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SLE55R16C Datasheet(PDF) 6 Page - Infineon Technologies AG |
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SLE55R16C Datasheet(HTML) 6 Page - Infineon Technologies AG |
6 / 8 page SLE 55R16 Short Product Information 6 / 8 2001-01-31 1.1 Circuit Description SLE 55R16 consists of a EEPROM memory unit, an analog interface for contactless energy and data transmission, a control and a crypto unit. Power Power Circuit Rectifier Clock Extractor Power on Reset Voltage Regulator Data Memory Access IO Command Authentication Control Unit Analog Contactless Interface Operational Mode Crypto Unit Memory Unit LB LA Anticollision Clock Figure 4 Block diagram of SLE 55R16 • 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 55R16; 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 2560 bytes organised in 256 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 |
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