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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Resolved! ST25R3916 VDD_RF regulator bypass mode

Hello!Is there any additional information about on how to use on ST25R3916 the bypass mode of internal VDD_RF regulator to be able to a transmitter output current higher than 350 mA (up to 500 mA) supplied from an external source.In ST25R3916 datashe...

Resolved! ST25DV I2C RF conflict

I want to use my ST25DV with both I2C and RF interfaces. There is no clear arbitrage between the 2,  but the first is served. Moreover, I tested that while I2C is operating in reading and writing bytes in a for loop, the RF can corrupt the data in so...

Saltr.1 by Associate II
  • 577 Views
  • 3 replies
  • 2 kudos

Resolved! Recomend chip for EMV NFC reader

Hi ST Community,I'm developing an NFC reader for a payment interface and require recommendations for suitable STMicroelectronics chips that are compliant with EMV Level 1 and preferably Level 2Regards 

dhruvit by Associate II
  • 451 Views
  • 3 replies
  • 1 kudos

Resolved! ST25R3916 Max Allowed Voltage Level on RFI

We've had issue with reading NTAG215 cards with some devices, presumably due to the large spread-out antenna, so I'm working on a better understanding of the power output so that we can properly calibrate devices out of manufacturing.Currently, I do ...

LltWc by Senior
  • 533 Views
  • 2 replies
  • 0 kudos

Resolved! ST25R3911B-DISCO - activating specific UID

I'm trying out the ST25R3911B-DISCO board to evaluate how to read data from multiple 14443A RFID tags. Under the Polling tab I can see all the UIDs for the tags near the board.  However, when I go over to the NFC Type 2 tab, if I select "Configuratio...

Ralphie by Associate
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  • 1 replies
  • 0 kudos

Resolved! Example code for ST25R3916B

This is my first time developing a project to read NFC using the ST25R3916B (I bought the Discovery kit for testing). The first thing I did was open CubeMX, but unfortunately, the ST25R3916B is not listed as a supported device for code generation. Th...

Resolved! Max power on ST25R3911B

Hi,I use the component ST25R3911B. I'm able to tune some antennas, no issues.But, now I have to use some RF switches to drive several antennas. Unfortunaly the RF switches have a resistor Ron and this drops the output power of the RF reader. The tuni...

loich by Associate II
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  • 2 replies
  • 0 kudos

Resolved! Building NFC Tap for iOS

Hi, I'm trying to compile NFC Tap for iOS but no luck so far.  I've resolved the following issues, by following the advice of other posts on this forum:Add st25sdk header search pathRemove ST25NFCAppClip from buildFix signing and j2objc pathAdd st25s...

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JCard.3 by Associate III
  • 662 Views
  • 7 replies
  • 0 kudos

Resolved! ST25R100 Poller tag discovery

Hi thereStarting pointI am currently working on porting our NFC implementation from the ST25R3916 to the ST25R100.We will also replace our current library (Lib-NFC & ST_25r & RFAL) and use the current libraries (RFAL and NDEF) from ST.For the migrati...

Stef2 by Associate III
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  • 14 replies
  • 0 kudos