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

STMicroelectronics ST25DV04KC-IE6S3

Name: ST25DV04KC-IE6S3
Brand: STMicroelectronics
SKU: ST25DV04KC-IE6S3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST25DV04KC-IE6S3

Manufacturer:: STMicroelectronics

Category:: RFID, RF Access, Monitoring ICs

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

Datasheet:: ST25DV04KC-IE6S3.pdf

Description:: DYNAMIC NFC/RFID TAG IC WITH 4-K

Quantity:: RFQ Add To RFQ list

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Inventory:4,100

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Product details

Overview

ST25DV04KC-IE6S3 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 energy harvesting output (V_E_H). It operates as a secure, field-powered memory node in smart labels, asset tags, and industrial IoT sensors where battery-free operation and host-controlled RF access are required.

For engineers reviewing the ST25DV04KC-IE6S3 datasheet, ST25DV04KC-IE6S3 pinout, ST25DV04KC-IE6S3 application, or ST25DV04KC-IE6S3 equivalent, key selection criteria include I²C/RF dual-interface coordination, 4-Kbit user memory partitioning, GPO event configuration (RF field change, write completion), and package-specific LPD/VDCG support for low-power or CMOS interrupt modes.

Technical Context

The device implements a dual-domain architecture: an I²C interface (up to 1 MHz) accesses EEPROM byte-wise for host-controlled configuration and data loading, while the ISO/IEC 15693 RF interface (Type 5 certified) accesses memory in 4-byte blocks at up to 53 Kbit/s, supporting all subcarrier modes and data rates. Internal tuning capacitance is fixed at 28.5 pF.

It integrates a 256-byte volatile mailbox buffer enabling fast transfer between interfaces, configurable GPO with open-drain (SO8/TSSOP8/UFDFPN8) or CMOS (WLCSP10/UFDFPN12) output, and energy harvesting analog output (V_E_H) delivering unregulated voltage under sufficient RF field strength.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory capacity	4-Kbit EEPROM = 512 bytes (I²C) / 128 blocks × 4 bytes (RF), factory-initialized to 00h
I²C interface	Two-wire serial interface, supports 1 MHz protocol, open-drain SDA/SCL, 1.8–5.5 V supply range
RF interface	ISO/IEC 15693 compliant, NFC Forum Type 5 certified, supports all modulations/coding/subcarriers/data rates
Fast transfer buffer	256-byte volatile mailbox enabling high-speed data exchange between I²C and RF domains
Write endurance	1 million cycles at 25 °C; 600k at 85 °C; 500k at 105 °C; 400k at 125 °C
Data retention	40 years at 25 °C, guaranteed over full temperature range
Energy harvesting	V_E_H analog output delivers unregulated voltage when RF field strength is sufficient; high-Z otherwise

Pinout & Package

ST25DV04KC-IE6S3 is supplied in SO8N (8-pin narrow SOIC) package with ECOPACK2 RoHS compliance. Pin functions are validated per DS13519 Rev 8 (pages 3–4). The package includes exposed pad (EP) on UFDFPN8 variants, but ST25DV04KC-IE6S3 uses SO8N - EP not present.

Pin	Circuit Role	Design Meaning
V_CC	Supply voltage input	DC power input (1.8–5.5 V); internal regulator isolates V_CC from RF rectified supply
V_SS	Ground reference	Common return for V_CC, V_DCG, and V_E_H; must be low-impedance
SCL	I²C clock input	Open-drain input requiring external pull-up; synchronizes I²C data transfers
SDA	I²C bidirectional data	Open-drain I/O requiring external pull-up; supports multi-master arbitration
GPO	Configurable interrupt output	Open-drain output; signals RF field change, memory write completion, or fast transfer events
V_E_H	Energy harvesting output	Analog voltage output (unregulated) usable to power external low-current circuitry during RF field presence
AC0 / AC1	RF antenna connection	Differential inputs for external LC tank; no DC/AC path other than tuned antenna coil allowed

Key Features

Feature	Design Value
Configurable memory protection	Four user memory areas, each independently protected by 64-bit RF/I²C passwords for read/write access control
Dynamic GPO event routing	GPO pin programmable to signal RF field detection, memory write completion, or fast transfer status - enables host wake-up or state monitoring
Fast transfer mode	256-byte volatile buffer allows atomic data handoff between I²C and RF interfaces without host intervention or timing constraints
NFC Forum Type 5 certification	Guarantees interoperability with standard NFC readers and mobile devices compliant with NFC Forum specifications
Low-power RF management	RF command interpreter can be disabled via I²C host, allowing precise control of RF activity and power consumption

Applications

Smart Industrial Labels

Secure Product Authentication

Use Scenario: Tamper-evident label on industrial equipment housing, updated via I²C during manufacturing and read via NFC smartphone during maintenance.

IC Role / Device Role / Timing Role: Dual-interface memory node storing calibration data, firmware version, and service history; RF interface enables field readout without physical connector.

Use Value: Eliminates need for wired service port; 40-year data retention ensures traceability across equipment lifetime; password-protected areas prevent unauthorized overwrite of critical parameters.

Use Scenario: Embedded in luxury goods packaging to verify authenticity using consumer NFC phones or handheld readers.

IC Role / Device Role / Timing Role: Secure, field-powered identity token storing cryptographic challenge-response data and unique UID; ISO/IEC 15693 compliance ensures reader compatibility.

Use Value: Prevents cloning via 64-bit RF password protection and factory-programmed UID; energy harvesting enables reliable response even with weak RF fields.

Asset Tracking Tags

IoT Sensor Configuration Hub

Use Scenario: Ruggedized tag attached to logistics pallets, programmed via I²C at warehouse dock and scanned via handheld RFID reader en route.

IC Role / Device Role / Timing Role: Non-volatile memory hub storing GPS coordinates, temperature log timestamps, and handling history; RF interface enables rapid batch reads.

Use Value: 53 Kbit/s fast read access reduces scan time per pallet; 128-block RF addressing simplifies firmware-level block management in reader middleware.

Use Scenario: Mounted on environmental sensor node to store calibration coefficients and network credentials, updated via MCU's I²C and verified via NFC during commissioning.

IC Role / Device Role / Timing Role: Configuration bridge between embedded host (I²C) and field technician (RF); fast transfer buffer synchronizes settings across interfaces atomically.

Use Value: Enables zero-touch setup: technician scans tag to confirm correct firmware and sensor ID before deployment; GPO pulses signal successful write completion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dynamic NFC tag applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ST25DV16KC-IE6T3	16-Kbit EEPROM (2048 bytes / 512 RF blocks); identical pinout, same SO8N package, same I²C/RF feature set	Supports larger configuration payloads or extended logging; requires no PCB redesign if footprint-compatible	Select when >4-Kbit user memory is needed without changing layout or firmware interface logic
NXH3670UK/N1E	NXP HF RFID tag IC with 2-Kbit EEPROM, ISO/IEC 15693, but no I²C interface; no GPO or energy harvesting	Read-only or field-programmable use cases only; lacks host-controlled configuration and power delivery capability	Choose only for pure NFC read/write applications where MCU-side memory update is unnecessary and energy harvesting is not required

Compared with ST25DV16KC-IE6T3, ST25DV04KC-IE6S3 offers lower memory density but identical dual-interface timing, security, and power features in the same SO8N package - ideal for cost-sensitive or space-constrained designs where 4-Kbit suffices. NXH3670UK/N1E omits I²C and GPO, limiting it to passive tag roles without host coordination.

Availability

ST25DV04KC-IE6S3 is available at Aetrix Electronics and suitable for smart labels, product authentication systems, industrial asset tracking, and IoT sensor configuration requiring stable component supply, long-term data integrity, and NFC interoperability.

Supply support for ST25DV04KC-IE6S3 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 connectivity solutions for industrial, automotive, and consumer markets.

ST25DVxxKC is part of ST's Dynamic NFC tag family, engineered to bridge wired and contactless worlds - enabling secure, battery-free memory expansion and configuration in industrial, medical, and smart packaging applications.

FAQ

What is the function of the V_E_H pin?

V_E_H is an analog energy harvesting output that delivers unregulated voltage when the RF field strength is sufficient to power the device. It is in high-impedance (high-Z) state when the RF field is absent or too weak. This pin can power low-current external components like comparators or reset supervisors, but requires external regulation if stable voltage is needed.

How does memory addressing differ between I²C and RF interfaces?

I²C accesses user memory byte-wise (0x0000–0x01FF for ST25DV04KC), supporting sequential reads without rollover. RF accesses memory in 4-byte blocks (0x0000–0x007F), with commands like Read Multiple Blocks operating on contiguous block ranges. Block 0x0000 maps to I²C bytes 0x0000–0x0003; block 0x007F maps to I²C bytes 0x01F8–0x01FF - confirmed in Table 4 of DS13519 Rev 8.

Can the GPO pin be used to wake up a host MCU?

Yes - GPO can be configured to output a pulse or level change on events including RF field detection, memory write completion, or fast transfer readiness. In SO8N packages, GPO is open-drain and requires an external pull-up resistor (>4.7 kΩ); the host MCU can monitor this pin as an interrupt source to wake from low-power mode upon tag interaction.

Is the UID programmable by the user?

No - the 64-bit UID is written by STMicroelectronics during manufacturing and is read-only. It complies with ISO/IEC 15693 and is used in anticollision inventory sequences. The UID cannot be altered in the field or during programming; however, AFI and DSFID registers in the system configuration area are user-configurable for application-level identification.

ST25DV04KC-IE6S3 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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 ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO

ST25DV04KC-IE6S3 FAQ

1.How can I place an order for ST25DV04KC-IE6S3 through Aetrix?

Please submit a Request for Quotation (RFQ) for ST25DV04KC-IE6S3 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 ST25DV04KC-IE6S3 reliable?

The price and inventory of ST25DV04KC-IE6S3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25DV04KC-IE6S3 is usually 5 days.

3.What payment methods are accepted for ST25DV04KC-IE6S3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25DV04KC-IE6S3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST25DV04KC-IE6S3?

ST25DV04KC-IE6S3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST25DV04KC-IE6S3 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 ST25DV04KC-IE6S3?

For technical support, including ST25DV04KC-IE6S3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25DV04KC-IE6S3 requirements.

6.How does Aetrix verify that ST25DV04KC-IE6S3 is sourced from the original manufacturer or authorized distributors?

All ST25DV04KC-IE6S3 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 ST25DV04KC-IE6S3 meets industry standards.

7.What is the process for return or replacement of ST25DV04KC-IE6S3?

All ST25DV04KC-IE6S3 units undergo pre-shipment inspection (PSI). If there is an issue with ST25DV04KC-IE6S3, 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 ST25DV04KC-IE6S3 part is unused and in its original packaging.

Return procedure for ST25DV04KC-IE6S3:

1.Submit a request within 90 days.

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

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