About Atmel T5557 IC :

• IC manufacturer : Atmel
• Wafer die : Atmel T5577
• Function : Read / Write protect by password
• Memory : 363-bit EEPROM (32bits each+1 lock bit)
• Frequency : 125KHz
• RF protocol : N/A
• Modulation : FSK, PSK, Manchester, Biphase, NRZ 

 
Key Feature of T5577 Card :  

• Dimensions : CR80 85.60 x 53.98mm
• Thickness : 0.84mm
• Material : PVC, PET
• Card Surface : Matte / gloss finish
• Housing : Lamination
• Working Frequency : 125KHz 
• Reading Distance : 3 - 10 cm typically
• Data storage time : 10 years 

Printing options  

• Full color offset printing
• Silk-screen printing
• Silver/Gold silk-screen printing background
• Personalization
   

Options for standart card  

• Magnetic stripe: 300oe, 2750oe, 4000oe
• Numbering
• Barcode printing
• Signature panel
• Embossing
• Encoding (according agreement)

• Access Control
• Hotel key Lock
• Time Tttendance System