HF 13.56 MHzNXP

ICODE SLIX2

Name: NXP ICODE SLIX2
Brand: NXP

The NXP ICODE SLIX2 is an HF 13.56 MHz RFID tag IC, with 2560 bits user memory (80 blocks × 4 bytes; last block reserved for 16-bit counter); total 2528 bits usable user memory, 50-year retention, 100,000 write cycles, operating at 13.56 MHz, under ISO/IEC 15693-2 ISO/IEC 15693-3.

Extended 2528-bit user memory ISO 15693

Official Datasheet ↗

Frequency

13.56 MHz

Protocol

ISO/IEC 15693-2, ISO/IEC 15693-3

Memory

2560 bits user memory (80 blocks × 4 bytes; last block reserved for 16-bit counter); total 2528 bits usable user memory, 50-year retention, 100,000 write cycles

Interface

RF contactless (no battery needed)

Temp Range

-40°C to +85°C (junction), -55°C to +125°C (storage)

Form Factor

Wafer (SL2S2602FUD/BG: 120 µm with 7 µm Polyimide spacer, bumped, on film frame), MOA8 module (SL2S2602FA8, SOT500-4), XSON3 package (SL2S2602FTB, SOT1122: 1×1.45×0.5 mm)

Full Specifications

Manufacturer	NXP
Frequency Category	HF 13.56 MHz
Frequency	13.56 MHz
Protocol	ISO/IEC 15693-2, ISO/IEC 15693-3
Memory	2560 bits user memory (80 blocks × 4 bytes; last block reserved for 16-bit counter); total 2528 bits usable user memory, 50-year retention, 100,000 write cycles
Interface	RF contactless (no battery needed)
Temperature Range	-40°C to +85°C (junction), -55°C to +125°C (storage)
Form Factor	Wafer (SL2S2602FUD/BG: 120 µm with 7 µm Polyimide spacer, bumped, on film frame), MOA8 module (SL2S2602FA8, SOT500-4), XSON3 package (SL2S2602FTB, SOT1122: 1×1.45×0.5 mm)
Security	32-byte ECC-based originality signature (secp128r1), unique 64-bit UID (read-only), 32-bit passwords (Read, Write, Privacy, Destroy, EAS/AFI), block-level write protection, page protection pointer, privacy mode, destroy mode

Engineering Brief

The ICODE SLIX2 (SL2S2602) is an HF 13.56 MHz RFID chip compliant with ISO/IEC 15693-2/3, offering 2528 bits of usable EEPROM user memory organized in 79 blocks of 4 bytes each (block 79 is a password-protectable 16-bit counter). It features a cryptographic originality signature using standard ECC (secp128r1 curve) for authentication, flexible memory segmentation with page-based read/write password protection, privacy mode, destroy mode, and Electronic Article Surveillance (EAS) with ID. Operating up to 1.5 m distance at up to 53 kbit/s data rate, the chip supports advanced inventory with persistent quiet mode and fast anti-collision, making it suitable for high-security supply-chain tracking, pharmaceutical anti-counterfeiting, and library automation. Available as bare die (bumped wafer), MOA8 module, or ultra-small XSON3 package.

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Frequently Asked Questions

How much memory does the ICODE SLIX2 have?

The ICODE SLIX2 provides 2528 bits of usable user memory organized as 79 blocks of 4 bytes each. Block 79 is reserved as a password-protectable 16-bit counter, leaving blocks 0-78 for general data storage.

What is the read range of the ICODE SLIX2?

The ICODE SLIX2 operates at up to 1.5 meters read distance, depending on antenna design and reader power. It communicates at data rates up to 53 kbit/s over the 13.56 MHz HF frequency.

Does the ICODE SLIX2 support authentication?

Yes, the ICODE SLIX2 features a 32-byte ECC-based originality signature using the secp128r1 curve for cryptographic authentication. It also has five separate 32-bit passwords (Read, Write, Privacy, Destroy, and EAS/AFI) for access control.

What is the difference between ICODE SLIX and SLIX2?

The ICODE SLIX2 adds cryptographic originality signature verification using ECC (secp128r1), additional password protection features, page protection pointer, and a dedicated password-protected counter block compared to the original ICODE SLIX.

Is the ICODE SLIX2 compatible with ISO 15693 readers?

Yes, the ICODE SLIX2 is fully compliant with ISO/IEC 15693-2 and ISO/IEC 15693-3 standards, ensuring compatibility with standard ISO 15693 HF RFID readers and infrastructure worldwide.

What is the privacy mode on ICODE SLIX2?

Privacy mode allows the ICODE SLIX2 to become unresponsive to inventory commands until unlocked with the correct 32-bit privacy password, protecting user data from unauthorized scanning in sensitive applications.

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