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AT88SC0204CRF-MR1 Datasheet(PDF) 2 Page - ATMEL Corporation |
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AT88SC0204CRF-MR1 Datasheet(HTML) 2 Page - ATMEL Corporation |
2 / 9 page 2 AT88SC0204CRF 5022CS–CRRF–12/06 Block Diagram Figure 1. Block Diagram Communications All personalization and communication with this device is performed through the RF interface. The IC includes an integrated tuning capacitor, enabling it to operate with only the addition of a single external coil antenna. The RF communications interface is fully compliant with the electrical signaling and RF power specifications in ISO/IEC 14443-2:2001 for Type B only. Anticollision operation and frame formatting are compliant with ISO/IEC 14443-3:2001 for Type B only. ISO/IEC 14443 nomenclature is used in this specification where applicable. The following abbreviations are utilized throughout this document. Additional terms are defined in the section in which they are used. • PCD – Proximity Coupling Device: the reader/writer and antenna • PICC – Proximity Integrated Circuit Card: the tag/card containing the IC and antenna • RFU – Reserved for Future Use: any feature, memory location, or bit that is held as reserved for future use • $ xx – Hexadecimal Number: denotes a hex number “xx” (Most Significant Bit on left) Anticollision Protocol When the PICC enters the 13.56 MHz RF field of the host reader (PCD), it performs a power on reset (POR) function and waits silently for a valid Type B polling command. The CryptoRF PICC processes the antitearing registers as part of the POR process. The PCD initiates the anticollision process by issuing an REQB or WUPB command. The WUPB command activates any card (PICC) in the field with a matching AFI code. RF Interface AC1 C AC2 Over Voltage Clamp VSS V DD Regulator Clock Extraction Data Extraction Command and Response EEPROM Data Transfer Password Verification Frame Formatting and Error Detection Interface Anticollision Random Number Generator Authentication Encryption and Certification Unit |
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