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Popular RFID IC card chips Mifare one S50/S70 features

Time:2012-06-12Hits:

Now the Mifare one RFID IC chips of philips company is popular with its features it can be written-read function. Mifare one and EM 4100/4102(RFID ID Card ,just can be read,Common RFID ID card chips EM4100/4102 specification) hold most of the RFID card chips market. let us study the work principle and main model and indicators.

1.The chip electrical part consists of antenna and ASIC:
Antenna: The antenna of the card is only a few winding coil, which is suitable for packaging into the IS0 card.
ASICs: ASIC card contains a high-speed (106KB baud rate) of the RF interface, a control unit and an 8K-bit EEPROM.

2. How does it work?
The reader send the M1 card a group of fixed-frequency electromagnetic waves, and the card has a built in LC series resonant circuit( its frequency is same with the frequency that signal Launches), the LC resonant circuit resonate the electromagnetic wave excitation, and thus the capacitor gets ged, the other end of this capacitor connects a single wizard electronic pump which will send the electric to store in another end of capacitor.
when the accumulated ge to 2V, this capacitor can be used as power for other circuits to provide the operating voltage, the card data will transmit out or access the data of the reader.


3. The main indicators of MiFare one - S50 
(1) The capacity: 8K-bit EEPROM
(2)  Divided into 16 sectors, each sector for four, each 16-byte block the access unit
(3)  Each sector has a separate password and access control
(4)  Each card has a unique serial number, 32 Bits
(5)  anti-collision mechanism to support multi-card operation
(6)  power supply comes with antenna, includes encryption control logic and communication logic circuit
(7)  The data retention period of 10 years, can be rewritten 100,000 times, read many times
(8) Operating temperature: -20 ℃ ~ 50 ℃ (huity 90%)
(9) Operating frequency: 13.56MHZ
(10)  communication speed: 106 the KBPS
(11)  read and write distance: 10 cm (and reader)Mifare one s50 s70 RFID IC card

4. The main indicators of MiFare one – S70 
(1) The capacity: 32K-bit EEPROM
(2) Divided into 40 sectors, 32 sectors, each sector storage capacity of 64 bytes (divided into four, each 16 bytes); Storage capacity of the eight sectors, each sector is 256 bytes(divided into 16 blocks of 16 bytes); the unit is block.
(3)  Each sector has a separate password and access control
(4)  Each card has a unique serial number, 32 Bits
(5)  anti-collision mechanism to support multi-card operation
(6) power supply comes with antenna, includes encryption control logic and communication logic circuit
(7) The data retention period of 10 years, can be rewritten 100,000 times, read many times
(8) Operating temperature: -20 ℃ ~ 50 ℃ (huity 90%)
(9) Operating frequency: 13.56MHZ
(10)  communication speed: 106 the KBPS
(11)  read and write distance: 10 cm (and reader)

As market main stream RFID IC card chips, it is widely used in these application cases:
(1) more frequent management system for a variety of reading and writing cards, such as food and beverage ges, touch pos restaurant system, time and attendance management system.
(2) a variety of card systems, such as attendance, Canteen, card access control system.


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