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參數(shù)資料
| 型號： | LRI512-C40 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件頁數(shù)： | 5/54頁 |
| 文件大小： | 351K |
| 代理商： | LRI512-C40 |
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LRI512
DATA RATE AND DATA CODING
The data coding implemented in the LRI512 uses
pulse position modulation. Both data coding
modes that are described in the ISO15693 are
supported by the LRI512. The selection is made
by the VCD and indicated to the LRI512 within the
Start of Frame (SOF).
Data Coding Mode: 1 Out of 256
The value of one single byte is represented by the
position of one pause. The position of the pause
on 1 of 256 successive time periods of 18.88 μs
(256/f
C
), determines the value of the byte. In this
case the transmission of one byte takes 4.833 ms
and the resulting data rate is 1.65 kbit/s (f
C
/8192).
Figure 5 illustrates this pulse position modulation
technique. In this figure, data E1h (225d) is sent by
the VCD to the LRI512.
The pause shall occur during the second half of
the position of the time period that determines the
value, as shown in Figure 6.
A pause during the first period transmit the data
value 00h. A pause during the last period transmits
the data value FFh (255d).
Figure 5. 1 Out of 256 Coding Mode
Figure 6. Detail of One Time Period
AI06656
0 1 2 3 . . . . . . . . 2 . . . . . . . . . . . . . . . . . . . . . 2 2 2 2
. . . . . . . . . 2 . . . . . . . . . . . . . . . . . . . . . 5 5 5 5
. . . . . . . . . 5 . . . . . . . . . . . . . . . . . . . . . 2 3 4 5
4.833 ms
18.88 μs
9.44 μs
Pulse
Modulated
Carrier
AI06657
2
2
5
18.88 μs
9.44 μs
Pulse
Modulated
Carrier
2
2
6
2
2
4
. . . . . . .
. . . . . . .
Time Period
one of 256
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LRI64 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
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| LRI64-A1S | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Memory TAG IC, 64-bit Unique ID with WORM User Area 13.56MHz, ISO 15693 Standard Compliant |
| LRI64-A1S/1GE | 功能描述:電可擦除可編程只讀存儲器 TAG IC 13.56 MHz W/ 64-bit Unique ID RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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