STMicroelectronics SRTAG2K-DMC6T/2

Overview

SRTAG2K-DMC6T/2 from STMicroelectronics is an NFC Forum Type 4 Tag IC with 2-kbit EEPROM, ISO/IEC 14443 Type A RF interface, 106 Kbps data rate, and integrated 25 pF tuning capacitance. It operates passively from 13.56 MHz RF fields and delivers a digital RF Session output for host system event detection in contactless smart label applications.

For engineers reviewing the SRTAG2K-DMC6T/2 datasheet, SRTAG2K-DMC6T/2 pinout, SRTAG2K-DMC6T/2 application, or SRTAG2K-DMC6T/2 equivalent, key selection criteria include NDEF support, 246-byte single-command read/write capability, 200-year data retention, 1 million endurance cycles, and open-drain RF Session interrupt signaling.

Technical Context

The device implements a fully compliant NFC Forum Type 4 Tag protocol stack over ISO/IEC 14443 Type A physical layer, supporting all mandatory and optional commands including NDEF message handling. Its analog front-end includes internal tuning capacitance (25 pF) and power management unit that extracts regulated supply from the RF field.

It operates exclusively in Tag mode-no external power required-and exposes only one digital signal: RF Session, an open-drain interrupt output activated when RF field is detected and stable, requiring external pull-up ≥4.7 kΩ.

Key Specifications

Pinout & Package

Package: UFDFPN8 (MC), 1.6 × 1.6 mm, 0.4 mm pitch, ECOPACK®2-compliant wafer-level chip-scale package with solder bumps.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NFC Type 4 Tag applications.

Compared with NT3H2111W0FHKH and ST25DV02K-IER, the SRTAG2K-DMC6T/2 uniquely combines 2-kbit memory, RF Session interrupt, and 25 pF internal tuning-reducing BOM count and simplifying PCB layout for pure NFC-only, event-driven systems.

Availability

SRTAG2K-DMC6T/2 is available at Aetrix Electronics and suitable for smart retail labels, industrial asset tags, secure access credentials, and NFC-enabled medical device ID requiring stable component supply and long-lifecycle support.

Supply support for SRTAG2K-DMC6T/2 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 designing and manufacturing microcontrollers, sensors, power ICs, and smart analog products for industrial, automotive, and consumer markets.

The SRTAG series targets cost-sensitive, battery-free NFC applications-delivering certified Type 4 Tag functionality in ultra-small wafer-level packages for integration into thin labels and disposable devices.

FAQ

What is the function of the RF Session pin?

The RF Session pin is an open-drain digital output that goes low when a valid 13.56 MHz RF field is detected and stabilized. It requires an external pull-up resistor ≥4.7 kΩ and serves as a hardware interrupt to wake up or synchronize the host microcontroller without software polling.

Does SRTAG2K-DMC6T/2 require an external tuning capacitor?

No. The device integrates 25 pF internal tuning capacitance, eliminating the need for external capacitors in the antenna matching network. This reduces component count and improves layout reliability in space-constrained NFC tag designs.

Can the EEPROM be written more than once per session?

Yes. The device supports up to 1 million erase-write cycles with verified 200-year data retention. Each write operation can program up to 246 bytes in a single command, enabling efficient bulk updates during field deployment or maintenance scans.

Is the 7-byte UID user-programmable?

No. The 7-byte UID is factory-programmed and permanently fixed. It serves as a globally unique identifier for device authentication and anti-cloning measures, and cannot be altered by end users or host systems.