SLE55R01 Datasheet, PDF (6/8 Pages) Infineon Technologies AG – Security & Chip Card ICs

SLE 55R01
1.1 Circuit Description
SLE 55R01 consists of a EEPROM memory unit, an analog interface for contactless energy and
data transmission, a control and a crypto unit.
Analog
Contactless
LA
Interface
Power
Clock
Power Circuit
Rectifier
Data
Clock Extractor
Power on Reset
Voltage Regulator
LB
Operational
Mode
Crypto Unit
Memory Unit
IO Command Anticollision Authentication
Memory
Access
Control Unit
Figure 4 Block diagram of SLE 55R01
• Analog Contactless Interface consists of:
– Rectifier
– Voltage Regulator
– Power on Reset
– Modulator / Demodulator
– Clock Extractor
• Operational mode
The access to the memory depends on the actual mode of SLE 55R01; the memory is
accessed according to plain or protected mode when the PICC is selected.
• Crypto Unit
Generates random numbers, checks and calculates message authentication code (MAC).
• Memory Unit
160 bytes organised in 16 pages with 8 + 2 bytes each.
• Control Unit
— Decoding and execution of the commands
— Bit oriented anticollision method with 4 or 7 byte long serial numbers (complying to
ISO/IEC 14443-3 − cascade level 1 and 2 are supported). It allows the recognition of
several cards in the field which may be selected and operated in sequence.
— Access to key-protected sectors is only permitted after authentication with an appropriate
key. Only one sector is opened within a session. One sector is optionally configurable
without key protection and authentication.
— Memory access to the pages according to the individual access conditions programmed
for every page and every key
Short Product Information
6/8
2001-01-31