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CR14 Datasheet(PDF) 3 Page - STMicroelectronics |
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CR14 Datasheet(HTML) 3 Page - STMicroelectronics |
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3 / 46 page ![]() CR14 3/46 6 CR14 ISO14443 type-B Radio Frequency data transfer . . . . . . . . . . . . . . 26 6.1 Output RF Data Transfer from the CR14 to the PICC (Request Frame) . . . . 26 6.2 Transmission Format of Request Frame Characters . . . . . . . . . . . . . . . . . . 27 6.3 Request Start Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6.4 Request End Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.5 Input RF Data Transfer from the PICC to the CR14 (Answer Frame) . . . . . . 28 6.6 Transmission Format of Answer Frame Characters . . . . . . . . . . . . . . . . . . . 29 6.7 Answer Start Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.8 Answer End Of Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.9 Transmission Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.10 CRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 7 Tag access using the CR14 coupler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7.1 Standard TAG Command Access Description . . . . . . . . . . . . . . . . . . . . . . . 31 7.2 Anti-Collision TAG Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 8 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 9 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 10 Package mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 11 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Appendix A ISO14443 type B CRC calculation . . . . . . . . . . . . . . . . . . . . . . . . . . 44 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 |
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