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ST25TA02K Datasheet(PDF) 44 Page - STMicroelectronics

Part # ST25TA02K
Description  NFC Forum Type 4 Tag IC with 2-Kbit EEPROM
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25TA02K Datasheet(HTML) 44 Page - STMicroelectronics

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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.
1.
Select the NDEF Tag Application
2.
Select the NDEF file
3.
Present the NDEF file Write password by using the Verify command
4.
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.
1.
Select the NDEF Tag Application
2.
Select the NDEF file
3.
Transmit the NDEF file Write password by using the Verify command
4.
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.
1.
Select the NDEF Tag Application
2.
Select the File to be modified
3.
Set the File Length to 0x00 using the UpdateBinary command
4.
Send an UpdateFileType command with the New file Type as data.



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