SLE 66R35 Infineon Technologies, SLE 66R35 Datasheet - Page 7

• Manufacturer Part Number: SLE 66R35
• Manufacturer: Infineon Technologies

Specifications of SLE 66R35

• Interface: ISO / IEC 14443 Type A
• Eeprom: 1,024.0 Byte
• Security Features: 4-byte UID, mutual three pass authentication with 48-bit keys
• Delivery Forms: Wafer, NiAu-bump, MCC2, MCC8
• Typical Application: Transport, Access Control

3 Circuit Description
SLE 66R35 / SLE 66R35I / SLE 66R35R consist of an EEPROM memory of 1 kByte organized in
16 sector with 4 blocks each containing 16 bytes, an analog interface for contactless energy and
data transmission and a control unit. The power supply and data are transferred to SLE 66R35 /
SLE 66R35I / SLE 66R35R via an antenna, which consists of a coil with few turns directly
connected to the module. No further external components are necessary. The circuit is designed to
communicate with a card-reader at an operating distance of up to 10 cm (or more) depending on
the reader-antenna configuration.
The chip is designed to meet the cost-optimized requirements of a basic security level. The
targeted applications are transport, corporate access, events and loyalty cards with basic security
requirements.
Figure 6
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Preliminary Short Product Information
Analog Contactless Interface
The Analog Contactless Interface comprises the voltage rectifier, voltage regulator and system
clock to supply the IC with appropriate power. Additionally the data stream is modulated and
demodulated.
Anticollision
Internal logic of SLE 66R35 / SLE 66R35I / SLE 66R35R ensures the recognition of several
cards in the field, which may be selected and operated in sequence. The Anticollision loop is
based on Single Size UID according to ISO/IEC 14443-3
Authentication Logic
Correct execution of any memory operation can only occur after the authentication procedure
with a specific key
Control Logic
Access to a block is defined by the associated access conditions for that block. These are
programmed individually for each block in a sector.
Arithmetic Unit
Arithmetic Capability: increment and decrement of values stored in a special redundant format.
EEPROM: 1 kByte organized in 16 sectors with 4 blocks by 16 bytes each. The last block of
each sector is called "Sector Trailer" and is used to store a pair of secret keys and
programmable access conditions for each block.
Block Diagram
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SLE 66R35I, SLE 66R35R
SLE 66R35
2011-03-10