ST25 NFC/RFID tags and readers

Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.

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ST25DVCryptoDemo iOS not working

Hello @all, I've downloaded ST25DVCryptoDemo for iOS from here, in order to take a look into the demo code for a new project.Once I've tried to build the Demo app I've got a big amount of errors. In fact the console gave me this message "too many err...

Screenshot 2025-10-06 at 12.16.17.png
Andrea123 by Associate II
  • 1241 Views
  • 29 replies
  • 2 kudos

Resolved! I2C and GPO pin max input voltage

I am using ST25DV04KC tag and using the V_EH pin to power the VCC of the tag only( It will generate around 3.3V which is enough to power up the tag in I2C mode I believe) . I am looking for guidance on the maximum pullup voltage on the I2C and GPO li...

Magvel by Associate II
  • 47 Views
  • 3 replies
  • 1 kudos

ST25R3911B SPI Issues on custom board

Hello,I developing a board with ST25R3911B and STM32F103RFT6. Im trying to read Chip ID, but it always reads 255. On the scope i can see CS pin driven low, clock and MOSI line outputing signals, but no response on the MISO line. The solder joints loo...

qwdwdwwq_0-1763032156656.png qwdwdwwq_2-1763032249075.png qwdwdwwq_3-1763032803170.png 20251113_121747.jpg
qwdwdwwq by Associate II
  • 173 Views
  • 5 replies
  • 0 kudos

ST25R3920B discovery board

Hi I am planning to evaluate the ST25R3920B for NFC reader applicaiotn in automotive.I only find STEVAL-25R3916B kit on your website, based on your presentation file, this kit is also valid for ST25R3920B, it is right?if not, where can I find the sui...

LeoWu by Associate
  • 93 Views
  • 2 replies
  • 0 kudos