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ST25TV02K bảng dữ liệu(PDF) 79 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  NFC Type 5 / RFID tag IC with up to 2-Kbit EEPROM, product identification and protection
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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ST25TV02K bảng dữ liệu(HTML) 79 Page - STMicroelectronics

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A.4
EOF when using one subcarrier
A.4.1
High data rate
For the Fast commands, the EOF comprises a logic 0 that includes four pulses at 423.75 kHz and an
unmodulated time of 9.44 µs, followed by 12 pulses at 423.75 kHz (fC / 32) and an unmodulated time of 37.76 µs,
as shown in Figure 38.
Figure 38. End of frame, high data rate, one subcarrier, fast commands
56.64 µs
18.88 µs
A.4.2
Low data rate
For the fast commands, the EOF comprises a logic 0 that includes 16 pulses at 423.75 kHz and an unmodulated
time of 37.76 µs, followed by 48 pulses at 423.75 kHz (fC / 32) and an unmodulated time of 113.28 µs, as shown
in Figure 39.
Figure 39. End of frame, low data rate, one subcarrier, fast commands
226.56 µs
75.52 µs
Note:
For SOF and EOF in fast commands, bit coding using two subcarriers is not supported.
ST25TV02K ST25TV512
EOF when using one subcarrier
DS12074 - Rev 11
page 79/90



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