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



Description バージョン サイズ
DS4631 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 compliant 9.0 640 KB
Technical Notes & Articles
Description バージョン サイズ
TN0076 TN0076: Improving PCB traceability with RFID technology 1.5 345 KB
TN0047 TN0047: LRI2K, an RFID IC with EAS and privacy protection for smart library labels 1.4 128 KB
TN0280 TN0280: Migrating from the LRI2K to the LRI1K RFID IC 1.1 75 KB

ツール & ソフトウェア

MCUs Embedded Software
ST25 - NFC / RFID Software
サポート & コミュニティ

サンプル & 購入

製品型番 パッケージ Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
LRI2K-SBN18/1GE Ni/Au Wafer Not Applicable -20 85 NRND 0.12 10000 NEC EAR99 - MORE INFO

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
LRI2K-SBN18/1GE NRNDNi/Au WaferIndustrialN/A 0 0

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.