UM0853 datasheet(27/56 Pages) STMICROELECTRONICS

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UM0853

How to control the RF and I²C channels from your screen

Doc ID 16609 Rev 3

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Figure 46 shows the security status bytes for the blocks located at addresses 00FAh to

0109h (sector 07 & sector 08).

Figure 46.

Security status bytes for sectors 07 and 08

3.2.9

Write AFI command

The Write AFI button launches a Write AFI command. The data in the dedicated field next

to the Write AFI button are written to the AFI register.

Figure 47.

Write AFI command

3.2.10

Write DSFID command

The Write DSFID button launches a Write DSFID command. The data in the dedicated field

next to the Write DSFID button are written to the DSFID register.

Figure 48.

Write DSFID command

3.2.11

Lock AFI command

The Lock AFI button launches a Lock AFI command. The execution of this command locks

the AFI field permanently.

Figure 49.

Lock AFI command

Caution:

Once the AFI field has been locked, it cannot be unlocked.

For this reason, a warning (shown in Figure 50) is displayed before locking the AFI. To abort

the Lock AFI command, click on Cancel. To confirm the command, click on OK.

UM0853 Datasheet(PDF) 27 Page - STMicroelectronics