lri64 STMicroelectronics, lri64 Datasheet - Page 7

• Manufacturer Part Number: lri64
• Description: Memory Tag Ic At 13.56 Mhz, With 64-bit Unique Id And Worm User Area, Iso15693 And Iso18000-3 Mode 1 Compliant
• Manufacturer: STMicroelectronics

LRI64
1
Description
The LRI64 is a contactless memory, powered by an externally transmitted radio wave. It
contains a 120-bit non-volatile memory. The memory is organized as 15 blocks of 8 bits, of
which 7 blocks are accessible as Write-Once Read-Many (WORM) memory.
Figure 1.
The LRI64 is accessed using a 13.56 MHz carrier wave. Incoming data are demodulated
from the received Amplitude Shift Keying (ASK) signal, 10% modulated. The data are
transferred from the reader to the LRI64 at 26 Kbit/s, using the “1-out-of-4” pulse encoding
mode.
Outgoing data are sent by the LRI64, generated by load variation on the carrier wave, using
Manchester coding with a single sub-carrier frequency of 423 kHz. The data are transferred
from the LRI64 to the reader at 26 Kbit/s, in the high data rate mode.
The LRI64 supports the high data rate communication protocols of ISO 15693 and ISO
18000-3 Mode 1 recommendations. All other data rates and modulations are not supported
by the LRI64.
Table 1.
Figure 2.
1. n/c means not connected internally.
AC1
AC0
Logic diagram
Signal names
MLP connections
AC0
n/c
n/c
n/c
Memory
WORM
120-bit
1
2
3
4
Antenna Coil
Antenna Coil
LRI64
Demodulator
Manchester
8
7
6
5
Modulator
Regulator
Supply
Power
Load
AC1
n/c
n/c
n/c
ASK
AI11612
AC0
AC1
AI08590
Description
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