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ST25R3911B bảng dữ liệu(PDF) 9 Page - STMicroelectronics |
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9 / 129 page DocID029656 Rev 2 9/129 ST25R3911B List of figures 9 List of figures Figure 1. ST25R3911B block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 2. Minimum configuration with single sided antenna driving (including EMC filter) . . . . . . . . 14 Figure 3. Minimum configuration with differential antenna driving (including EMC filter). . . . . . . . . . 14 Figure 4. Receiver block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 5. Capacitive sensor block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 6. Phase detector inputs and output in case of 90º phase shift . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 7. Phase detector inputs and output in case of 135º phase shift . . . . . . . . . . . . . . . . . . . . . . 28 Figure 8. ST25R3911B power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Figure 9. Exchange of signals with microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 10. SPI communication: writing a single byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 11. SPI communication: writing multiple bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 12. SPI communication: reading a single byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 13. SPI communication: loading of FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 14. SPI communication: reading of FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 15. SPI communication: direct command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 16. SPI communication: direct command chaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 17. SPI general timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 18. SPI read timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 19. Direct command NFC Initial Field ON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Figure 20. Direct command NFC Response Field ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Figure 21. ISO14443A states for PCD and PICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure 22. Selection of MRT and NRT for a given FDT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Figure 23. Flowchart for ISO14443A anticollision with ST25R3911B . . . . . . . . . . . . . . . . . . . . . . . . . 57 Figure 24. FeliCa™ frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Figure 25. Transport frame format according to NFCIP-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Figure 26. Connection of tuning capacitors to the antenna LC tank . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Figure 27. Example of sub-carrier stream mode for scf = 01b and scp = 10b . . . . . . . . . . . . . . . . . . . 70 Figure 28. Example of BPSK stream mode for scf = 01b and scp = 10b. . . . . . . . . . . . . . . . . . . . . . . 71 Figure 29. Example of Tx in Stream Mode for stx = 000b and OOK modulation . . . . . . . . . . . . . . . . . 71 Figure 30. ST25R3911B QFN32 pinout(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Figure 31. TCASE vs. power with different copper area at Tamb = 25°C . . . . . . . . . . . . . . . . . . . . . 123 Figure 32. RthCA vs. copper area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Figure 33. QFN32 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 |
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