ST25TA02K datasheet(44/50 Pages) STMICROELECTRONICS

tên linh kiện	ST25TA02K

Giải thích chi tiết về linh kiện	NFC Forum Type 4 Tag IC with 2-Kbit EEPROM

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Functional procedures

ST25TA02K

44/50

DocID027801 Rev 1

7.5

Unlocking an NDEF file

The RF host executes this procedure to read an NDEF file which has been locked

previously.

Select the NDEF Tag Application

Select the NDEF file

Present the NDEF file Write password by using the Verify command

Unlock the NDEF file by sending the Disable verification command.

7.6

Reaching the read-only state for an NDEF file

The RF host executes this procedure to read an NDEF file which has been locked

previously.

Select the NDEF Tag Application

Select the NDEF file

Transmit the NDEF file Write password by using the Verify command

Send an EnablePermanentState command.

7.7

Changing a File type Procedure

The RF host executes this procedure to change the File Type of a file for which all access

rights were previously granted.

Select the NDEF Tag Application

Select the File to be modified

Set the File Length to 0x00 using the UpdateBinary command

Send an UpdateFileType command with the New file Type as data.

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