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CR14 Datasheet(PDF) 3 Page - STMicroelectronics

Part No. CR14
Description  Low Cost ISO14443 type-B Contactless Coupler Chip with Anti-Collision and CRC Management
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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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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