M24SR02-YMN6T/2

The M24SR02-YMN6T/2 is STMicroelectronics’ 2-kbit dual‑interface dynamic NFC/RFID tag with an I2C host interface. It lets a microcontroller access memory via I2C and also lets an NFC reader access the same memory over the ISO/IEC 15693 (13.56 MHz) RF interface, enabling flexible contactless and wired communication.
Key points:
- Interfaces: I2C and NFC (ISO 15693) for bidirectional data exchange.
- Memory: 2 kbits (256 bytes) of EEPROM, organized for easy I2C and RF access.
- Security: supports memory protection and authorization features (passwords/lock options) to guard sensitive areas.
- Power: passive RF-powered by the NFC field when used in NFC mode; can also be driven via I2C supply in I2C mode.
- Package: compact 8-pin device (variant YMN6T/2 indicates packaging and temperature/production options).
- Applications: smart labels and posters, asset tracking, product authentication, access-control cards, and other NFC/I2C-enabled embeds.
For exact memory map, timing, and security capabilities, refer to the M24SR02 datasheet.

M24SR02-YMN6T/2 features (concise):
- Dual-interface dynamic NFC tag with I2C host interface (13.56 MHz NFC and I2C).
- Memory: 2 Kbit EEPROM (256 bytes) with NFC/I2C-accessible organization; NDEF-friendly area.
- Battery-free operation powered by the NFC field; energy harvesting from RF.
- NFC Forum-compatible tag emulation for easy smartphone/app tagging.
- Secure memory with password protection and access control (per area/byte-level options).
- I2C speed up to 400 kbit/s; fast RF data transfer under NFC.
- Low power/energy-efficient design; suitable for wearables and asset tags.
- Wide operating voltage: 1.8–5.5 V; extended temperature range (-25°C to +85°C).
- 8-pin package (YMN6T) with RoHS-compliant packaging.
Note: exact NFC protocol support (e.g., ISO/IEC 15693/14443 Type A) and memory map are defined in the datasheet.

The M24SR02-YMN6T/2 is supplied in a 6‑lead UDFN (ultra‑thin DFN) package — a compact 2.0 × 3.0 mm micro‑package.

The M24SR02‑YMN6T/2 is delivered in a 6‑pin package. Its pins provide:
- VCC: supply voltage
- GND: ground
- SCL: I²C clock
- SDA: I²C data (also used for TWI/serial comms)
- RF1 and RF2: contactless antenna connections for NFC/RFID (ISO/IEC 14443‑A)
For exact pin numbering, pad assignment and electrical characteristics, see the STMicroelectronics datasheet for the M24SR02‑YMN6T package.

- Manufacturer: STMicroelectronics (ST)
- Company type: A multinational semiconductor company that designs and manufactures integrated circuits and electronic components (memory, microcontrollers, sensors, MEMS, RFID/NFC, etc.).

Application areas:
- Dynamic NFC tags for smartphones (NDEF content, marketing, smart posters)
- Product authentication and anti-counterfeiting
- Asset tracking and inventory management
- Access control, loyalty programs, and event tickets
- Packaging and labeling with updatable data
- Device configuration and firmware updates via NFC
(Uses I2C interface to host, with NFC for mobile interaction.)