Document
BL75R06SM 8K-bit EEPROM Contactless smart card chip
Description
BL75R06SM Contactless smart card chip consists of the RF-Interface, the Digital Control Unit
and the 8 Kbit EEPROM. Operating distance is up to 10cm(depending on antenna geometry).
The communication layer complies to parts 2 and 3 of the ISO/IEC 14443A standard. The chip
supports PHILIPS’s MIFARE card reader. It can be used for ticketing systems in public
transport and comparable applications.
Features
RF interface : ISO/IEC 14443 Type A
Operating frequency : 13.56 MHz
Fast data transfer : 106 kbit/s
Memory size : 8 Kbit
No battery needed : contactless transmission of data and supply energy
Anti-collision : allows to operate more than one card in the field simultaneously
Operating distance : Up to 100mm ( depending on antenna geometry)
Transaction possible with moving card
Half-duplex communication protocol using handshake
Following mechanisms are implemented in the contactless communication link between
RWD and card to ensure very reliable data transmission :
--- Anti-collision mechanism
--- 16 bits CRC pre block
--- Parity bits for each byte
--- Bit count checking
--- Bit coding to distinguish between “1”,”0”,and no information
--- Channel monitoring (protocol sequence and bit stream analysis)
Offer multi-application functionality
--- 8 K-bit EEPROM(16 Sectors×4 Blocks×16 Bytes×8 Bit)
--- Organised in securely separated 16 sectors supporting multi-application use
--- each sector consists of 4 blocks
--- A block is the smallest part to be addressed and consists of 16 bytes
--- Individual set of two keys per sector(per application)
--- User definable access conditions for each memory block
--- Arithmetic : increment and decrement
Data retention of 10 years
Write endurance 100,000 cycles
Typical operation parameter :
--- Anti-collision time : 3.0ms + 1.0ms
--- Authentication : 2.0ms
--- Read block : 2.5ms
--- Write block : 6.0ms
--- Transfer : 4.5ms
Typical ticketing transaction : < 100ms
Identification of card + 6 Blocks read (768 bit, 2 Sector Authentication) + 2 Blocks
write(256bit) with Backup
http://www.belling.com.cn
-1Total 9 Pages
8/16/2006
BL75R06SM 8K-bit EEPROM Contactless smart card chip
Functional Description Block Diagram
BL75R06SM Contactless smart card IC consists of the RF-Interface, the Digital Control Unit and the 8 Kbit EEPROM, as show in the below figure:
RF Interface
Rectifier
Voltage Regulator
Modulator/ Demodulator
Power On Reset
Digital Control Unit
Coding and Decoding Unit
Anti-collision
Communication Unit
Arithmetic Unit
Clock Control
Crypto Unit
EEPROM
EEPROM EEPROM Interface Memory
Control Unit
Authentication & Access Control
Transaction Sequence Diagram
http://www.belling.com.cn
-2Total 9 Pages
8/16/2006
BL75R06SM 8K-bit EEPROM Contactless smart card chip
Commands The BL75R06SM RFID ICs support the following commands: 1 Request Standard / All
After Power On Reset (POR) of a card it can answer to a request command - sent by the RWD to all cards in the antenna field - by sending the answer to request code (ATQA according to ISO/IEC 14443A). 2 Anticollision Loop In the anticollision loop the serial number of a card is read. If there are several cards in the operating range of the RWD, they can be distinguished by their unique serial numbers and one can be selected (select card) for further transactions. The unselected cards return to the standby mode and wait for a new request command. 3 Select Card With the select card command the RWD selects one individual card for authentication and memory related operations. The card returns the Answer To Select(ATS) code (= 08h), which determines the type of the selected card. 4 3 Pass Authentication After selection of a card the RWD specifies the memory location of the following memory access and uses the corresponding key for the 3 pass authentication procedure. After a successful authentication all memory operations are encrypted. 5 Memory Operations After authentication any of the following operations may be performed: Read block Write block Decrement: Decrements the contents of a block and stores the result in a temporary internal data-register Increment: Increments the contents of a block and stores the result in the data-register Restore: Moves the contents of a block into the data-register Transfer: Writes the contents of the temporary internal data-register to a value block
Data Integrity
Following mechanisms are implemented in the contactless communication link between RWD and card to ensure very reliable data transmission: • 16 bits CRC per block • Parity bits for each byte
Security
To provide a very high security level a three pass authentication according to ISO 9798-2 is
used.
Three Pass Authentication Sequence
a. The RWD specifies the sector to be accessed and chooses key A or B.
b. The card reads the secret key and the access conditions from the sector trailer. Then
the car.