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toamsm
Visitor II
September 14, 2023
Solved

Modify UID of ST25DV04K

Hi,

Is there any possibility for a user to modify the UID of the ST25DV04K, update specific part of memory that holds the value of the UID, or is it readonly? 

Regards Tomas

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Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
September 14, 2023

Welcome @toamsm, to the community!

The UID of the ST25DV04K is written by STMicroelectronics on the production line and is read-only, i.e. cannot be changed. This is also mentioned in its data sheet, e.g in table 84: UID access for RF access and I2C access = RO.

Does it answer your question?

Regards
/Peter

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2 replies

Peter BENSCH
Peter BENSCHBest answer
ST Technical Moderator
September 14, 2023

Welcome @toamsm, to the community!

The UID of the ST25DV04K is written by STMicroelectronics on the production line and is read-only, i.e. cannot be changed. This is also mentioned in its data sheet, e.g in table 84: UID access for RF access and I2C access = RO.

Does it answer your question?

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
Brian TIDAL
Brian TIDAL
ST Technical Moderator
September 15, 2023

Hi,

can you describe your application and your UID modification use case?

If you want to manage your own UID, you can use the ST25R3916/18 in type A or Type F Card Emulation mode.

Rgds

BT

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
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