ST25TV02K datasheet(17/90 Pages) STMICROELECTRONICS

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5.5

Electronic article surveillance (EAS)

5.5.1

EAS registers

Table 17. EAS_SEC

Command

Read Configuration (cmd code A0h) @02h

Write Configuration (cmd code A1h) @02h

Type

R: always possible

W: if RF configuration security session is open (the proper configuration password has been

presented before) and configuration not locked

Bit

Name

Function

Factory value

W_PROTECTION_EAS

EAS security write protection:

0: EAS parameters are always writable

1: EAS parameters are write protected by configuration password.

In case of lock_EAS command has been previously used, this bit is

don’t care and EAS parameters are non-writable.

b7-b1

RFU

0000000b

Note:

Refer to Table 4. System configuration memory map accessible through write_cfg and read_cfg commands for

the AES security activation register.

Table 18. EAS_TELEGRAM register

Command

Enable EAS (cmd code A5h) with option flag set to 0

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

Write Single (cmd code 21h) to Blocks [248 to 255] (1)

Read Single blocks at @248 to 255 returns an error.

Type

R: possible with enable EAS command only if set EAS command has been presented before

W: possible under conditions set in the EAS_SEC configuration register and EAS

configuration not locked

Bit

Name

Function

Factory value

b255-b0

EAS_TELEGRAM

Electronic article surveillance telegram.

All bits = 0b

1. Write Single Block at addresses 248 to 255 correspond to EAS blocks 1 to 8 respectively.

5.5.2

EAS ID

Table 19. EAS_ID

Command

Enable EAS (cmd code A5h) with option flag set to 1 and mask length set to 0h

Write EAS ID (cmd code A7h)

Type

R: possible with enable EAS command only if set EAS command has been presented before

W: possible under conditions set in the EAS_SEC configuration register and EAS

configuration not locked

Bit

Name

Function

Factory value

b15-b0

EAS_ID

Electronic article surveillance identifier value.

0000h

ST25TV02K ST25TV512

Electronic article surveillance (EAS)

DS12074 - Rev 11

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