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

STMicroelectronics ST25DV64KC-IE6T3

Name: ST25DV64KC-IE6T3
Brand: STMicroelectronics
SKU: ST25DV64KC-IE6T3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST25DV64KC-IE6T3

Manufacturer:: STMicroelectronics

Category:: RFID, RF Access, Monitoring ICs

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

Datasheet:: ST25DV64KC-IE6T3.pdf

Description:: MEMORY

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ST25DV64KC-IE6T3 from STMicroelectronics is a dynamic NFC/RFID tag IC with dual I²C and ISO/IEC 15693 contactless interfaces, 64 Kbit EEPROM, 256-byte fast-transfer buffer, and energy harvesting output (V_EH). It operates from 1.8–5.5 V, supports 1 MHz I²C, and delivers up to 53 Kbit/s RF read speed - deployed in smart labels, industrial asset tags, and NFC-enabled sensor nodes requiring secure, battery-free memory access.

For engineers reviewing the ST25DV64KC-IE6T3 datasheet, ST25DV64KC-IE6T3 pinout, ST25DV64KC-IE6T3 application, or ST25DV64KC-IE6T3 equivalent, key selection criteria include RF/I²C dual-interface coordination, configurable password-protected memory areas, GPO event signaling (field change, write completion), and package-specific LPD/VDCG support for low-power operation.

Technical Context

This IC implements a hybrid architecture: the I²C interface accesses memory byte-wise (8192 bytes), while the RF interface accesses it block-wise (2048 × 4-byte blocks), both referencing the same physical EEPROM array. The 256-byte volatile mailbox enables deterministic fast transfer between interfaces without host intervention.

It integrates an analog front-end with 28.5 pF internal tuning capacitance, supports all ISO/IEC 15693 modulation/coding modes (1.66/26.48/52.97 kbit/s), and features dual-password protection - three 64-bit RF passwords (per memory area) plus one 64-bit I²C password - enforced at register level during access attempts.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory capacity	64 Kbit EEPROM = 8192 bytes (I²C) / 2048 blocks × 4 bytes (RF); enables firmware metadata storage or multi-sensor calibration tables.
I²C interface	1 MHz two-wire protocol with open-drain SDA/SCL; supports multi-byte writes up to 256 bytes per transaction for efficient configuration loading.
RF interface	ISO/IEC 15693 & NFC Forum Type 5 certified; full subcarrier/modulation/data rate compatibility ensures interoperability with standard NFC readers.
Write endurance	1 million cycles at 25 °C; de-rates to 400k at 125 °C - validated for high-temp industrial tagging applications with frequent reprogramming.
Data retention	40 years at 85 °C; guarantees long-term integrity of calibration data or device identity stored in EEPROM without refresh.
Energy harvesting	V_EH analog output delivers unregulated RF-derived voltage to power external sensors or logic - eliminates need for local battery in passive nodes.
GPO functionality	Configurable interrupt pin signals RF field presence, memory write completion, or fast-transfer events; open-drain (SO8/TSSOP8/UFDFPN8) or CMOS (WLCSP10/UFDFPN12).

Pinout & Package

ST25DV64KC-IE6T3 is supplied in UFDFPN8 package (8-pin, 2 mm × 2 mm, 0.5 mm pitch, ECOPACK2 RoHS-compliant), featuring open-drain GPO and no LPD/VDCG pins - optimized for compact NFC tag designs where low standby current is managed externally.

Pin/Terminal	Circuit Role	Design Meaning
V_EH	Energy harvesting analog output	Delivers unregulated RF-derived voltage to power external circuitry; high-Z when RF field is absent or insufficient.
AC0 / AC1	RF antenna coil connections	Differential inputs for external LC tank; require precise impedance matching to 28.5 pF internal capacitance for optimal 13.56 MHz coupling.
V_SS	Ground reference	Common return for V_CC, V_EH, and RF analog front-end; must be low-impedance to minimize noise on RF and I²C paths.
V_CC	DC supply input	1.8–5.5 V wired power source; powers I²C interface and internal logic; internal regulator isolates V_CC from RF rectified supply.
GPO	General-purpose open-drain output	Signals RF field detection, memory write completion, or fast-transfer status; requires external pull-up ≥4.7 kΩ to function.
SCL	I²C serial clock input	Master-generated clock; open-drain structure mandates external pull-up; synchronizes all I²C data transfers.
SDA	I²C serial data bidirectional	Open-drain bidirectional line; supports multi-master arbitration and clock stretching during EEPROM write cycles.
V_CC (pin 8)	Supply voltage (redundant connection)	Second V_CC pad in UFDFPN8 improves thermal dissipation and reduces DC resistance in high-volume PCB layouts.

Key Features

Feature	Design Value
Fast transfer mode	256-byte volatile buffer enables zero-latency handoff of data between I²C host and RF reader - critical for real-time sensor log synchronization.
Four configurable memory areas	Each area independently protected by RF/I²C passwords; allows segmented access control - e.g., public UID + private calibration + encrypted firmware + read-only config.
NFC Forum Type 5 certification	Guarantees interoperability with Android/iOS NFC stacks and enterprise-grade readers without proprietary driver development.
Temperature range	–40 °C to 105 °C (RF interface limited to 105 °C); qualified for under-hood automotive tagging and factory-floor industrial environments.
Low-power RF management	I²C can disable RF command interpreter or force immediate RF switch-off - prevents unintended reads during host firmware updates.

Applications

Smart Industrial Labels

NFC-Enabled Sensor Nodes

Use Scenario: Asset tracking labels on motors, valves, or pumps in manufacturing plants, scanned via handheld NFC readers for maintenance history and calibration data.

IC Role / Device Role / Timing Role: Dual-interface EEPROM storing timestamped service logs (I²C) and enabling instant readout via NFC (RF) without wiring or battery.

Use Value: Eliminates manual data entry errors and enables offline-accessible records; 40-year data retention ensures traceability over equipment lifetime.

Use Scenario: Battery-free environmental sensor node powered by RF energy harvesting, measuring temperature/humidity and logging to local EEPROM before NFC upload.

IC Role / Device Role / Timing Role: Energy harvesting source (V_EH), non-volatile memory (64 Kbit), and RF/I²C bridge - acts as autonomous data concentrator.

Use Value: Removes battery replacement burden; fast transfer mode allows bulk sensor logs to be moved to host MCU before RF session timeout.

Secure Product Authentication Tags

Medical Device Calibration Anchors

Use Scenario: Tamper-evident NFC tags embedded in pharmaceutical packaging or medical consumables, storing cryptographic keys and batch IDs verified at point-of-care.

IC Role / Device Role / Timing Role: Secure memory with three independent 64-bit RF passwords per memory area - enforces hierarchical access (public UID, OEM key, end-user config).

Use Value: Prevents cloning via password-locked write protection; ISO/IEC 15693 compliance ensures scanner compatibility across global healthcare systems.

Use Scenario: Calibration anchor attached to ultrasound probes or infusion pumps, storing device-specific correction coefficients updated via I²C during service and verified via NFC pre-use.

IC Role / Device Role / Timing Role: High-reliability EEPROM with 1M write cycles at 25 °C and 400k at 125 °C - withstands repeated recalibration in sterilization environments.

Use Value: Ensures measurement accuracy traceability; GPO pulse signal confirms successful write completion to prevent undetected calibration failures.

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), identical pinout and feature set except reduced memory size and lower write endurance (600k @ 85 °C).	Suitable for simpler tagging needs like basic UID + firmware version; insufficient for multi-sensor log storage or large calibration datasets.	Select when cost sensitivity outweighs memory scalability; retains full software compatibility and footprint interchangeability.
NXP NT3H2211W0FHKH	1 Kbyte EEPROM, NFC Forum Type 2 compliant (not ISO/IEC 15693), no I²C interface, no energy harvesting, no fast transfer buffer.	Limited to simple read/write NFC use cases (e.g., marketing tags); lacks dual-interface coordination and secure multi-area protection.	Choose only for ultra-low-cost, single-interface consumer applications where RF-only access and minimal memory suffice.

Compared with ST25DV16KC-IE6T3, the ST25DV64KC-IE6T3 provides 4× more EEPROM and extended high-temp endurance - essential for industrial logging. Versus NT3H2211, it adds I²C control, energy harvesting, and ISO/IEC 15693 robustness - making it viable for mission-critical embedded NFC systems.

Availability

ST25DV64KC-IE6T3 is available at Aetrix Electronics and suitable for smart industrial labels, NFC-enabled sensor nodes, secure product authentication tags, and medical device calibration anchors requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ST25DV64KC-IE6T3 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, sensors, and secure connectivity solutions for industrial, automotive, and IoT markets.

The ST25DVxxKC product line delivers dynamic NFC/RFID tag ICs designed specifically for battery-free, dual-interface memory applications - bridging wired configuration and wireless verification in edge-connected systems.

FAQ

What is the maximum RF data rate supported by ST25DV64KC-IE6T3?

The device supports ISO/IEC 15693-defined data rates up to 52.97 kbit/s in high-speed mode, with custom fast read achieving 53 Kbit/s. This is measured under standard 13.56 MHz carrier conditions with compliant reader field strength and antenna tuning - no firmware or host-side acceleration required.

Can the GPO pin wake up an external microcontroller?

Yes - the GPO pin can be configured to output a positive pulse upon RF field detection or memory write completion. When connected to a microcontroller's external interrupt pin with appropriate pull-up, this pulse reliably triggers wake-up from deep sleep, enabling ultra-low-power sensor tag architectures.

How does the 256-byte fast transfer buffer operate between I²C and RF interfaces?

The buffer functions as a shared mailbox: I²C writes data into it, then triggers an RF-side "fast read" command; conversely, RF writes populate it for subsequent I²C read. No host CPU involvement is needed - the hardware automates handoff, reducing latency to <100 µs for 256-byte transfers.

Is energy harvesting output (V_EH) regulated or current-limited?

No - V_EH is an unregulated analog output derived directly from the RF rectifier. Its voltage scales with field strength and antenna coupling efficiency, and it sources no defined current limit. External regulation (e.g., LDO) and current limiting must be implemented in the load circuit to prevent damage.

ST25DV64KC-IE6T3 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Bulk

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 (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

ST25DV64KC-IE6T3 FAQ

1.How can I place an order for ST25DV64KC-IE6T3 through Aetrix?

Please submit a Request for Quotation (RFQ) for ST25DV64KC-IE6T3 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-IE6T3 reliable?

The price and inventory of ST25DV64KC-IE6T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25DV64KC-IE6T3 is usually 5 days.

3.What payment methods are accepted for ST25DV64KC-IE6T3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25DV64KC-IE6T3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST25DV64KC-IE6T3?

ST25DV64KC-IE6T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST25DV64KC-IE6T3 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-IE6T3?

For technical support, including ST25DV64KC-IE6T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25DV64KC-IE6T3 requirements.

6.How does Aetrix verify that ST25DV64KC-IE6T3 is sourced from the original manufacturer or authorized distributors?

All ST25DV64KC-IE6T3 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-IE6T3 meets industry standards.

7.What is the process for return or replacement of ST25DV64KC-IE6T3?

All ST25DV64KC-IE6T3 units undergo pre-shipment inspection (PSI). If there is an issue with ST25DV64KC-IE6T3, 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-IE6T3 part is unused and in its original packaging.

Return procedure for ST25DV64KC-IE6T3:

1.Submit a request within 90 days.

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

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