Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hi, I am quite new to NFC reader, I want to know if it is possible to read multiple TAGs simultaneously with one board?i have ST25R3911B-DISCO board and bunch of 14443A Tag.if it is possible, what is the correct way to do the action??
In the ST25DV data sheet, I read:"Energy harvesting can be set even if ST25DVxxx is in RF disabled or RF Sleep mode, or in Low power mode. In all these cases, ST25DVxxx will deliver power on V_EH pin if RF field is present."However this is not what I...
Hello,We are using ST25R3920 with another host MCU(NXP S32K116) in a project. Our customer want us to be able to update the firmwares of modules in the board via host MCU if a new feature or some problem fixes are needed.So my question is, does ST25R...
I am trying to use ST3993 to get distance between tag and the reader.Is there any SDK or function in the ST3993 to do that?
How to screening ST25RU3993 for Engineering Sample (ES) in our factory's incoming inspection and where is the ES marking located on its case?Currently in a stop production due to this issue.
I have ST25RU3993s with marking "E". I see a note in rev.11 datasheet mentioned not to used the "E" or "ES" marking for the production board. (1)Is the note still true? (2)If It's released in the field, what kind of failures do I expect?Thanks,-Tieng
The phone has NFC turned on and has recognized the ST25 tag，the STSW-ST25001 app cannot open enable mailbox and cannot achieve Data transfer，FTM
Hello,I'm currently prototyping a custom design utilizing the ST25RU3993 which should be nearly identical to the reference design HPEV. I've removed the external PA and 2nd antenna, but otherwise the design is very similar. I've attached the schemati...
I design NFC antenna using ST25TN01K(50pF) chip .This is my first time in RF design. I calculated data with edesignsuit that I shared first photo. Firstly I wonder is my design okay and proper? My design must be small and antenna coil inductance 2.5...
Hello.I have the latest version of Excel and when I open the .xlsm the following message appears: We have found a problem with content..... ¿Do you want to recover.....If I say yes all the formulas are broken. (I have the macros enable and the file i...
