Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > RF and Wireless > RFID, RF Access, Monitoring ICs

STMicroelectronics M24LR64-RMB6T/2

Name: M24LR64-RMB6T/2
Brand: STMicroelectronics
SKU: M24LR64-RMB6T/2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: M24LR64-RMB6T/2

Manufacturer:: STMicroelectronics

Category:: RFID, RF Access, Monitoring ICs

Package:: 8-UFDFN Exposed Pad

Datasheet:: M24LR64-RMB6T/2.pdf

Description:: 13.56MHZ 64KBIT EEPROM UFDFPN8

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,059

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

M24LR64-RMB6T/2 from STMicroelectronics is a dual-interface Dynamic NFC/RFID tag IC integrating 64-Kbit EEPROM, I²C bus (up to 400 kHz), and ISO 15693/ISO 18000-3 Mode 1 RF interface at 13.56 MHz. It supports simultaneous wired and contactless access to shared memory, enabling secure data exchange in smart packaging, asset tagging, and industrial IoT edge nodes.

For engineers reviewing the M24LR64-RMB6T/2 datasheet, M24LR64-RMB6T/2 pinout, M24LR64-RMB6T/2 application, or M24LR64-RMB6T/2 equivalent, key selection criteria include dual-interface concurrency, 64-bit UID, sector-level password protection (RF + I²C), 1.8–5.5 V supply range, and ECOPACK2® SO8/TSSOP8/UFDFPN8 package compatibility.

Technical Context

The M24LR64-RMB6T/2 implements a true dual-port memory architecture: I²C accesses 8192-byte linear address space, while RF commands operate on 2048 × 32-bit blocks. Internal arbitration prevents concurrent write conflicts between interfaces.

Its RF subsystem complies fully with ISO 15693 physical layer (10%/100% ASK modulation, Manchester load modulation) and supports Fast commands for 53 kbit/s read throughput. The integrated 27.5 pF tuning capacitance simplifies antenna matching without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory capacity	64-Kbit EEPROM: 8192 bytes via I²C; 2048 × 32-bit blocks via RF - enables unified data storage across wired and wireless domains
I²C interface speed	Up to 400 kHz - supports standard-mode I²C microcontrollers without timing redesign
RF interface standard	ISO 15693 & ISO 18000-3 Mode 1 - ensures interoperability with commercial RFID readers and NFC smartphones
Supply voltage range	1.8 V to 5.5 V - allows direct connection to 3.3 V or 5 V host systems without level-shifting
Write endurance	>1 million cycles - suitable for high-frequency logging or configuration updates in field-deployed devices
Data retention	>40 years - guarantees long-term integrity of calibration data, firmware metadata, or regulatory records
Security model	Multiple password protection in RF mode; single password in I²C mode - enforces layered access control per interface

Pinout & Package

Available in three RoHS-compliant, halogen-free ECOPACK2® packages: SO8 (MN, 150 mil width), TSSOP8 (DW), and UFDFPN8 (MC, 2 × 3 mm). Pin functions are identical across variants.

Pin/Terminal	Circuit Role	Design Meaning
SCL	I²C Serial Clock	Input clock for synchronous I²C communication; supports 400 kHz protocol timing
SDA	I²C Serial Data	Open-drain bidirectional data line; requires external pull-up resistor
E0, E1	Chip Enable Inputs	Hardwired address select pins defining I²C slave address (0x50–0x57)
AC0, AC1	RF Antenna Terminals	Differential connection points for external LC tank; internal 27.5 pF tuning capacitance reduces component count
VCC	Power Supply	Single supply input (1.8–5.5 V); powers both I²C logic and RF front-end
VSS	Ground	Common reference for I²C signals and RF circuitry; must be low-impedance

Key Features

Feature	Design Value
Dual-interface memory arbitration	Hardware-enforced mutual exclusion prevents data corruption during concurrent I²C/RF access
Fast RF command set	Enables 53 kbit/s read throughput - cuts inventory time by >60% vs. standard ISO 15693 commands
Integrated RF tuning capacitance	27.5 pF internal capacitor - eliminates need for external trim cap in most antenna designs
64-bit unique identifier (UID)	Factory-programmed, unalterable UID - provides cryptographic binding for device authentication
Multi-layer security	Independent password systems for I²C (single) and RF (multiple sectors) - enables role-based access control

Applications

Smart Product Authentication

Industrial Asset Tagging

Use Scenario: Verifying genuine spare parts in automotive service centers using handheld NFC readers.

IC Role / Device Role / Timing Role: Acts as tamper-resistant identity anchor storing cryptographic keys and production batch data.

Use Value: Prevents counterfeit part installation by enforcing UID-based challenge-response authentication during service workflow.

Use Scenario: Tracking calibration history and maintenance logs for CNC machine tooling fixtures.

IC Role / Device Role / Timing Role: Serves as non-volatile, contactless-accessible memory node attached to metal-mounted tags.

Use Value: Enables offline logging via I²C-connected PLCs and audit retrieval via NFC-enabled tablets without physical connectors.

Reusable Packaging Monitoring

Medical Device Configuration

Use Scenario: Recording fill cycles and sterilization counts on pharmaceutical transport containers.

IC Role / Device Role / Timing Role: Stores lifecycle counters and environmental exposure flags accessible via both factory line scanners and hospital NFC terminals.

Use Value: Ensures container retirement after 20 sterilization cycles by enforcing write-limited sector protection in RF mode.

Use Scenario: Storing device-specific calibration coefficients and usage limits on portable ultrasound probes.

IC Role / Device Role / Timing Role: Provides secure, field-updatable parameter storage with I²C access for OEM service tools and RF access for clinical QA checks.

Use Value: Eliminates manual calibration entry errors by auto-loading validated coefficients during probe initialization.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-interface RFID tag applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ST25DV64K	Same manufacturer, newer generation: 64-Kbit, I²C + ISO 15693, but adds dynamic switching, NDEF support, and enhanced RF sensitivity (+3 dB)	Supports NFC Forum Type 5 tag operation and dynamic register mapping - required for Android Beam/NDEF-based workflows	Select when NFC smartphone compatibility beyond basic ISO 15693 is mandatory and legacy design constraints allow footprint change (TSSOP8 → UFDFPN8)
NXH3670	NXP chip: 64-Kbit EEPROM, ISO 15693, but lacks I²C interface - RF-only with proprietary command set	No wired interface; relies entirely on contactless access - unsuitable for systems requiring local microcontroller co-location	Choose only for pure RFID deployments where I²C connectivity is unnecessary and NXP ecosystem integration is preferred

Compared with ST25DV64K, M24LR64-RMB6T/2 offers broader I²C voltage tolerance (1.8–5.5 V vs. 1.7–3.6 V) and proven field reliability in industrial environments; versus NXH3670, it delivers deterministic wired fallback for critical configuration recovery when RF link is obstructed.

Availability

M24LR64-RMB6T/2 is available at Aetrix Electronics and suitable for smart packaging authentication, industrial asset tracking, reusable logistics monitoring, and medical device configuration requiring stable component supply across multi-year production cycles.

Supply support for M24LR64-RMB6T/2 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 management ICs, sensors, and analog/mixed-signal products for industrial, automotive, and consumer markets.

The M24LR series targets secure, dual-interface identification and data logging in constrained-edge applications - emphasizing interoperability, long-term data integrity, and simplified antenna integration for system designers.

FAQ

Does M24LR64-RMB6T/2 support NFC Forum Type 4 tag operation?

No. It implements ISO 15693/ISO 18000-3 Mode 1 physical and MAC layers only - not ISO 14443A/B or NFC Forum Type 4 protocols. It is compatible with ISO 15693 readers and NFC smartphones operating in reader/writer mode for ISO 15693 tags, but does not support peer-to-peer or card emulation modes defined in NFC Forum specifications.

Can I²C and RF interfaces access memory simultaneously?

No. The device uses hardware arbitration to prevent concurrent writes: an active I²C transaction locks RF access, and vice versa. Reads may occur concurrently only if no write is in progress on either interface. This ensures data coherency without software coordination overhead.

What is the maximum recommended antenna loop inductance for AC0/AC1?

For optimal 13.56 MHz resonance with the internal 27.5 pF capacitance, the external antenna inductance should be 1.0–1.3 µH. Typical PCB spiral antennas measuring 35–45 mm diameter achieve this range; exceeding 1.5 µH risks detuning and reduced read range below 5 cm.

How is password protection implemented in RF mode?

RF password protection operates per 32-bit block sector: each sector has independent lock bits and password fields stored in dedicated system memory. Presenting the correct password unlocks write access to that sector only - other sectors remain protected until their respective passwords are supplied.

M24LR64-RMB6T/2 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-UFDFN Exposed Pad

Packaging:: Cut Tape (CT)

Product Status:: Obsolete

Type:: RFID Transponder

Frequency:: 13.56MHz

Standards:: ISO 15693, ISO 18000-3, NFC

Interface:: I2C

Voltage - Supply:: 1.8V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-UFDFPN (2x3)

M24LR64-RMB6T/2 FAQ

1.How can I place an order for M24LR64-RMB6T/2 through Aetrix?

Please submit a Request for Quotation (RFQ) for M24LR64-RMB6T/2 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 M24LR64-RMB6T/2 reliable?

The price and inventory of M24LR64-RMB6T/2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24LR64-RMB6T/2 is usually 5 days.

3.What payment methods are accepted for M24LR64-RMB6T/2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24LR64-RMB6T/2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M24LR64-RMB6T/2?

M24LR64-RMB6T/2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M24LR64-RMB6T/2 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 M24LR64-RMB6T/2?

For technical support, including M24LR64-RMB6T/2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24LR64-RMB6T/2 requirements.

6.How does Aetrix verify that M24LR64-RMB6T/2 is sourced from the original manufacturer or authorized distributors?

All M24LR64-RMB6T/2 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 M24LR64-RMB6T/2 meets industry standards.

7.What is the process for return or replacement of M24LR64-RMB6T/2?

All M24LR64-RMB6T/2 units undergo pre-shipment inspection (PSI). If there is an issue with M24LR64-RMB6T/2, 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 M24LR64-RMB6T/2 part is unused and in its original packaging.

Return procedure for M24LR64-RMB6T/2:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…