ST25 NFC/RFID tags and readers

Resolved! if the ST25R3916 is compatible with NXP's tag/reader?

Hello I am gonna use ST25R3916 for NFC in our products, but I am wondering that if the ST25R3916 is compatible with NXP's tag/reader? I remember that NXP's tag/reader has it's own encryption for communication... so I worry that ST25R3916 can't...

Resolved! Auto Antenna tuning in poling

I evaluate ST25R3916 by using ST25R3916-DISCO kit and STSW-ST25R010.In Antenna features tab, I confirmed AAT_A and AAT_B values changed for tuning when a piece of metal is approached to the  antenna​, but in poling tab, these value did not change whe...

Resolved! CR95HF Antenna Design Query

Posted on April 03, 2018 at 12:29Hello,I am working with CR95HF IC. I have some questions regarding it.1. How much read range can be achieved with how much Henry of antenna inductance. Can any one Please suggest.?2. Is it required that Antenna induc...

Resolved! I would like to ask if its possible two points to communicate each other with nfc? More precisely i want each point to receive and send data. Is there a development kit for nfc in st that you suggest? Thanks in advance, Nick

Resolved! How ST25R3911B Read & Write a NFC business card

I have ST25R3911B-DISCO and its GUI. How can I read a NFC business card, I have ST and NXP two type business card, all is ISO14443A type. How can I read business card information? If I have a blank card, how can I make a business card?

Resolved! How to Read the TID memory from an RFID tag

Has anyone implemented their own firm ware. I can so far successfully retrieve the EPC number from a tag, however I'm struggling to get a valid RN16 and CRC combination when using the REQ_RN command. I would like to do this to be able to access the T...

Resolved! How to use the Req_RN direct command (9Fh)

I have successfully read an epc tag, my next step is to issue the the Req_RN command. I hav set the RX lenthg register ready to receive 4 bytes of data and issue the Req_RN command. OIn the occasion that I do receive the expected 4 bytes of data the...

Resolved! Can anyone explain the bytes read back from the TID memory?

I can see in the example firmware that the TID memory is read in multiple stages, with the first 8 bytes read first. In my application I need only these first 8 bytes, so following a very similar process I can read these bytes. I am working with a CR...

Resolved! EMC cutoff frequency of ST25R3911B

The EMC cutoff frequency of ST25R3911B is defined as 11.75MHz with L= 270 nH, C= 680p. However, the antenna resonates at 13.56MHz. I can understand if the cutoff frequency is defined between 14 -18 MHz to suppress the 2rd harmonic mode. Could you gi...