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

STMicroelectronics ST25DV64KC-IE6S3

Name: ST25DV64KC-IE6S3
Brand: STMicroelectronics
SKU: ST25DV64KC-IE6S3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST25DV64KC-IE6S3

Manufacturer:: STMicroelectronics

Category:: RFID, RF Access, Monitoring ICs

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

Datasheet:: ST25DV64KC-IE6S3.pdf

Description:: DYNAMIC NFC/RFID TAG IC WITH 64-

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ST25DV64KC-IE6S3 from STMicroelectronics is a dynamic NFC/RFID tag IC with 64-Kbit EEPROM, dual I²C and ISO/IEC 15693 contactless interfaces, 1.8–5.5 V supply, 256-byte fast-transfer buffer, and NFC Forum Type 5 certification. It serves as a secure, energy-harvesting-enabled memory bridge between wired microcontrollers and NFC readers in smart labels and industrial asset tags.

For engineers reviewing the ST25DV64KC-IE6S3 datasheet, ST25DV64KC-IE6S3 pinout, ST25DV64KC-IE6S3 application, or ST25DV64KC-IE6S3 equivalent, key selection criteria include RF write endurance at 105 °C (500k cycles), configurable four-area memory protection via six 64-bit passwords, GPO interrupt event mapping, and package-specific LPD/VDCG support for low-power operation.

Technical Context

The device implements a dual-domain architecture: the I²C interface accesses memory byte-wise (8192 bytes) while the RF interface accesses it block-wise (2048 blocks × 4 bytes), synchronized via a 256-byte volatile mailbox buffer. Its analog front end includes integrated 28.5 pF tuning capacitance and supports all ISO/IEC 15693 modulation modes (1.66/26.48 kbit/s base rate, up to 53 kbit/s fast read).

Memory protection uses three independent 64-bit RF passwords (per user area) plus one 64-bit RF configuration password and one 64-bit I²C password; system registers store UID, AFI, DSFID, and revision data. The GPO pin supports configurable open-drain (SO8/TSSOP8/UFDFPN8) or CMOS (WLCSP10/UFDFPN12) output with event masking for RF field change, memory write completion, and fast transfer triggers.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory capacity	64 Kbit EEPROM = 8192 bytes (I²C) / 2048 blocks × 4 bytes (RF); enables large firmware metadata or calibration log storage
I²C interface speed	Up to 1 MHz protocol support; allows high-speed host MCU updates without bus contention in embedded systems
RF interface standard	ISO/IEC 15693 & NFC Forum Type 5 certified; ensures interoperability with commercial NFC readers and smartphones
Write endurance	500k cycles at 105 °C; supports long-life deployment in automotive under-hood or industrial control cabinet environments
Data retention	40 years at 85 °C; guarantees persistent storage of device identity, calibration, or compliance records over product lifetime
Energy harvesting output	V_E_H analog pin delivers unregulated RF-derived voltage; powers external sensors or low-threshold comparators without auxiliary supply
Operating temperature	–40 °C to 105 °C (UDFPN8/UFDFPN12); validated for extended thermal range in sealed enclosures and outdoor IoT nodes

Pinout & Package

ST25DV64KC-IE6S3 is supplied in UFDFPN8 package (ECOPACK2, RoHS-compliant), featuring 8-pin exposed-pad layout with open-drain GPO output and no LPD/VDCG pins - optimized for cost-sensitive, space-constrained NFC tag designs requiring minimal external components.

Pin/Terminal	Circuit Role	Design Meaning
V_E_H	Energy harvesting analog output	Delivers unregulated RF-derived voltage; must be decoupled externally if powering downstream circuitry
AC0 / AC1	RF antenna coil terminals	Differential inputs for external LC tank; require impedance matching to achieve 28.5 pF internal tuning target
V_SS	Ground reference	Common return for V_CC, V_E_H, and RF analog front end; must be low-impedance connection to minimize noise coupling
V_CC	DC supply input	1.8–5.5 V wired power source; powers I²C logic and internal regulator; isolates RF rectified supply from V_CC pin
GPO	Configurable interrupt output	Open-drain output; requires external pull-up (>4.7 kΩ); signals RF field presence, memory write completion, or mailbox activity
SCL	I²C serial clock input	Master-generated clock; open-drain compatible; timing must meet t_LOW/t_HIGH min/max per I²C spec at 1 MHz
SDA	I²C bidirectional data line	Open-drain I/O; shares bus with other devices; pull-up required; supports repeated START and STOP conditions
EP	Exposed pad	Thermal and electrical ground; must be left floating per ST recommendation to avoid parasitic coupling or latch-up

Key Features

Feature	Design Value
Fast transfer mode buffer	256-byte volatile mailbox enables atomic data exchange between I²C host and RF reader without intermediate EEPROM writes
Four-area memory protection	User memory partitioned into four independently password-protected zones (read/write configurable per zone) using six 64-bit keys
NFC Forum Type 5 certification	Guarantees interoperability with Android NFC stacks and enterprise-grade readers without proprietary driver development
Custom fast read access	RF read throughput up to 53 kbit/s via extended commands; reduces tag interrogation time in high-throughput logistics scanning
Low-power RF management	I²C host can disable RF command interpreter or force immediate RF field shutdown - critical for EMI-sensitive medical or test equipment

Applications

Smart Industrial Labels

Secure Firmware Update Tags

Use Scenario: Asset tracking label on CNC machine tooling, storing calibration offsets, maintenance history, and operator ID.

IC Role / Device Role / Timing Role: Dual-interface EEPROM bridge: I²C updates data during maintenance; RF reads data during automated tool-change cycles.

Use Value: Eliminates manual data entry errors and enables traceable, tamper-evident calibration logs with password-protected write access per maintenance tier.

Use Scenario: NFC-enabled firmware update tag attached to edge gateway, holding signed firmware fragments and version metadata.

IC Role / Device Role / Timing Role: Secure nonvolatile storage for cryptographic signatures and firmware chunks; GPO pulses notify host MCU when new update is ready.

Use Value: Enables zero-touch, authenticated firmware updates via smartphone scan - no physical connector or USB interface required.

Medical Device ID Tags

Energy-Harvesting Sensor Nodes

Use Scenario: Sterilizable NFC tag on reusable surgical instrument, storing UDI, sterilization count, and last-use timestamp.

IC Role / Device Role / Timing Role: Tamper-resistant memory with UID and AFI/DSFID registers compliant with FDA UDI requirements; RF-only read during inventory.

Use Value: Meets 21 CFR Part 820 traceability mandates with 40-year data retention and password-locked write access preventing unauthorized edits.

Use Scenario: Battery-free environmental sensor node powered solely by NFC reader field, logging temperature/humidity to EEPROM before RF readout.

IC Role / Device Role / Timing Role: Energy harvesting source (V_E_H) powers external ADC and comparator; RF interface transfers logged data on demand.

Use Value: Enables maintenance-free, wire-free sensing in inaccessible locations - no battery replacement or wiring infrastructure needed.

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), same pinout and feature set; lower memory density, identical RF/I²C timing and protection architecture	Lower-cost option where firmware metadata or calibration logs fit within 2 KB; same footprint enables design reuse	Select when total stored data volume remains ≤2 KB and BOM cost optimization is prioritized over future scalability
NXH3670UK/N1E	NXP HF RFID tag with 2-Kbit EEPROM, no I²C interface, no fast transfer buffer, no energy harvesting output	Read-only or limited-write NFC tagging only; lacks wired host interface for local updates or secure provisioning	Choose only for pure passive NFC use cases requiring no MCU-side control or energy harvesting capability

Compared with ST25DV16KC-IE6T3, the ST25DV64KC-IE6S3 provides 4× more EEPROM for complex metadata and firmware staging; versus NXH3670UK/N1E, it adds full I²C host control, 256-byte mailbox, and V_E_H power delivery - essential for intelligent, self-powered edge nodes.

Availability

ST25DV64KC-IE6S3 is available at Aetrix Electronics and suitable for smart industrial labels, secure firmware update tags, medical device ID tags, and energy-harvesting sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for ST25DV64KC-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.

This device belongs to the ST25 Dynamic NFC tag product line, engineered specifically for secure, dual-interface data exchange between wired hosts and contactless readers in traceable, maintenance-critical, and energy-constrained applications.

FAQ

What is the maximum RF read data rate supported by ST25DV64KC-IE6S3?

The device supports custom fast read access up to 53 kbit/s using extended RF commands, significantly exceeding the base ISO/IEC 15693 rate of 26.48 kbit/s. This higher throughput is achieved through optimized command sequencing and internal buffer handling, reducing tag interrogation time in high-volume scanning environments such as logistics hubs or automated manufacturing lines.

How does memory protection work across I²C and RF interfaces?

Memory protection uses separate password mechanisms: three 64-bit RF passwords guard read/write access to four user memory areas, while one 64-bit I²C password protects byte-level writes via the wired interface. The system configuration area is secured by an additional 64-bit RF configuration password. All passwords are stored in dedicated EEPROM blocks and enforced independently per interface - no cross-interface privilege escalation is possible.

Can ST25DV64KC-IE6S3 operate without a DC supply (V_CC)?

Yes - the device operates fully in RF-only mode when V_CC is unconnected. The internal RF rectifier powers all circuitry including the EEPROM controller and GPO output. In this mode, I²C communication is disabled, but full RF functionality (read/write, password protection, GPO events) remains active. V_E_H output is also available to power external circuitry during RF field presence.

What package-specific features are enabled in the UFDFPN8 variant?

The UFDFPN8 package implements open-drain GPO output and omits LPD and VDCG pins - simplifying PCB layout and reducing BOM count for cost-sensitive designs. It retains full I²C (1 MHz), RF (ISO/IEC 15693), and energy harvesting (V_E_H) functionality. The exposed pad (EP) must remain floating per ST's design guidance to prevent signal integrity issues or unintended grounding paths.

ST25DV64KC-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

ST25DV64KC-IE6S3 FAQ

1.How can I place an order for ST25DV64KC-IE6S3 through Aetrix?

Please submit a Request for Quotation (RFQ) for ST25DV64KC-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 ST25DV64KC-IE6S3 reliable?

The price and inventory of ST25DV64KC-IE6S3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25DV64KC-IE6S3 is usually 5 days.

3.What payment methods are accepted for ST25DV64KC-IE6S3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25DV64KC-IE6S3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST25DV64KC-IE6S3?

ST25DV64KC-IE6S3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST25DV64KC-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 ST25DV64KC-IE6S3?

For technical support, including ST25DV64KC-IE6S3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25DV64KC-IE6S3 requirements.

6.How does Aetrix verify that ST25DV64KC-IE6S3 is sourced from the original manufacturer or authorized distributors?

All ST25DV64KC-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 ST25DV64KC-IE6S3 meets industry standards.

7.What is the process for return or replacement of ST25DV64KC-IE6S3?

All ST25DV64KC-IE6S3 units undergo pre-shipment inspection (PSI). If there is an issue with ST25DV64KC-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 ST25DV64KC-IE6S3 part is unused and in its original packaging.

Return procedure for ST25DV64KC-IE6S3:

1.Submit a request within 90 days.

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

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