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

STMicroelectronics ST25DV04K-IER8S3

Name: ST25DV04K-IER8S3
Brand: STMicroelectronics
SKU: ST25DV04K-IER8S3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST25DV04K-IER8S3

Manufacturer:: STMicroelectronics

Category:: RFID, RF Access, Monitoring ICs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ST25DV04K-IER8S3.pdf

Description:: IC RFID TRANSP 13.56MHZ 8SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ST25DV04K-IER8S3 from STMicroelectronics is a dynamic NFC/RFID tag IC with 4-Kbit EEPROM, dual I²C and ISO/IEC 15693 contactless interfaces, 1.8–5.5 V supply, 256-byte fast-transfer buffer, and configurable GPO interrupt output. It serves as a secure, dual-interface memory bridge in smart labels, asset tags, and industrial IoT nodes requiring field-updatable configuration data.

For engineers reviewing the ST25DV04K-IER8S3 datasheet, ST25DV04K-IER8S3 pinout, ST25DV04K-IER8S3 application, or ST25DV04K-IER8S3 equivalent, key selection criteria include RF/I²C coexistence timing, 4-byte block vs. byte addressing alignment, GPO open-drain drive capability, energy harvesting analog output (V_EH), and multi-password memory protection architecture.

Technical Context

The device implements a dual-world memory controller: I²C accesses 512 bytes of user EEPROM as linear byte-addressed space, while RF operates on 128 blocks of 4 bytes each per ISO/IEC 15693. A dedicated 256-byte volatile mailbox enables atomic fast-transfer mode between interfaces without host intervention.

Its RF front end integrates 28.5 pF internal tuning capacitance and supports all ISO/IEC 15693 modulation/coding modes up to 53 Kbit/s read rate. The GPO pin-configured as open-drain in this variant-signals RF field change, memory write completion, or mailbox activity via programmable event masking.

Key Specifications

Parameter	Value and Actual Design Meaning
I²C Interface	Up to 1 MHz clock rate; enables direct microcontroller access to EEPROM without RF field dependency.
RF Interface	ISO/IEC 15693 compliant; supports all sub-carrier modes and data rates; certified NFC Forum Type 5 tag.
User Memory	4-Kbit (512 bytes) EEPROM; organized as 128 × 4-byte blocks for RF, byte-addressable for I²C.
Write Endurance	1 million cycles at 25 °C; 600 k at 85 °C; ensures long-term reliability in field-programmable applications.
Data Retention	40 years at 25 °C; critical for archival tagging and maintenance-log storage in unpowered environments.
Supply Voltage	1.8–5.5 V DC; accommodates wide-range industrial power rails and battery-backed systems.
Energy Harvesting	V_EH analog output delivers unregulated RF-derived voltage to power external sensors or logic when field strength permits.

Pinout & Package

ST25DV04K-IER8S3 is supplied in an 8-pin UFDFPN package (2.0 × 2.0 mm, 0.4 mm pitch) with ECOPACK2 RoHS compliance. Pin 1 is marked by a dot; exposed pad (EP) is present and must be left floating.

Pin/Terminal	Circuit Role	Design Meaning
AC0 / AC1	RF antenna interface	Differential inputs for external LC tank; no DC path allowed; internal 28.5 pF tuning capacitance reduces external component count.
V_CC	DC supply input	1.8–5.5 V wired power source; powers I²C interface and internal regulator; isolated from RF rectified supply.
V_SS	Ground reference	Common return for V_CC, V_DCG, and V_EH; defines analog zero for energy harvesting output.
SDA	I²C bidirectional data	Open-drain I/O; requires external pull-up; supports multi-master arbitration and byte-level EEPROM reads/writes.
SCL	I²C clock input	Input-only clock line; synchronizes I²C transactions; rise time governed by pull-up resistor and bus capacitance.
GPO	Configurable interrupt output	Open-drain output; signals RF events (field detect, write complete, mailbox ready); requires ≥4.7 kΩ external pull-up.
V_EH	Energy harvesting analog output	Unregulated analog voltage derived from RF field; high-Z when inactive; powers auxiliary circuitry without separate supply.

Key Features

Feature	Design Value
Fast Transfer Mode	256-byte volatile mailbox enables synchronous, low-latency data exchange between I²C host and RF reader without polling overhead.
Multi-Area Memory Protection	Four user-configurable memory areas, each independently protected by up to three 64-bit RF passwords and one 64-bit I²C password.
NFC Forum Type 5 Certification	Guarantees interoperability with certified readers and mobile devices; eliminates protocol compatibility validation effort.
Dynamic Register Access	Real-time status registers (e.g., RF activity, mailbox full flag) readable via both I²C and RF-enables responsive system-level event handling.
Low-Power RF Boot	RF interface achieves operational readiness within t_BootRF (typ. <1 ms); supports rapid wake-on-field scenarios in battery-constrained designs.

Applications

Smart Industrial Labels

Secure Asset Tracking Tags

Use Scenario: Permanent mounting on factory equipment to store calibration data, firmware version, and service history.

IC Role / Device Role / Timing Role: Dual-interface EEPROM bridge: I²C updates during maintenance; RF reads during audits without physical contact.

Use Value: Eliminates manual data entry errors and enables real-time traceability across production lines using existing NFC smartphones or fixed readers.

Use Scenario: Tamper-evident tagging of high-value tools, medical devices, or aerospace components with serialized identity and usage logs.

IC Role / Device Role / Timing Role: Secure memory node with password-protected zones: UID and AFI in read-only system config; usage counters in write-protected area.

Use Value: Prevents unauthorized reprogramming via RF; enforces chain-of-custody integrity through cryptographically enforced access control.

Energy-Harvesting Sensor Nodes

Configurable Smart Packaging

Use Scenario: Battery-free environmental sensor tag powered solely by NFC reader field during interrogation.

IC Role / Device Role / Timing Role: RF-powered memory + energy harvesting source: V_EH supplies local temperature/humidity sensor and signal conditioning circuitry.

Use Value: Enables zero-battery, maintenance-free sensing-data captured and stored locally, then retrieved on-demand via NFC.

Use Scenario: Consumer product packaging with dynamic content: batch number, expiry date, authenticity verification, and multilingual instructions.

IC Role / Device Role / Timing Role: Field-updatable memory hub: brand owner writes via I²C during packaging; end-user reads via smartphone RF.

Use Value: Supports just-in-time labeling, anti-counterfeiting via UID+password challenge, and regulatory compliance updates without repackaging.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ST25DV16K-IER8S3	16-Kbit EEPROM (2048 bytes), same pinout and feature set; higher memory density with identical timing and protection architecture.	Required where >512 bytes of field-updatable data is needed-e.g., multi-parameter calibration tables or extended audit logs.	Select when memory scalability is prioritized over cost-sensitive, minimal-data use cases.
NXH3670UK/V1	Integrated NFC controller + 2-Kbit EEPROM; lacks I²C interface; supports only RF access and proprietary energy harvesting management.	Targeted at ultra-low-cost, single-interface NFC tags without wired update capability or complex memory partitioning.	Choose only if I²C connectivity and multi-area password protection are unnecessary and BOM simplification is critical.

Compared with ST25DV16K-IER8S3, this part offers lower memory cost and footprint for simple 4-Kbit needs; versus NXH3670UK/V1, it provides essential I²C configurability and robust RF/I²C coexistence-critical for industrial-grade dual-access systems.

Availability

ST25DV04K-IER8S3 is available at Aetrix Electronics and suitable for smart industrial labels, secure asset tracking tags, energy-harvesting sensor nodes, and configurable smart packaging requiring stable component supply across automotive, industrial, and medical OEM programs.

Supply support for ST25DV04K-IER8S3 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, delivering intelligent power, sensing, and connectivity solutions for industrial, automotive, and consumer markets.

The ST25DV family targets secure, dual-interface NFC tagging-designed to unify wired configuration and contactless interaction in edge-connected devices where data integrity, field-updatability, and energy autonomy are mandatory.

FAQ

What is the function of the V_EH pin, and how is it used in practice?

The V_EH pin delivers an unregulated analog voltage harvested from the RF field, usable to power external low-current circuitry like sensors or comparators. It enters high-Z state when RF field strength is insufficient or energy harvesting is disabled. Designers must size external loads to match expected V_EH range (typically 1.2–3.3 V under nominal field conditions) and include local decoupling.

How does memory protection work across I²C and RF interfaces?

User memory is divided into up to four configurable areas, each protected independently: RF access uses three 64-bit passwords (per area), while I²C uses one 64-bit password. System configuration-including ENDA registers and UID-is secured by a separate 64-bit RF and I²C password. Passwords are stored in dedicated EEPROM blocks and validated before any protected access.

Can ST25DV04K-IER8S3 operate without a wired V_CC supply?

Yes-the device functions fully in contactless mode using only RF power. V_CC is optional and used only when I²C access is required. In RF-only operation, internal rectification powers the digital core, EEPROM, and GPO. The V_CC pin remains isolated and does not source current during RF operation.

What distinguishes the "IER8S3" suffix in the part number?

The "IER8S3" suffix denotes the 8-pin UFDFPN package (S3), open-drain GPO (E), industrial temperature range (I: –40 to +85 °C), and RoHS-compliant ECOPACK2 finish (R). It confirms the device uses the standard I²C address (50h–57h) and supports all base ST25DV04K features without LPD or VDCG pins-differentiating it from JF (CMOS GPO) or WLCSP variants.

ST25DV04K-IER8S3 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ST25D

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: RFID Transponder

Frequency:: 13.56MHz

Standards:: ISO 15693, NFC

Interface:: I2C

Voltage - Supply:: 1.8V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ST25DV04K-IER8S3 FAQ

1.How can I place an order for ST25DV04K-IER8S3 through Aetrix?

Please submit a Request for Quotation (RFQ) for ST25DV04K-IER8S3 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 ST25DV04K-IER8S3 reliable?

The price and inventory of ST25DV04K-IER8S3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25DV04K-IER8S3 is usually 5 days.

3.What payment methods are accepted for ST25DV04K-IER8S3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25DV04K-IER8S3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST25DV04K-IER8S3?

ST25DV04K-IER8S3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST25DV04K-IER8S3 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 ST25DV04K-IER8S3?

For technical support, including ST25DV04K-IER8S3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25DV04K-IER8S3 requirements.

6.How does Aetrix verify that ST25DV04K-IER8S3 is sourced from the original manufacturer or authorized distributors?

All ST25DV04K-IER8S3 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 ST25DV04K-IER8S3 meets industry standards.

7.What is the process for return or replacement of ST25DV04K-IER8S3?

All ST25DV04K-IER8S3 units undergo pre-shipment inspection (PSI). If there is an issue with ST25DV04K-IER8S3, 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 ST25DV04K-IER8S3 part is unused and in its original packaging.

Return procedure for ST25DV04K-IER8S3:

1.Submit a request within 90 days.

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

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