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參數(shù)資料
| 型號： | EM4350A6WW7E |
| 廠商： | EM Microelectronic |
| 英文描述： | 1 KBit READ / WRITE CONTACTLESS IDENTIFICATION DEVICE |
| 中文描述： | 1千位讀/寫非接觸式識別裝置 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 386K |
| 代理商： | EM4350A6WW7E |
R
EM4150
EM4350
Communication from the Transceiver to the Transponder (RECEIVE MODE) (cont.)
While the transceiver is sending data to the transponder, two different modulations will be observed on both coils. During
the first half of the bit period, the EM4150 is switching "ON" its modulation device causing a modulation of the RF field. This
modulation can also be observed on the transceiver's coil. The transceiver sending a bit "0" will switch "OFF" the field,
causing a 100% modulation being observed on the transponder coil.
Bit
Period
DATA
:
Copyright
2004, EM Microelectronic-Marin SA
Transceiver
Coil
Transponder
Coil
"1"
"1"
"1"
"0"
"0"
"0"
16
16
Periods of RF field (Opt 32):
Modulation induced by the Transceiver
Modulation induced by the Transponder
16
*
*
Recommended
Minimum
: 7/4 periods (Opt64/Opt32)
: 1 period
16
Periods of RF field (Opt 64):
32
32
32
32
Fig. 23
11
www.emmicroelectronic.com
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