AT88SC1616CRF [Summary Datasheet]
Atmel-5026GS-CryptoRF-AT88SC1616CRF-Datasheet-Summary_012014
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3. 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.
Table 3-1. Terms
3.1 Anticollision Protocol
When the PICC enters the 13.56MHz 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 anti-tearing 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. The REQB command performs the same function but does not affect a
PICC in the Halt state. The CryptoRF command set is available only after the anticollision process has been completed.
3.2 CRC Error Detection
A 2-byte CRC_B is required in each frame transmitted by the PICC or PCD to permit transmission error detection. The
CRC_B is calculated on all of the command and data bytes in the frame. The SOF, EOF, start bits, stop bits, and EGT
are not included in the CRC_B calculation. The 2-byte CRC_B follows the data bytes in the frame.
Figure 3-1. Location of the Two CRC_B Bytes within a Frame
3.3 Type A Tolerance
The RF Interface is designed for use in multi-protocol applications. It will not latch or lock up if exposed to Type A signals
and will not respond to them. The PICC may reset in the presence of Type A field modulation but is not damaged by
exposure to Type A signals.
Abbrev. Term Definition
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).
SOF K data bytes CRC1 CRC2 EOF
