STMicroelectronics M24SR16-YMN6T/2

Overview

M24SR16-YMN6T/2 from STMicroelectronics is a dynamic NFC/RFID tag IC with dual I²C and contactless interfaces, embedding 16-Kbit EEPROM memory compliant with NFC Forum Type 4 Tag and ISO/IEC 14443 Type A standards. It operates from 2.7 V to 5.5 V, supports 1 MHz I²C, delivers 106 Kbps RF data rate, and features 7-byte UID and 128-bit password protection - deployed in secure smart labels for industrial asset tracking.

For engineers reviewing the M24SR16-YMN6T/2 datasheet, M24SR16-YMN6T/2 pinout, M24SR16-YMN6T/2 application, or M24SR16-YMN6T/2 equivalent, key selection criteria include dual-interface session arbitration, NDEF file structure support, GPO configurable interrupt signaling, RF disable control, and EEPROM endurance at elevated temperature (600k write cycles @ 85 °C).

Technical Context

The device implements concurrent I²C slave and ISO/IEC 14443-A-compliant RF tag functionality, with hardware-level session management to prevent interface conflict. Its dual-mode operation enables host MCU-initiated memory access via I²C while simultaneously supporting NFC phone read/write of NDEF payloads without host intervention.

Memory is organized into CC (Capability Container), NDEF, and System files with configurable access rights enforced by 128-bit passwords and I²C-protected system fields. The GPO pin supports seven programmable states including RF busy, WIP, and INT signaling - enabling real-time status feedback to external logic without polling.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP8 (ECOPACK2®), footprint code DW per STMicroelectronics ordering information. Pinout validated per datasheet Section 2 (Signal Descriptions) and Table 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NT3H2111W0FHKH, M24SR16-YMN6T/2 offers host-controlled memory updates and extended thermal endurance; versus M24SR64-YMN6T/2, it trades capacity for lower unit cost and reduced power consumption during I²C bursts.

Availability

M24SR16-YMN6T/2 is available at Aetrix Electronics and suitable for industrial asset tagging, medical device ID systems, and consumer electronics pairing tokens requiring stable component supply, long-term EEPROM retention, and NFC Forum Type 4 compliance.

Supply support for M24SR16-YMN6T/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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and connectivity solutions for industrial, automotive, and consumer markets.

M24SR16-YMN6T/2 belongs to the ST25 NFC/RFID product line, engineered specifically for secure, dual-interface data exchange between embedded systems and NFC-enabled mobile devices - targeting applications where local MCU control and remote smartphone access must coexist reliably.

FAQ

What is the maximum I²C clock frequency supported by M24SR16-YMN6T/2?

The device supports I²C communication up to 1 MHz in fast-mode Plus, verified per datasheet Section 11 (I²C DC and AC parameters). This enables efficient bulk NDEF message updates without compromising MCU bus bandwidth, and is fully compatible with STM32, ESP32, and PIC microcontrollers operating at standard I²C speeds.

How does the RF Disable pin function during I²C operation?

The RF Disable pin is an active-low hardware control that physically gates the RF front-end circuitry. When asserted (logic low), it disables all RF communication regardless of session state - preventing interference during I²C programming or reducing EMI in noise-sensitive analog subsystems. It does not affect I²C functionality.

Can the GPO pin be used to signal successful NDEF write completion?

Yes - the GPO can be configured in "WIP Writing in Progress" mode (GPO field = 0xX2 or 0x2X) to drive low during EEPROM write cycles and return high upon completion. This provides deterministic hardware-level acknowledgment without polling status registers, reducing I²C transaction overhead and improving real-time responsiveness.

Is the 7-byte UID factory-programmed and permanently locked?

Yes - the 7-byte UID is laser-trimmed during wafer test and stored in ROM. It cannot be altered, erased, or reprogrammed after manufacture. This ensures cryptographic binding between physical hardware and stored credentials, meeting requirements for anti-cloning and device authentication in regulated industries.