13.56MHz RFID/NFC Clear Keychain Fob - 1KB【限量】

※此為限量商品，下單前可先來電詢問小幫手確認庫存。

本商品為研發實驗用的模組，必須在二次加工後，才具備訊號傳輸功能。
並非直接插電後可直接使用之射頻模組，非屬電信管制射頻器材。

DESCRIPTION

This is a blank MiFare Classic keychain fob - often used for electronic locks or customer identification but also found in other systems where a small and easy to carry tag 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.

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.
These use the S50 chipset, which used to be the 'classic' NFC chipset. In ~2014, the NFC forum decided not to support this chipset anymore, so newer phones do not support the MiFare classic. This only matters if you're trying to use this tag with a phone/tablet.

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:

• 30mm x 25mm x 6mm / 1.2" x 1" x 0.2"
• Weight: 4.3g
• Works about 2" away from reader

Downloads:
NXP S50 datasheet