STMicroelectronics ST25DV16K-JFR6D3

Overview

ST25DV16K-JFR6D3 from STMicroelectronics is a dynamic NFC/RFID tag IC with dual I²C and ISO/IEC 15693 contactless interfaces, 16 Kbit EEPROM (2048 bytes via I²C / 512 blocks × 4 bytes via RF), 256-byte fast-transfer buffer, 1.8–5.5 V supply, and NFC Forum Type 5 certification. It enables secure, bidirectional data exchange between wired microcontrollers and NFC-enabled smartphones or readers in industrial asset tagging and smart packaging.

For engineers reviewing the ST25DV16K-JFR6D3 datasheet, ST25DV16K-JFR6D3 pinout, ST25DV16K-JFR6D3 application, or ST25DV16K-JFR6D3 equivalent, key selection criteria include RF/I²C coexistence timing, GPO interrupt configuration (CMOS output), energy harvesting analog output (V_EH), and four-zone memory protection using 64-bit RF/I²C passwords.

Technical Context

The device implements a dual-domain architecture: an I²C slave interface (up to 1 MHz) for host MCU control and a full ISO/IEC 15693 RF front-end supporting all sub-carrier modes, data rates, and modulation schemes. Its internal 28.5 pF tuning capacitance eliminates external matching components for standard antenna designs.

Fast Transfer Mode uses a dedicated 256-byte volatile buffer to enable high-speed data handoff between RF and I²C domains-e.g., bulk sensor logs written via I²C can be read in <53 Kbit/s bursts over NFC. The GPO pin supports configurable CMOS-level interrupts on RF field change, memory write completion, or mailbox activity, enabled only in JF-series packages with VDCG supply.

Key Specifications

Pinout & Package

ST25DV16K-JFR6D3 is supplied in a 12-pin UFDFPN package (3.0 × 3.0 mm, 0.5 mm pitch) with exposed pad, RoHS-compliant ECOPACK2. This variant features CMOS GPO output and includes LPD (low-power down) and VDCG (GPO driver supply) pins - enabling sub-1 µA standby current and active GPO signaling without loading the main V_CC rail.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ST25DV04K-JFR6D3, this part doubles memory capacity while retaining identical interrupt behavior, energy harvesting capability, and RF performance - making it optimal for upgradable industrial tags. Versus ST25DV64K-JFR6D3, it offers 4× lower unit cost with sufficient capacity for most embedded configuration and authentication tasks.

Availability

ST25DV16K-JFR6D3 is available at Aetrix Electronics and suitable for industrial asset tagging, smart packaging authentication, IoT sensor node configuration, and medical device calibration storage requiring stable component supply across multi-year production cycles.

Supply support for ST25DV16K-JFR6D3 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.

The ST25DVxxx series targets secure, battery-free identification and data exchange in resource-constrained environments - combining NFC interoperability, EEPROM persistence, and MCU-friendly I²C control in a single chip.

FAQ

What is the function of the V_DCG pin on ST25DV16K-JFR6D3?

V_DCG supplies power exclusively to the GPO driver circuit. When connected to 1.8–5.5 V, it enables CMOS-level output on the GPO pin for precise interrupt signaling (e.g., RF field detection or mailbox readiness). If left floating, GPO remains inactive regardless of internal event status - this pin is mandatory for functional GPO operation in JF-series variants.

How does Fast Transfer Mode improve system responsiveness?

Fast Transfer Mode uses a dedicated 256-byte volatile buffer to decouple I²C and RF data flows. A host MCU writes configuration or sensor data via I²C, then triggers RF-side access - allowing NFC readers to retrieve the full dataset in one optimized burst (up to 53 Kbit/s), avoiding sequential block reads. This cuts typical NFC session time from ~500 ms to <100 ms for 1 KB payloads.

Can ST25DV16K-JFR6D3 operate without a wired power supply?

Yes - the device operates in pure contactless mode using energy harvested from the 13.56 MHz RF field. In this mode, V_CC is unconnected, and internal circuitry is powered solely by the rectified RF waveform. All RF functions (memory read/write, UID transmission, GPO assertion) remain fully operational, though I²C interface is disabled until V_CC is applied.

What memory protection mechanisms are implemented?

The device provides layered security: user memory is divided into four configurable zones, each protected by independent 64-bit RF and I²C passwords. System configuration registers (including UID and AFI/DSFID) are secured by a separate 64-bit configuration password. Passwords are stored in dedicated EEPROM blocks and enforced at protocol level - unauthorized access attempts return error codes or NACK without exposing memory content.