lri2k STMicroelectronics, lri2k Datasheet - Page 10

• 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

Description
1
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Description
The LRI2K is a contactless memory powered by the received carrier electromagnetic wave.
It is a 2048-bit electrically erasable programmable memory (EEPROM). The memory is
organized as 64 blocks of 32 bits. The LRI2K is accessed via the 13.56 MHz carrier
electromagnetic wave on which incoming data are demodulated from the received signal
amplitude modulation (ASK: amplitude shift keying). The received ASK wave is 10% or
100% modulated with a data rate of 1.6 Kbit/s using the 1/256 pulse coding mode or a data
rate of 26 Kbit/s using the 1/4 pulse coding mode.
Outgoing data are generated by the LRI2K load variation using Manchester coding with one
or two subcarrier frequencies at 423 kHz and 484 kHz. Data are transferred from the LRI2K
at 6.6 Kbit/s in low data rate mode and 26 Kbit/s fast data rate mode. The LRI2K supports
53 Kbit/s in high data rate mode with one subcarrier frequency at 423 kHz.
The LRI2K follows the ISO 15693 recommendation for radio-frequency power and signal
interface.
Figure 1.
Table 1.
Figure 2.
1. n/c means not connected internally.
AC1
AC0
Signal name
Pad connections
Signal names
MLP connections
AC0
n/c
n/c
n/c
Antenna coil
Antenna coil
EEPROM
2048 bit
memory
1
2
3
4
LRI2K
8
7
6
5
Demodulator
Manchester
AC1
n/c
n/c
n/c
Modulator
Regulator
Supply
Power
Load
ASK
Function
AI11612
AI12065
AC0
AC1
LRI2K