LRI2K:ISO15693 Tag IC with 64-bit UID, AFI, DSFID, anti-collision, kill function and 2048-bit

The LRI2K is a contactless memory powered by the received carrier electromagnetic wave. It is a 2048-bit electrically erasable programmable memory (EEPROM). The memory is organized as 64 blocks of 32 bits. The LRI2K is accessed via the 13.56 MHz carrier electromagnetic wave on which incoming data are demodulated from the received signal amplitude modulation (ASK: amplitude shift keying). The received ASK wave is 10% or 100% modulated with a data rate of 1.6 Kbit/s using the 1/256 pulse coding mode or a data rate of 26 Kbit/s using the 1/4 pulse coding mode.

Outgoing data are generated by the LRI2K load variation using Manchester coding with one or two subcarrier frequencies at 423 kHz and 484 kHz. Data are transferred from the LRI2K at 6.6 Kbit/s in low data rate mode and 26 Kbit/s fast data rate mode. The LRI2K supports 53 Kbit/s in high data rate mode with one subcarrier frequency at 423 kHz.

The LRI2K follows the ISO 15693 recommendation for radio-frequency power and signal interface.

Key Features

  • Belongs to the ST25 family, that includes all STMicroelectronics NFC/RFID tag and reader products
  • ISO 15693 standard fully compliant
  • ISO 18000-3 Mode 1 standard fully compliant
  • 13.56 MHz ±7 kHz carrier frequency
  • To tag: 10% or 100% ASK modulation using 1/4 (26 Kbit/s) or 1/256 (1.6 Kbit/s) pulse position coding
  • From tag: load modulation using Manchester coding with 423 kHz and 484 kHz subcarriers in low (6.6 Kbit/s) or high (26 Kbit/s) data rate mode. Supports the 53 Kbit/s data rate with Fast commands
  • Internal tuning capacitor (21 pF or 97 pF)
  • 1 000 000 Erase/Write cycles (minimum)
  • 40 year data retention (minimum)
  • 2048 bits EEPROM with Block Lock feature
  • 64-bit unique identifier (UID)
  • Electrical article surveillance capable (software controlled)
  • Kill function
  • Read & Write (Block of 32 bits)
  • 5 ms programming time
Product Specifications
DescriptionVersionSize
DS4631: 2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant9.0640 KB
Application Notes
DescriptionVersionSize
AN4054: Comparison of RF addressing modes of low-density and high-density ISO/IEC 15693 devices4.0273 KB
AN3408: Using LRIxx, LRISxx, M24LRxx-R and M24LRxxE-R products as NFC vicinity tags4.1962 KB
AN3992: Using an STM8L162M8 AES hardware accelerator with a CR95HF to encrypt contactless tag data memory3.2844 KB
AN2319: Using the 64-bit UID in contactless RFID applications2.264 KB
AN3985: Using the CR95HF library with STM8L microcontrollers2.21 MB
Technical Notes & Articles
DescriptionVersionSize
TN0076: Improving PCB traceability with RFID technology1.5345 KB
TN0047: LRI2K, an RFID IC with EAS and privacy protection for smart library labels1.3128 KB
TN0280: Migrating from the LRI2K to the LRI1K RFID IC1.175 KB
MCUs Embedded Software
Part NumberManufacturerDescription
STSW-STM8017STUsing an STM8L16x AES hardware accelerator with a CR95HF to encrypt contactless tag data memory (AN3992)
ST25 - NFC / RFID Software
Part NumberManufacturerDescription
STSW-M24LR002STPC software source code example for FEIG readers to be used with LRI & M24LR products (AN3224)
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
LRI2K-SBN18/1GENi/Au WaferNot Applicable-20850.121000NECEAR99-
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
LRI2K-SBN18/1GENi/Au WaferIndustrialN/Apaqm_p2220ma_signed.pdf
paqm_p2220ma.xml
2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant LRI2K
Comparison of RF addressing modes of low-density and high-density ISO/IEC 15693 devices M24LR16E-R
Using LRIxx, LRISxx, M24LRxx-R and M24LRxxE-R products as NFC vicinity tags M24LR16E-R
Using an STM8L162M8 AES hardware accelerator with a CR95HF to encrypt contactless tag data memory PLUG-CR95HF-B
Using the 64-bit UID in contactless RFID applications SRI512
Using the CR95HF library with STM8L microcontrollers PLUG-CR95HF-B
Improving PCB traceability with RFID technology SRI512
LRI2K, an RFID IC with EAS and privacy protection for smart library labels LRI2K
Migrating from the LRI2K to the LRI1K RFID IC LRI2K
paqm_p2220ma_signed.pdf LRI2K
paqm_p2220ma.xml LRI2K