參數(shù)資料
型號(hào): SLE44R35S
廠商: SIEMENS AG
元件分類: DRAM
英文描述: Interlligent 1K-byte EEPROM with Interface for Contactless Transistors,Security Logic and Anticollision(帶無接口晶體管,安全邏輯和防碰撞智能1K位EEPROM)
中文描述: Interlligent 1K字節(jié)EEPROM,帶有非接觸晶體管,安全和防沖突邏輯(帶無接口晶體管,安全邏輯和防碰撞智能一千位EEPROM的接口)
文件頁數(shù): 6/8頁
文件大?。?/td> 70K
代理商: SLE44R35S
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SLE 44R35S is designed to operate in the Mifare
system, a contactless proximity smart card
system. The system consists of a smart card on the one hand and a card reader together with an
antenna on the other hand.
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In the Mifare
system, the operating distance between card and reader antenna can vary from 0
cm up to 10 cm. The card’s antenna consists of a simple coil with a few turns embedded in plastic.
Mifare
cards are passive and work batteryless. The high speed RF communication interface
allows to transmit data with 106 Kbit/s.
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The Mifare
system is designed for optimal user-friendliness. The high data transmission rate
permits short transaction times. For example, a ticketing transaction can be handled in less than
100 ms so that the Mifare
card user does not need to stop at the reader target (antenna). The
Mifare
card may remain in the wallet of the user even if there are coins in it.
An intelligent anticollision function allows to operate more than one card in the field simultaneously.
The anticollision algorithm selects each card individually and ensures that the execution of a
transaction with a selected card is performed correctly without data corruption resulting from other
cards in the field.
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The Mifare
system is especially suited as well for the use in payment systems as in ticketing
systems, e.g. public transport applications. Both kinds of applications can be performed with the
same card. The Mifare
system offers real multi-functionality comparable to the features of the
processor card. Two different key sets for each memory sector support systems using key
hierarchies.
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In the Mifare
system design, special emphasis has been placed on security against fraud. An
access to the card memory is only possible after a three pass authentication. The serial number is
unique for each card and can never be changed. Each data transmission is enciphered.
Configurable access conditions protected by secret keys for memory operations as read or write
protect from misuse.
Antenna
Mifare
Card
Mifare
Read/Write Device
Data
Energy
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