LRIS2K_11 datasheet(11/98 Pages) STMICROELECTRONICS

Nome de Peças	LRIS2K

Descrição Electrónicos	2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant

PDF	98 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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11 / 98 page

LRIS2K

Description

Doc ID 13888 Rev 9

11/98

Description

The LRIS2K is a contactless memory powered by the received carrier electromagnetic

wave, which follows the ISO 15693 recommendation for radio frequency power and signal

interface. It is a 2048-bit electrically erasable programmable memory (EEPROM). The

memory is organized as 64 blocks of 32 bits. The LRIS2K 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 LRIS2K load variation using Manchester coding with

one or two subcarrier frequencies at 423 KHz and 484 kHz. Data are transferred from the

LRIS2K at 6.6 Kbit/s in low data rate mode and 26 Kbit/s high data rate mode. The LRIS2K

supports the 53 Kbit/s in high data rate mode in one subcarrier frequency at 423 kHz.

The LRIS2K also features a unique 32-bit multi-password protection scheme.

Figure 1.

Pad connections

Table 1.

Signal names

Signal name

Function

AC1

Antenna coil

AC0

Antenna coil

AI12853

AC1

LRIS2K

AC0

Power

Supply

Regulator

Manchester

Load

Modulator

ASK

Demodulator

2048 bit

EEPROM

memory

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