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LRI1K bảng dữ liệu(PDF) 13 Page - STMicroelectronics

tên linh kiện LRI1K
Giải thích chi tiết về linh kiện  1024-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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LRI1K bảng dữ liệu(HTML) 13 Page - STMicroelectronics

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LRI1K
Description
Doc ID 17170 Rev 3
13/86
1.3
Initial dialogue for vicinity cards
The dialog between the vicinity coupling device (VCD) and the vicinity integrated circuit card
or VICC (LRI1K) takes place as follows:
●
activation of the LRI1K by the RF operating field of the VCD
●
transmission of a command by the VCD
●
transmission of a response by the LRI1K
These operations use the RF power transfer and communication signal interface described
below (see Power transfer, Frequency and Operating field). This technique is called RTF
(reader talk first).
1.3.1
Power transfer
Power is transferred to the LRI1K by radio frequency at 13.56 MHz via coupling antennas in
the LRI1K and the VCD. The RF operating field of the VCD is transformed on the LRI1K
antenna as an AC voltage which is rectified, filtered and internally regulated. The amplitude
modulation (ASK) on this received signal is demodulated by the ASK demodulator.
1.3.2
Frequency
The ISO 15693 standard defines the carrier frequency (fc) of the operating field as
13.56 MHz ±7 kHz.
1.3.3
Operating field
The LRI1K operates continuously between Hmin and Hmax.
●
The minimum operating field is Hmin and has a value of 150 mA/m rms.
●
The maximum operating field is Hmax and has a value of 5 A/m rms.
A VCD must generate a field of at least Hmin and not exceeding Hmax in the operating
volume.



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