lri2k STMicroelectronics, lri2k Datasheet - Page 13

• Manufacturer Part Number: lri2k
• Description: 13.56 Mhz, 2048-bit Eeprom Tag Ic With 64-bit Uid And Kill Code, Iso 15693 And Iso 18000-3 Mode 1 Compliant
• Manufacturer: STMicroelectronics

LRI2K
1.3
1.3.1
1.3.2
1.3.3
Initial dialogue for vicinity cards
The dialog between the vicinity coupling device (VCD) and the vicinity integrated circuit card
or VICC (LRI2K) takes place as follows:
These operations use the RF power transfer and communication signal interface described
below (see
(Reader Talk First).
Power transfer
Power is transferred to the LRI2K by radio frequency at 13.56 MHz via coupling antennas in
the LRI2K and the VCD. The RF operating field of the VCD is transformed on the LRI2K
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.
Frequency
The ISO 15693 standard defines the carrier frequency (f
13.56 MHz ±7 kHz.
Operating field
The LRI2K operates continuously between H
A VCD must generate a field of at least H
volume.
activation of the LRI2K by the RF operating field of the VCD
transmission of a command by the VCD
transmission of a response by the LRI2K
The minimum operating field is H
The maximum operating field is H
Power
transfer,
Frequency
min
and
max
and has a value of 150 mA/m rms.
min
and has a value of 5 A/m rms.
Operating
min
and not exceeding H
and H
field). This technique is called RTF
max
c
) of the operating field as
.
max
in the operating
Description
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