* Identification proximity card Transponder in Plastic Brick Package
* Compatible ATA5557, ATA5567.
* Includes Ferrite Coil and Capacitor for Tuned Circuit Antenna 
* Basic Component: Atmel  ®   ATA5577M1330C IDIC  ® 
* Contactless Power Supply 
* Contactless Downlink Data Transmission 
* Radio Frequency fRF  = 125kHz 
* 363-bit EEPROM Memory in Total: 11 Blocks ×  (32 Bits + 1 Lock-Bit)
* 7 × 32 Bits EEPROM User Memory Including 32-bit Password Memory 
* 2 × 32 Bits Unique ID 
* 1 × 32-bit Option Register in EEPROM to Set Up the Analog Front End: 
* Clock Detection Level 
* Gap Detection Level 
* Improved Downlink Timing 
* Clamp Voltage 
* Modulation Voltage 
* Soft Modulation Switching 
* Write Damping like the Atmel T5557/ATA5567 or with Resistor 
* Downlink Protocol 
* 1 x 32-bit Configuration Register in EEPROM to Set Up: 
* Data Rate: 
* RF/2 to RF/128, Binary Selectable or 
* Fixed Basic Mode Rates 
* Modulation/Coding: 
* ASK, FSK, PSK, Manchester, Bi-phase, NRZ 
* Other Options:
* Password Mode 
* Max Block Feature 
* Direct Access Mode 
* Sequence Terminator(s) 
* Block-wise Write Protection (Lock Bit) 
* Answer-On-Request (AOR) Mode 
* Inverse Data Output 
* Disable Test Mode Access 
* Fast Downlink (~6Kbits/s vs. ~3Kbits/s) 
* OTP Functionality 
* Init Delay (~67ms)

IC card Mifare card has the following advantages: 1) storage capacity is big. Magnetic card storage capacity is around 200 digital characters; IC card storage capacity depending on the type of small hundreds of characters, large millions of characters. 2) security good secrecy. IC card information can be read, modified, erased, but need a password. 3) the CPU card with data processing ability. When the data exchange with the card reader, but the data encryption, decryption, to ensure that the exchange of data accurate and reliable; While the magnetic card without this function. 4）Long service life.