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STMicroelectronics LRI64-A7T/2GE
- Part No.:
- LRI64-A7T/2GE
- Manufacturer:
- STMicroelectronics
- Category:
- RFID Transponders, Tags
- Package:
- Datasheet:
-
LRI64-A7T/2GE.pdf
- Description:
- RFID TAG R/W 13.56MHZ INLAY
- Quantity:
- Payment:
- Shipping:
Inventory:1,955
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Product details
Overview
LRI64-A7T/2GE from STMicroelectronics is a contactless 13.56 MHz RFID memory tag IC compliant with ISO 15693 and ISO 18000-3 Mode 1, featuring a 120-bit non-volatile memory (64-bit UID + 7×8-bit WORM user area), 26 Kbit/s data rate in both directions, and internal tuning capacitors (21 pF / 28.5 pF / 97 pF) for antenna matching. It operates via inductive coupling, supports EAS functionality, and targets item-level identification in logistics and asset tracking.
For engineers reviewing the LRI64-A7T/2GE datasheet, LRI64-A7T/2GE pinout, LRI64-A7T/2GE application, or LRI64-A7T/2GE equivalent, key selection criteria include ISO 15693 protocol compliance, WORM block write-once behavior, 7 ms typical programming time, and UFDFPN8 (2 × 3 mm²) package compatibility with high-density RFID inlay assembly.
Technical Context
The LRI64-A7T/2GE implements a reader-talks-first (RTF) protocol with strict timing constraints: t1 response delay ≤ 250 µs, t2 new request delay ≥ 100 µs, and t3 no-response delay ≥ 1 ms. It uses "1-out-of-4" pulse position coding for VCD→IC communication and Manchester-coded load modulation at 423 kHz subcarrier for IC→VCD transmission - both at 26 Kbit/s.
Memory is organized into 15 × 8-bit blocks: blocks 0–7 store the factory-programmed 64-bit UID (with IC_ID = 02h in block 6 and E0h in block 7), block 8 holds AFI, block 9 holds DSFID, and blocks 10–14 constitute the 7-block WORM user area. Each WORM block auto-locks after first valid write; read/write commands operate on 8-bit block granularity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 13.56 MHz ±7 kHz - matches ISO 15693/18000-3 Mode 1 carrier tolerance for interoperability with standard readers. |
| Data Rate (both directions) | 26 Kbit/s - enables fast inventory cycles in multi-tag environments without requiring extended field dwell time. |
| Memory Architecture | 120-bit total: 64-bit UID (blocks 0–7) + 8-bit AFI + 8-bit DSFID + 56-bit WORM (blocks 10–14) - supports secure, immutable item serialization. |
| WORM Programming Time | 7 ms (typical) - defines minimum inter-command gap for reliable one-time writes in production encoding stations. |
| Data Retention | >40 years - ensures long-term validity of UID and WORM data in archival or lifetime-asset applications. |
| Internal Tuning Capacitors | 21 pF / 28.5 pF / 97 pF - allows fine-tuning of antenna resonance without external components, reducing inlay BOM count. |
| EAS Capability | Software-controlled - enables integration into retail loss-prevention systems via command-driven activation/deactivation. |
Pinout & Package
Package: UFDFPN8 (MLP8), 8-lead ultra-thin fine-pitch dual flat no-lead, 2 × 3 mm² footprint, ECOPACK® RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC0 | Antenna coil terminal 0 | Direct bond pad for one end of external loop antenna; forms resonant LC tank with internal capacitor options. |
| AC1 | Antenna coil terminal 1 | Direct bond pad for opposite end of external loop antenna; completes RF energy harvesting path. |
| n/c (pins 3–8) | No internal connection | Unused pads; must remain unconnected per design - no pull-up/down or routing required. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 15693 & ISO 18000-3 Mode 1 compliance | Guarantees interoperability with commercial RFID infrastructure including handheld readers, portal gates, and fixed-mount interrogators. |
| 64-bit unique identifier (UID) | Factory-programmed, globally unique serial number enabling deterministic anti-collision and database traceability per physical item. |
| 7 × 8-bit WORM user area | Immutable storage for customer-defined data (e.g., batch ID, calibration constants, firmware hash) that survives reprogramming attempts. |
| Electrical article surveillance (EAS) | On-chip EAS flag controllable via command - eliminates need for separate EAS circuitry in retail tagging solutions. |
| Internal tuning capacitors | Three selectable values reduce antenna matching complexity and improve yield in flexible inlay manufacturing. |
Applications
| Inventory Management | Retail Asset Tracking |
|---|---|
|
Use Scenario: High-speed scanning of palletized goods at warehouse dock doors using fixed RFID portals. IC Role / Device Role / Timing Role: Passive tag IC providing UID and WORM-stored lot/batch data to reader during ISO 15693 Inventory sequence. Use Value: Enables sub-second identification of 50+ items simultaneously without line-of-sight, reducing manual verification labor by >90%. |
Use Scenario: Clothing item tagging for automated checkout and real-time stock reconciliation in fashion retail. IC Role / Device Role / Timing Role: ISO-compliant tag responding to VCD commands with UID and EAS-enable bit for loss prevention integration. Use Value: Supports dual-mode operation - seamless transition between sales floor detection and point-of-sale reading using same hardware. |
| Medical Device Serialization | Industrial Tool Authentication |
|
Use Scenario: Sterilizable surgical instrument tracking across cleaning, storage, and operating room deployment cycles. IC Role / Device Role / Timing Role: WORM memory storing manufacturer ID, model, and sterilization count; UID ensures UDI compliance. Use Value: Immutable record prevents tampering with regulatory-mandated usage history, satisfying FDA 21 CFR Part 820 requirements. |
Use Scenario: Calibration-critical hand tools (e.g., torque wrenches) authenticated before use in aerospace assembly lines. IC Role / Device Role / Timing Role: Stores calibrated torque value and expiry date in WORM blocks; UID links to central calibration database. Use Value: Eliminates paper-based calibration logs; automatic rejection of expired tools during tool crib check-out. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RFID memory tag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SL2 ICS20 | Same ISO 15693 compliance, 64-bit UID, but 128-bit WORM (16 blocks) and no internal tuning caps - requires external matching network. | Higher user memory capacity suits complex configuration storage; less suitable for ultra-thin inlays due to external component requirement. | Select when >56 bits of WORM data are needed and antenna design permits external capacitors. |
| Tag-it HF-I Plus | ISO 15693 compliant, 64-bit UID, 128-bit user memory, but only 10 Kbit/s max data rate and no EAS support. | Better suited for low-cost, low-throughput applications like library book tagging where EAS is unnecessary. | Choose for cost-sensitive deployments where speed and EAS are secondary to unit price. |
Compared with SL2 ICS20 and Tag-it HF-I Plus, the LRI64-A7T/2GE uniquely balances compact WORM capacity, integrated antenna tuning, and full EAS capability in a 2×3 mm² package - making it optimal for space-constrained, security-aware industrial tagging.
Availability
LRI64-A7T/2GE is available at Aetrix Electronics and suitable for inventory management, retail asset tracking, medical device serialization, and industrial tool authentication requiring stable component supply across multi-year production programs.
Supply support for LRI64-A7T/2GE 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer markets.
The LRI64 belongs to ST's contactless RFID tag IC product line, engineered specifically for high-reliability, standards-compliant item identification in demanding logistics, healthcare, and manufacturing environments.
FAQ
Is the LRI64-A7T/2GE still in active production?
No - STMicroelectronics has marked the LRI64-A7T/2GE as obsolete per its official documentation (Rev 8, August 2008). However, Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle support including last-time buy planning and cross-reference guidance for migration paths.
Can the 64-bit UID be rewritten after initial programming?
No - the UID is factory-programmed during wafer test and permanently locked. Blocks 0–7 contain the UID (including IC_ID = 02h in block 6 and E0h in block 7); these are read-only and cannot be altered by any command, including Write Block.
What is the maximum allowable antenna inductance for reliable operation?
Based on the internal tuning capacitor options (21 pF, 28.5 pF, 97 pF) and 13.56 MHz resonance target, the recommended antenna inductance range is 1.0–1.8 µH. Values outside this range may cause detuning, reduced read range, or failure to power up under weak field conditions.
Does the LRI64-A7T/2GE support password protection or cryptographic security?
No - the LRI64-A7T/2GE implements no access control, encryption, or password mechanisms. Security relies solely on physical separation, UID uniqueness, and WORM immutability. For authenticated communication, external host-level security or migration to ST's ST25DV series is required.
LRI64-A7T/2GE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- LRI64
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Style:
- Inlay
- Technology:
- Passive
- Frequency:
- 13.56MHz
- Memory Type:
- Read/Write
- Writable Memory:
- 120b (User)
- Standards:
- ISO 15693, ISO 18000-3
- Operating Temperature:
- -20°C ~ 85°C
- Size / Dimension:
- 2.992" L x 1.772" W (76.00mm x 45.00mm)
LRI64-A7T/2GE FAQ
1.How can I place an order for LRI64-A7T/2GE through Aetrix?
Please submit a Request for Quotation (RFQ) for LRI64-A7T/2GE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LRI64-A7T/2GE reliable?
The price and inventory of LRI64-A7T/2GE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LRI64-A7T/2GE is usually 5 days.
3.What payment methods are accepted for LRI64-A7T/2GE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LRI64-A7T/2GE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LRI64-A7T/2GE?
LRI64-A7T/2GE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LRI64-A7T/2GE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LRI64-A7T/2GE?
For technical support, including LRI64-A7T/2GE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LRI64-A7T/2GE requirements.
6.How does Aetrix verify that LRI64-A7T/2GE is sourced from the original manufacturer or authorized distributors?
All LRI64-A7T/2GE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LRI64-A7T/2GE meets industry standards.
7.What is the process for return or replacement of LRI64-A7T/2GE?
All LRI64-A7T/2GE units undergo pre-shipment inspection (PSI). If there is an issue with LRI64-A7T/2GE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LRI64-A7T/2GE part is unused and in its original packaging.
Return procedure for LRI64-A7T/2GE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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