AnsweredAssumed Answered

NTAG 5: is possible to set the Passwords also for the RF via I2C bus ?

Question asked by Antonio Cinelli on Apr 20, 2020
Latest reply on Apr 20, 2020 by Wigros Sun

Dear Support,

regarding the passwords settings of the NTAG5 family, is possible to set them also for the RFID/NFC communication using the I2C bus ?

I have read this in your AN12366:

 

7.3 Device Security configuration
The level of security can be defined with the device security configuration
(DEV_SEC_CONFIG) and can be written by both interfaces. If locked by security lock
cannot be updated anymore by any of the interfaces. The IC RF security features can
be chosen between AES tag/mutual authentication or plain password for NTAG 5 boost
(NTA5332) and NTAG 5 link (NTP5332) only. NTAG 5 switch (NTP5210) and NTAG 5
link (NTP5312) only offer plain password.
Form RF perspective there are three levels of security:
• 32-bit plain password
• 64-bit plain password
• AES: Available on NTAG 5 boost (NTA5332) and NTAG 5 link (NTP5332)
Security modes can be configured in DEV_SEC_CONFIG (3Fh).
For I2C perspective only plain password protection is implemented.

 

So if we wish to set only plain pws for RF and I2C communications, is possible to set the PWs fr the RF communication using the I2C but with the MCU ?

 

I think yes from this 7.3 paragraph of your AN in this sentence:

The level of security can be defined with the device security configuration
(DEV_SEC_CONFIG) and can be written by both interfaces. 

 

but I need your confirmation.

 

Thanks a lot

Outcomes