Infineon Technologies SLE 55R04 P-MCC2-2-1

Overview

SLE 55R04 P-MCC2-2-1 from Infineon Technologies is a contactless smart card IC compliant with ISO/IEC 14443 Type A, integrating 770-byte EEPROM (616 bytes user + 154 bytes admin), 13.56 MHz RF interface, 106 kbit/s data rate, and dual-key hierarchical security logic for mutual authentication. It operates in passive proximity cards for secure transit ticketing and access control systems.

For engineers reviewing the SLE 55R04 datasheet, SLE 55R04 pinout, SLE 55R04 application, or SLE 55R04 equivalent, key selection criteria include ISO/IEC 14443-A compliance, sector-based key management, configurable value counters, anti-tearing support, and 10 cm typical coupling distance-critical for embedded contactless reader integration and multi-application card design.

Technical Context

The SLE 55R04 implements a fully integrated analog contactless interface with rectifier, voltage regulator, clock extractor, and ASK 100% modulation/demodulation supporting cascade-level 1 and 2 anticollision per ISO/IEC 14443-3. Its crypto unit performs 64-bit challenge-response authentication and generates 32-bit MACs for data integrity.

Memory is organized into 77 pages (8 data + 2 admin bytes each), grouped into up to 15 configurable sectors; one sector may be opened without authentication. The control unit enforces page-level access conditions tied to specific keys, permitting only one open sector per session.

Key Specifications

Pinout & Package

Package: MCC2-2-1 module form factor for embedding in plastic contactless smart cards; no external power or digital I/O pins-energy and data transferred exclusively via integrated antenna interface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless secure memory applications.

Compared with SLI52R04P, SLE 55R04 offers lower memory density but identical security primitives and smaller die size-ideal for cost-sensitive, space-constrained cards. Versus MIFARE Classic EV1 1K, it provides stronger cryptographic flexibility and hardware-enforced counter integrity, though requiring updated SAM firmware.

Availability

SLE 55R04 P-MCC2-2-1 is available at Aetrix Electronics and suitable for public transport ticketing, physical access control, electronic identity issuance, and loyalty program cards requiring stable component supply and long-term lifecycle assurance.

Supply support for SLE 55R04 P-MCC2-2-1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies AG is a German semiconductor manufacturer specializing in security ICs, power management, and automotive electronics, with global R&D and manufacturing facilities.

The SLE 55Rxx product line was designed specifically for high-assurance contactless smart cards-targeting ISO/IEC 14443-A systems requiring hierarchical key management, hardware counters, and anti-tearing reliability in transit, ID, and payment applications.

FAQ

What is the maximum operating distance for SLE 55R04 P-MCC2-2-1?

The typical coupling distance is 0–10 cm under standard reader antenna conditions (ISO/IEC 14443-A compliant). Actual range depends on reader field strength, antenna geometry, and card placement. No internal oscillator or battery is used-the IC draws power entirely from the 13.56 MHz RF field.

Does SLE 55R04 support ISO/IEC 14443 Type B?

No. SLE 55R04 is strictly compliant with ISO/IEC 14443 Type A only, including ASK 100% modulation, bit-oriented anticollision, and frame format per Parts 2 and 3. It does not implement PSK modulation or Type B-specific protocols such as TR2 or TR3 timing.

How many keys can be stored in the Key Area?

The Key Area supports up to 14 key pairs (28 individual keys), allocated across sectors. Each sector may use two distinct keys-one for read/write and another for value counter operations-enabling hierarchical access control without cross-sector key reuse.

Is the unique serial number readable without authentication?

Yes. The 4- or 7-byte unique serial number (UID) is transmitted during anticollision and is readable in plain mode before any authentication. It is factory-programmed, unchangeable, and used as input to all cryptographic operations-including challenge generation and MAC calculation.