M24LR04E-R Datasheet, PDF (58/142 Pages) STMicroelectronics – 4-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz

M24LR04E-R to VCD frames
M24LR04E-R
12.3
12.3.1
EOF when using one subcarrier
High data rate
The EOF comprises a logic 0 that includes eight pulses at 423.75 kHz and an unmodulated
time of 18.88 µs, followed by 24 pulses at 423.75 kHz (f_C/32), and by an unmodulated time
of 56.64 µs, as shown in Figure 41.
Figure 41. End of frame, high data rate, one subcarrier
37.76µs
113.28µs
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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
(f_C/32) and an unmodulated time of 37.76 µs, as shown in Figure 42.
Figure 42. End of frame, high data rate, one subcarrier, fast commands
18.88µs
56.64µs
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12.3.2
Low data rate
The EOF comprises a logic 0 that includes 32 pulses at 423.75 kHz and an unmodulated
time of 75.52 µs, followed by 96 pulses at 423.75 kHz (f_C/32) and an unmodulated time of
226.56 µs, as shown in Figure 43.
Figure 43. End of frame, low data rate, one subcarrier
151.04µs
453.12µs
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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 (f_C/32) and an
unmodulated time of 113.28 µs, as shown in Figure 44.
Figure 44. End of frame, low data rate, one subcarrier, Fast commands
75.52µs
226.56µs
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Doc ID 022208 Rev 5