AN4054 Datasheet, PDF (1/13 Pages) STMicroelectronics – This application note highlights the key differences

AN4054
Application note
Comparison of RF addressing modes of
low-density and high-density ISO/IEC 15693 devices
Introduction
This application note highlights the key differences of RF addressing modes between the
products of the ISO/IEC 15693 STMicroelectronics family, which is composed of the dual
interface EEPROM products (M24LRx) and the long range contactless products (LRix).
The memory size is a key point and has an impact on some specific parameters of the RF
(Radio frequency) commands.
Dual interface memory M24LRx overview
M24LRx devices are a dual-interface EEPROM. They feature an I²C interface. They are also
a contactless memory powered by the received carrier electromagnetic wave. Thus, its
internal memory can be addressed by either an I²C bus or the RF interface.
The M24LRx products are compliant to the ISO/IEC 15693 recommendation for radio-
frequency power and signal interface.
Long range contactless tag LRxK overview
LRxK devices are contactless memory powered by the received carrier electromagnetic
wave with an EEPROM. They are compliant with the ISO/IEC 15693 specification.
Table 1 lists the products concerned by this application note.
.
Table 1. Applicable products
Type
Applicable products
Dual Interface EEPROM
RFID & RF Memory ICs
M24LR04E-R, M24LR64-R, M24LR64E-R, M24LR16E-R
LRi1K, LRi2K, LRiS2K, LRiS64K
November 2012
Doc ID 022825 Rev 3
1/13
www.st.com