XRAG2

Description

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The dialog between the reader and the XRAG2 is conducted through the following

consecutive operations:

●

activation of the XRAG2 by the UHF operating field of the reader

●

transmission of a command by the reader

●

transmission of a response by the XRAG2

This technique is called RTF (reader talk first).

The XRAG2 is specifically designed for extended-range applications that need automatic

item identification. The XRAG2 provides a fast and flexible anti-collision protocol that is

robust under noisy and unpredictable RF conditions typical of RFID applications. The

XRAG2 EEPROM memory can be read and written, which enables users to program the

EPC code and user memory on site, if desired.

The TID memory is written by STMicroelectronics during the manufacturing process.

Figure 3.

UFDFPN connections

1.

There is an exposed central pad on the underside of the UFDFPN package. This is pulled, internally, to

2.

See Package mechanical data section for package dimensions, and how to identify pin-1.

Table 1.

Signal names

Signal name

Function

AC1

Antenna pad

AC0 (GND)

Antenna pad

AI15109

1

6

23

54

AC1

AC0

NC NC

NC NC