https://estore.st.com/en/m24sr04-ydw6t-2-cpn.html
M24SR04-YDW6T/2 - eStore - STMicroelectronics
Buy M24SR04-YDW6T/2, Dynamic NFC/RFID tag IC with 4-Kbit EEPROM, NFC Forum Type 4 Tag and I2C interface, direct from STMicroelectronics. Prices, availability...
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