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MIFARE® Classic 1K (13.56MHz RFID/NFC) Charm - 1KB

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  • Adafruit
  • EXP-R15-581
  • 884
  • 5
  • CN
  • 85235200
  • 0.01
This is a blank MiFare Classic tag embedded in a phone charm. These tags are like those often... mehr

This is a blank MiFare Classic tag embedded in a phone charm. These tags are like those often used for train/bus passes but also found in other systems where a proximity card is desired. The tag contains a NXP S50 chip and an antenna, and is passively powered by the reader/writer when placed a couple inches away. Since this tag has a small antenna, it has to be closer to the antenna than, say, a large credit-card sized tag.

These can be read by almost any 13.56MHz RFID/NFC reader but make sure it can handle MiFare cards as there are a few other encoding standards (like FeLica) They are tested and work great with both our PN532 NFC/RFID breakout board and Adafruit NFC/RFID Shield for Arduino!

These chips can be written to & store up to 1 KB of data in writable EEPROM divided into banks, and can handle over 100,000 re-writes. You can use our PN532 NFC/RFID breakout board or Adafruit NFC/RFID Shield for Arduino to read and write data to the EEPROM inside the tag. There is also a permanent 4-byte ID burned into the chip that you can use to identify one tag from another - the ID number cannot be changed.


Technical Details:

  • S50 chip specification:
    • 1 KiloByte (8 KiloBit) non-volatile EEPROM storage
    • Built in encryption engine with 48-bit key
    • 4 Byte unique identifier burned into the chip
    • 13.56 MHz frequency
  • Tag specification:
    • 39.82mm x 24.85mm x 4mm
    • loop is 140mm/5.5"
    • 4.5 grams with loop, 4 grams without
    • Works about 1" away from RFID reader
  • NXP S50 datasheet
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