SLE 44R35S MCC8 Infineon Technologies, SLE 44R35S MCC8 Datasheet - Page 5

• Manufacturer Part Number: SLE 44R35S MCC8
• Manufacturer: Infineon Technologies

Specifications of SLE 44R35S MCC8

• Operating Temperature (max): 70C
• Mounting: Surface Mount
• Pin Count: 2
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

SLE 44R35S is designed for single applications (e.g. access control or electronic tickets) with small
memory requirements. SLE 44R35S consists of an EEPROM memory of 1 Kbyte organised in
16 sector with 4 blocks each containing 16 bytes, an analogue interface for contactless energy and
data transmission and a control unit. The power supply and data are transferred to SLE 44R35S
via an antenna which consists of a coil with a few turns directly connected to the chip. No further
external components are necessary. The circuit is designed to communicate with a card reader at
an operating distance between 0 cm and 10.0 cm.
– Modulator / Demodulator
– Rectifier
– Clock Separator
– Power on Reset
– Voltage Regulator
The internal logic ensures the recognition of several cards in the field which may be selected
and operated simultaneously
Preceding any memory operation the authentication procedure with secret keys for the single
sector ensures permitted memory access only
The memory can only be accessed according to the access conditions programmed for every
block
Arithmetic capability: Increase and decrease of values. Values are stored in a special
redundant format
called "trailer" and stores a pair of secret keys and programmable access conditions for each
block
Coil
: 16 sectors with 4 blocks each containing 16 bytes. The last block of each sector is
Analogue
Interface
collision
Authenti-
Anti-
cation
Logic
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Control Unit
Arithmetic
Control
Logic
RAM
Unit
EEPROM-
Interface
EEPROM