ST25DV04K datasheet(159/200 Pages) STMICROELECTRONICS

Part #	ST25DV04K

Description	Dynamic NFC/RFID tag IC with 4-Kbit, 16-Kbit or 64-Kbit EEPROM, and fast transfer mode capability

PDF	200 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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159 / 200 page

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 92.

Figure 92. 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 93.

Figure 93. 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.

ST25DV04K ST25DV16K ST25DV64K

EOF when using one subcarrier

DS10925 - Rev 9

page 159/200

ST25DV04K Datasheet(PDF) 159 Page - STMicroelectronics