ST25TV02K datasheet(18/90 Pages) STMICROELECTRONICS

18 / 90 page

5.5.3

EAS configuration

Table 20. EAS_CFG

Command

Enable EAS (cmd code A5h) with option flag set to 1 and mask length ≠ 00h and EAS_ID, or

with option flag set to 0

Write EAS config (cmd code A8h)

Type

WO: possible under conditions set in the EAS_SEC configuration register and configuration

not locked

Bit

Name

Function

Factory value

b1-b0

EAS_CFG

Electronic article surveillance identifier configuration:

00: 256 bit payload (EAS block 1 to 8)

01: 128 bit payload (EAS block 1 to 4)

10: 64 bit payload (EAS block 1 to 2)

11: 32 bit payload (EAS block 1)

00h

b15-b2

RFU

000000b

The EAS parameters (ID, Telegram, mode (set/reset) can be definitely locked with the Lock EAS command (refer

to Section 6.4.27 Lock EAS).

5.5.4

EAS description

The EAS (electronic article surveillance) feature is mainly used for library management, applications, requiring an

anti-theft protection.

This is programmable and configured by custom commands and optionally protected by the configuration

password (when programming EAS_SEC to 1) and can be locked.

A telegram can be stored using standard write command depending of its configured length (EAS block 1 – EAS

Block 8).

The EAS feature can be activated, reset, locked using a set of custom commands (see Section 6.4.24 Set EAS,

Section 6.4.25 Reset EAS, Section 6.4.26 Enable EAS, Section 6.4.27 Lock EAS, Section 6.4.28 Write EAS

ID and Section 6.4.29 Write EAS CONFIG).

The EAS feature is reset (deactivated) by default.

ST25TV02K ST25TV512

Electronic article surveillance (EAS)

DS12074 - Rev 11

page 18/90

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