Infineon Technologies SLE66R01PNBX1SA1

Overview

SLE66R01PNBX1SA1 from Infineon Technologies is an intelligent contactless smart card IC integrating 1216-bit EEPROM, ISO/IEC 14443-3 Type A compliant RF interface, and NFC Forum™ Type 2 Tag operation mode. It features a double-size UID (7-byte), configurable password protection with retry counter, and dual 16-bit value counters with anti-tearing. Used in secure transit ticketing, NFC-enabled loyalty cards, and access control tokens where tamper-resistant memory and standardized tag behavior are required.

For engineers reviewing the SLE66R01PNBX1SA1 datasheet, SLE66R01PNBX1SA1 pinout, SLE66R01PNBX1SA1 application, or SLE66R01PNBX1SA1 equivalent, key selection criteria include ISO/IEC 14443-3A RF compliance, NFC Forum Type 2 static/dynamic memory structure support, UID length, password-protected write access, and dual value counter integrity under power loss.

Technical Context

The device implements a passive 13.56 MHz contactless interface with load modulation for communication with ISO/IEC 14443-3A readers. Its memory is partitioned into two user areas (1024 bits total), two service areas (including UID and configuration byte), OTP block, and manufacturer block - all accessible via standardized command set including RD4B, WR1B, CPTWR, DCR16, and HLTA.

It supports both my-d™move and my-d™move NFC transport configurations, enabling interoperability across legacy and NFC-enabled ecosystems. The dual 16-bit value counters feature atomic decrement with anti-tearing logic, and the configuration byte governs lock states, UID format, and NFC Type 2 behavior - all protected by password-controlled access and hardware locking mechanisms.

Key Specifications

Pinout & Package

Package: WLCSP-6 (Wafer-Level Chip Scale Package, 0.4 mm pitch, 1.2 × 1.2 mm footprint). Die-level pin configuration per Figure 1 includes six terminals optimized for embedded antenna integration in thin smart cards and tags.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar contactless EEPROM tag applications.

Compared with SLE66R01PNBX1SA1, MIFARE Classic 1K offers broader legacy reader support but no NFC Forum Type 2 standardization, while NT3H2111 provides richer NDEF capabilities but omits hardware-enforced value counter integrity - making SLE66R01PNBX1SA1 optimal for tamper-critical prepaid use cases.

Availability

SLE66R01PNBX1SA1 is available at Aetrix Electronics and suitable for transit ticketing systems, secure loyalty programs, physical access control infrastructure, and NFC-based identity credentials requiring stable component supply and long-term lifecycle assurance.

Supply support for SLE66R01PNBX1SA1 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, power management, and automotive ICs, with global R&D and manufacturing facilities.

SLE66R01PNBX1SA1 belongs to the my-d™move NFC product line, designed specifically for secure, standards-compliant contactless applications in public transport, payment, and identity markets - emphasizing interoperability, tamper resistance, and NFC Forum certification.

FAQ

Does SLE66R01PNBX1SA1 support ISO/IEC 14443-4?

No. This device implements only ISO/IEC 14443-3 Type A protocol layer (anti-collision and activation), not the higher-layer T=CL transport protocol defined in Part 4. It operates exclusively in Type A PICC mode with fixed frame structure and command set as specified in Sections 7–8 of the 2011 datasheet.

Can the 7-byte UID be customized during personalization?

No. The 7-byte UID is factory-programmed and permanently stored in the Manufacturer Block (address 25H); it cannot be altered post-production. Personalization is limited to user areas and password configuration via supported commands (SPWD, ACS, WR1B).

What happens when the password retry counter reaches zero?

The password-protected memory regions (Service Area 1, Configuration Byte, Password Block) become permanently write-locked. Read access remains functional, but no further writes - including password reset - are possible. This state is irreversible and enforced by dedicated hardware logic.

Is the WLCSP-6 package lead-free and RoHS-compliant?

Yes. Per Infineon's 2011 Product Change Notification and material declarations, SLE66R01PNBX1SA1 uses lead-free solder bumps and complies with EU RoHS Directive 2011/65/EU, with homogeneous lead content below 0.1 wt% in all package materials.