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LRIS2K bảng dữ liệu(PDF) 15 Page - STMicroelectronics

tên linh kiện LRIS2K
Giải thích chi tiết về linh kiện  2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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LRIS2K bảng dữ liệu(HTML) 15 Page - STMicroelectronics

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LRIS2K
Description
15/102
1.3
Initial dialogue for vicinity cards
The dialog between the vicinity coupling device (VCD) and the vicinity integrated circuit
Card or VICC (LRIS2K) takes place as follows:
●
activation of the LRIS2K by the RF operating field of the VCD.
●
transmission of a command by the VCD.
●
transmission of a response by the LRIS2K.
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 LRIS2K by radio frequency at 13.56 MHz via coupling antennas
in the LRIS2K and the VCD. The RF operating field of the VCD is transformed on the
LRIS2K antenna to 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 LRIS2K 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 shall generate a field of at least Hmin and not exceeding Hmax in the operating
volume.



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