AN4433 datasheet(10/34 Pages) STMICROELECTRONICS

Il numero della parte	AN4433

Spiegazioni elettronici	Storing data into the NDEF memory of M24SR

PDF	34 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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10 / 34 page

M24SR specificities

AN4433

10/34

DocID025791 Rev 1

Figure 3. NDEF file layout

Note:

In Figure 3, the colors have the following meaning:

–

Orange: NDEF message length,

–

Green: NDEF message content,

–

Red: remaining non-readable bytes)

To be able to read beyond NDEF message, M24SRxx-Y products offer a proprietary

command: ExtendedReadBinary command.

This command can read the bytes beyond NDEF message, until the end of the file.

See doc [6]. for more information on this command.

2.3

UpdateFileType command

NFC Forum Type 4 Tag has 2 types of data files: NDEF and Proprietary files.

Natively, M24SRxx-Y products contain 1 mandatory NDEF file.

M24SRxx-Y products offer a proprietary command to turn the type of the file from one type

to the other UpdatedFiletype

For more details on this command, see doc. [6].

Warning:

–

Turning NDEF file to Proprietary one, makes the tag no more NFC compliant; only

proprietary application will be able to deal with the tag (see Section 1.1).

AN4433 Scheda tecnica(PDF) 10 Page - STMicroelectronics