AT88RF04C-MY1G View Datasheet(PDF) - Atmel Corporation

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Description

Manufacturer

AT88RF04C-MY1G

CryptoRF® Specification

Atmel Corporation 

Appendix P. RF Specifications and Characteristics

The ISO/IEC 10373-6 Test Methods standard contains the test requirements for characterizing ISO/IEC 14443 devices.

ISO/IEC 10373-6 utilizes PICCs in the ID-1 credit card size format for all tests. These test methods and the RF signal

interface requirements of ISO/IEC 14443 contain PICC and PCD performance requirements that are dependent on the

physical size of the PICC antenna.

The ISO/IEC 14443 set of standards do not differentiate PCD and PICC requirements that are PICC antenna size

dependent from those that are not. In this Appendix all of the RF requirements are summarized, and antenna size

related parameters are identified.

P.1.

Electrical Characteristics

ISO/IEC 14443 devices, including the CryptoRF family, have their performance specified in terms of the RF interface of

the PICC and/or the PCD (Reader). Both components of the RF interface must perform within the specified limits for

communications to occur. An ISO/IEC 14443 PICC is not expected to operate with PCDs operating outside the

specifications.

P.1.1. AC Characteristics

Table 112. CryptoRF PICC Characteristics [Not PICC Antenna Size Dependent](1)

Symbol

Parameter

Min Nominal Max

fs

Load Modulation Subcarrier Frequency (fc / 16)

847.06 847.50 847.94

Units

kHz

ISO/IEC Spec.

14443-2 9.2.3

BPSK Load Modulation Phase Shift

180

Degrees 14443-2 9.2.5

ETU

Elementary Time Unit = Bit Time ( fc /128)

9.4346 9.4395 9.4444

μS 14443-2 9.2.1

EGT

Extra Guard Time (PICC to PCD communication)

0

2

ETU 14443-3 7.1.2

ATQB TR0 Guard Time (for ATQB response only)

8

10

ETU 14443-3 7.1.6

TR0

Guard Time ( for all other command responses)

8

880

ETU 14443-3 7.1.6

TR1

Synchronization Time

10

11

ETU 14443-3 7.1.6

TPOR

TPOR-AT

TWR

Polling Reset Time (no anti-tearing to process)

Polling Reset Time (anti-tearing write to process)

Write Cycle Time of EEPROM Memory

5

mS 14443-3 5

10

mS

1.6

2.0

mS

Note: 1. Nominal values at 25° C. Values are based on characterization and are not tested.

The RF Interface characteristics of the CryptoRF family are listed in Table 112. Compliance with these specifications

has been verified by characterization of PICCs with ID-1 size antennas, but these items are not antenna size

dependent. The parameters in Table 112 are guaranteed by design. Appendix O contains illustrations of the RF

interface timing parameters.

140 AT88SC0808/1616/3216/6416CRF, AT88RF04C

5276C–RFID–3/09

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