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M24LR04E-R 데이터시트(PDF) 55 Page - STMicroelectronics

부품명 M24LR04E-R
상세설명  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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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M24LR04E-R 데이터시트(HTML) 55 Page - STMicroelectronics

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M24LR04E-R
Bit representation and coding
Doc ID 022208 Rev 5
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11.2
Bit coding using two subcarriers
11.2.1
High data rate
A logic 0 starts with eight pulses at 423.75 kHz (fC/32) followed by nine pulses at
484.28 kHz (fC/28), as shown in Figure 31. Bit coding using two subcarriers is not supported
for the Fast commands.
Figure 31.
Logic 0, high data rate
A logic 1 starts with nine pulses at 484.28 kHz (fC/28) followed by eight pulses at
423.75 kHz (fC/32), as shown in Figure 32. Bit coding using two subcarriers is not supported
for the Fast commands.
Figure 32.
Logic 1, high data rate
11.2.2
Low data rate
A logic 0 starts with 32 pulses at 423.75 kHz (fC/32) followed by 36 pulses at 484.28 kHz
(fC/28), as shown in Figure 33. Bit coding using two subcarriers is not supported for the Fast
commands.
Figure 33.
Logic 0, low data rate
A logic 1 starts with 36 pulses at 484.28 kHz (fC/28) followed by 32 pulses at 423.75 kHz
(fC/32) as shown in Figure 34. Bit coding using two subcarriers is not supported for the Fast
commands.
Figure 34.
Logic 1, low data rate
37.46µs
ai12074
37.46µs
ai12073
149.84µs
ai12072
149.84µs
ai12075



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