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M24LR04E-R 数据表(PDF) 57 Page - STMicroelectronics

部件名 M24LR04E-R
功能描述  4-Kbit EEPROM with password protection, dual interface & energy harvesting: 400 kHz I²C bus & ISO 15693 RF protocol at 13.56 MHz
PDF  142 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M24LR04E-R 数据表(HTML) 57 Page - STMicroelectronics

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M24LR04E-R
M24LR04E-R to VCD frames
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For the Fast commands, the SOF comprises an unmodulated time of 113.28 µs, followed by
48 pulses at 423.75 kHz (fC/32), and a logic 1 that includes an unmodulated time of 37.76 µs
followed by 16 pulses at 423.75 kHz, as shown in Figure 38.
Figure 38.
Start of frame, low data rate, one subcarrier, fast commands
12.2
SOF when using two subcarriers
12.2.1
High data rate
The SOF comprises 27 pulses at 484.28 kHz (fC/28), followed by 24 pulses at 423.75 kHz
(fC/32), and a logic 1 that includes nine pulses at 484.28 kHz followed by eight pulses at
423.75 kHz, as shown in Figure 39.
Bit coding using two subcarriers is not supported for the Fast commands.
Figure 39.
Start of frame, high data rate, two subcarriers
12.2.2
Low data rate
The SOF comprises 108 pulses at 484.28 kHz (fC/28), followed by 96 pulses at 423.75 kHz
(fC/32), and a logic 1 that includes 36 pulses at 484.28 kHz followed by 32 pulses at
423.75 kHz, as shown in Figure 40.
Bit coding using two subcarriers is not supported for the Fast commands.
Figure 40.
Start of frame, low data rate, two subcarriers
226.56µs
ai12081
75.52µs
112.39µs
ai12082
37.46µs
449.56µs
ai12083
149.84µs



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