new Resource Management System (RMS_E) which optimizes

Contactless EEPROM write/erase routines. EEPROM programming is enhanced over the entire

communication distance compared to the standard RMS. Thus, the reduction of programming

times and power consumption is ensured independently of the use of the contact or the contactless

interface.

The CRC module allows the easy generation of checksums according to ISO/IEC 3309 (16-Bit-

CRC), thus it supports the two different CRC calculation required for ISO/IEC 14443 Type A and

Type B. Also, data as well as program located in the EEPROM can be extra-secured by a CRC

checksum enabling the Operating System to detect errors while downloading new application in

the field.

To minimize the overall power consumption, the pure contactless smart card controller can be set

into sleep mode.

The certified random number generator (RNG) is able to supply the CPU with true random

numbers on all conditions. It allows creating session key used for authentication in open networks

and enable secure downloading of new applications.

The DDES-EC2 accelerator consists of two modules.

The DDES module supports symmetrical crypto algorithms according to the Data Encryption

Standard in the Electronic Code Book Mode. It features two internal registers for storage of the two

keys required for a Triple DES computation. Together with the fast contactless interface, it offers

high security and high speed for contactless smart card applications.

curve cryptography. It widens the field of application for SLE 66CLX321P since it can be used as

tamper-resistant security tool for secured and authentic communication in open networks

using contactless operation.

The Advanced Crypto Engine (ACE) is equipped with its own RAM of 700 bytes and supports all of

today known public-key algorithms based on large integer modular arithmetic. It allows fast and

efficient calculation of e.g. RSA operations with key lengths up to 2048 bit and Elliptic Curve

GF (p).