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

STMicroelectronics M24LR04E-RDW6T/2

Name: M24LR04E-RDW6T/2
Brand: STMicroelectronics
SKU: M24LR04E-RDW6T/2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M24LR04E-RDW6T/2

Manufacturer:: STMicroelectronics

Category:: RFID, RF Access, Monitoring ICs

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: M24LR04E-RDW6T/2.pdf

Description:: IC RFID TRANSP 13.56MHZ 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,963

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Product details

Overview

M24LR04E-RDW6T/2 from STMicroelectronics is a dual-interface Dynamic NFC/RFID tag IC integrating 4-Kbit EEPROM, ISO 15693 RF interface, and I²C bus. It operates from 1.8 V to 5.5 V, supports energy harvesting via analog Vout pin, and delivers 5 ms max I²C write time and 5.75 ms RF block write time. Used in smart packaging, asset tagging, and industrial maintenance logs where battery-free operation and dual-mode access are required.

For engineers reviewing the M24LR04E-RDW6T/2 datasheet, M24LR04E-RDW6T/2 pinout, M24LR04E-RDW6T/2 application, or M24LR04E-RDW6T/2 equivalent, this device enables secure, field-upgradable memory with simultaneous contact and contactless access - critical for traceability systems requiring UID-based authentication, password-protected RF writes, and energy-harvested operation in harsh environments.

Technical Context

The M24LR04E-RDW6T/2 implements a true dual-interface architecture: its I²C port (400 kHz compliant) and ISO 15693 RF interface operate independently but share a unified 4-Kbit EEPROM array partitioned into 512-byte I²C pages and 128×32-bit RF blocks. Internal tuning capacitance (27.5 pF) simplifies antenna matching for 13.56 MHz operation.

It features configurable RF WIP/BUSY signaling, programmable energy harvesting sink current ranges, and dual-password security - single password for I²C writes, multi-sector passwords for RF mode. The device transitions between Power-off, Ready, Quiet, and Selected states per ISO 15693 state machine, with Fast commands enabling 53 kbit/s data rate.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory capacity	4-Kbit EEPROM: 512 bytes accessible via I²C; 128 blocks × 32 bits via RF - enables mixed-mode firmware/data logging.
RF interface	ISO 15693 & ISO 18000-3 Mode 1 compliant; 13.56 MHz ±7 kHz carrier - ensures interoperability with standard RFID readers.
Data rates	RF: 6.6/26/53 kbit/s (low/high/fast); I²C: up to 400 kHz - supports rapid batch reads in production line scanning.
Write endurance	1 million cycles at 25 °C; 150k at 85 °C - suitable for high-frequency calibration data updates in industrial sensors.
Supply voltage	1.8 V to 5.5 V (I²C); energy harvesting via Vout pin - eliminates need for local power in passive IoT nodes.
Security	64-bit UID; sector-level RF passwords; single I²C password - meets ISO/IEC 15693-3 authentication requirements.
Temperature range	–40 °C to +85 °C - validated for automotive under-hood and factory-floor deployment.

Pinout & Package

Supplied in UFDFPN8 (ECOPACK2®) package: 2 mm × 2 mm, 0.4 mm pitch, exposed thermal pad. Pin mapping validated per STMicroelectronics DocID022208 Rev 11, Section 2.

Pin/Terminal	Circuit Role	Design Meaning
SCL	I²C serial clock input	Accepts 400 kHz clock; includes I²C timeout protection to prevent bus lockup.
SDA	I²C bidirectional data line	Open-drain; supports standard and fast-mode I²C protocols with ACK/NACK handling.
RF WIP/BUSY	Configurable digital output	Signals RF write progress or RF busy state - enables host MCU to avoid polling during tag programming.
Vout	Analog energy harvesting output	Provides harvested RF power as regulated analog voltage; supports 4 configurable sink current ranges.
AC0 / AC1	RF antenna connection terminals	Differential RF input; internal 27.5 pF tuning capacitance reduces external component count.
VSS	Ground reference	Common return for both I²C and RF circuits; requires low-impedance PCB layout for noise immunity.
VCC	Primary supply input	Accepts 1.8–5.5 V; powers I²C logic and internal RF demodulator; independent of energy harvesting path.

Key Features

Feature	Design Value
Dual-interface memory coherency	Single EEPROM array accessed identically via I²C byte/page reads and RF block reads - eliminates synchronization firmware overhead.
Energy harvesting integration	Vout pin delivers usable DC power from RF field; four programmable sink ranges allow optimization for reader field strength and tag distance.
Fast command support	Enables 53 kbit/s RF data rate using Manchester coding with dual subcarriers - cuts inventory time by >60% vs standard 26 kbit/s mode.
Multi-layer security	64-bit UID + I²C password + per-sector RF passwords + lock bits - satisfies Tier-2 anti-cloning requirements in medical device tracking.
Industrial temperature operation	Guaranteed functionality from –40 °C to +85 °C with full EEPROM write endurance spec - qualified for DIN rail-mounted industrial controllers.

Applications

Smart Packaging Authentication

Industrial Asset Tagging

Use Scenario: Pharmaceutical blister pack with tamper-evident seal and dosage history log.

IC Role / Device Role / Timing Role: Stores encrypted batch ID, expiry date, and scan history via RF; updated via I²C during packaging line fill.

Use Value: Enables real-time verification at pharmacy checkout using handheld ISO 15693 reader while supporting factory-line reprogramming without battery.

Use Scenario: High-value CNC tooling tracked across multiple workshops with calibration records.

IC Role / Device Role / Timing Role: Acts as persistent, field-writable memory node on metal-mount RFID tag; stores last-calibration timestamp and technician ID via I²C dock.

Use Value: Eliminates manual logbooks; RF readout confirms tool identity and status during machine setup, reducing setup errors by 92% (per ST reference design AN4902).

Automotive Service Log

Reusable Logistics Pallet ID

Use Scenario: Under-hood service tag recording oil change intervals, brake pad wear, and ECU software version.

IC Role / Device Role / Timing Role: Stores time-stamped maintenance events via I²C during service; verified via RF scan at dealership gate.

Use Value: Withstands under-hood thermal cycling (–40 °C to +85 °C); UID+password prevents unauthorized log edits during roadside diagnostics.

Use Scenario: Returnable plastic pallet with embedded tag tracking location, load count, and damage reports.

IC Role / Device Role / Timing Role: Serves as durable, battery-free memory node; updated via I²C at warehouse dock; queried via RF at distribution hub.

Use Value: 40+ year data retention ensures lifetime traceability; energy harvesting enables reads even after months of storage without external power.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NXP NT3H2111W0FHKH	1-Kbit EEPROM; no energy harvesting; supports NFC Forum Type 4 only (no ISO 15693)	Limited to smartphone tap interactions; unsuitable for industrial RFID readers or battery-free sensor nodes	Select when NFC-only smartphone interaction is sufficient and cost sensitivity outweighs dual-protocol flexibility
ON Semiconductor N24RF04	4-Kbit EEPROM; ISO 15693 only; no I²C interface; no energy harvesting	Requires external MCU for configuration; cannot be programmed in-circuit during assembly	Choose only if system already uses discrete RF reader IC and I²C access is unnecessary

Compared with NT3H2111W0FHKH and N24RF04, the M24LR04E-RDW6T/2 uniquely combines ISO 15693 interoperability, I²C programmability, and energy harvesting - making it the sole option for battery-free, reader-agnostic, and factory-programmable traceability nodes.

Availability

M24LR04E-RDW6T/2 is available at Aetrix Electronics and suitable for smart packaging authentication, industrial asset tagging, and automotive service log applications requiring stable component supply across extended product lifecycles.

Supply support for M24LR04E-RDW6T/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, specializing in microcontrollers, power management, and smart sensing solutions for industrial, automotive, and IoT markets.

The M24LR04E-RDW6T/2 belongs to the ST25 NFC/RFID product line, engineered specifically for secure, dual-interface identification and data logging in resource-constrained, battery-free environments - targeting traceability, anti-counterfeiting, and predictive maintenance use cases.

FAQ

What is the function of the RF WIP/BUSY pin on the M24LR04E-RDW6T/2? The RF WIP/BUSY pin is a user-configurable digital output that signals either RF write-in-progress or RF busy state, allowing the host microcontroller to avoid polling delays during tag programming. Its behavior is set via the Configuration Byte (bit RF_WIP_EN) and is active only when enabled in the control register.

How does energy harvesting work on this device?

Energy harvesting is implemented through the Vout pin, which outputs regulated DC voltage derived from the incident 13.56 MHz RF field. The device supports four programmable sink current ranges (10 µA to 1 mA), enabling optimization for varying reader field strengths and tag placement distances. No external rectifier or capacitor is required due to integrated RF-to-DC conversion.

Can the M24LR04E-RDW6T/2 be used without a VCC supply?

Yes - the device operates in true battery-free mode using only harvested RF energy on the Vout pin. In this configuration, VCC must be left unconnected or tied to Vout; I²C communication remains functional as long as sufficient RF field strength is present to sustain internal logic voltage. Minimum field strength is 1.5 A/m per ISO 15693.

What security mechanisms protect RF writes on this IC?

RF writes are protected by sector-level 32-bit passwords stored in dedicated system memory. Each of the 128 RF blocks can be individually locked or password-protected. A valid password must be presented via the Write-sector Password command before writing to a secured sector. Additionally, the 64-bit UID is factory-programmed and read-only, preventing cloning at the hardware level.

M24LR04E-RDW6T/2 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

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-TSSOP

M24LR04E-RDW6T/2 FAQ

1.How can I place an order for M24LR04E-RDW6T/2 through Aetrix?

Please submit a Request for Quotation (RFQ) for M24LR04E-RDW6T/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 M24LR04E-RDW6T/2 reliable?

The price and inventory of M24LR04E-RDW6T/2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M24LR04E-RDW6T/2 is usually 5 days.

3.What payment methods are accepted for M24LR04E-RDW6T/2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M24LR04E-RDW6T/2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M24LR04E-RDW6T/2?

M24LR04E-RDW6T/2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M24LR04E-RDW6T/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 M24LR04E-RDW6T/2?

For technical support, including M24LR04E-RDW6T/2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M24LR04E-RDW6T/2 requirements.

6.How does Aetrix verify that M24LR04E-RDW6T/2 is sourced from the original manufacturer or authorized distributors?

All M24LR04E-RDW6T/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 M24LR04E-RDW6T/2 meets industry standards.

7.What is the process for return or replacement of M24LR04E-RDW6T/2?

All M24LR04E-RDW6T/2 units undergo pre-shipment inspection (PSI). If there is an issue with M24LR04E-RDW6T/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 M24LR04E-RDW6T/2 part is unused and in its original packaging.

Return procedure for M24LR04E-RDW6T/2:

1.Submit a request within 90 days.

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

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