ST25 NFC/RFID tags and readers

Resolved! Problem of ST25R3911 ERR_RF_COLLISION

I used ST25R3911 and ST25DV16K for nfc.​I frequently get an error message about ERR_RF_COLLISION from rfalST25xVPollerFastReadMessage.​What is the problem?​As far as I know that RF_COLLISION is happened when the NFC reader has multiple NFC Tags nerab...

Resolved! M24LR04 energy harvesting shuts down with certain phones

We are evaluating the M24LR04 for a specific application where energy harvesting is required. We have configured the energy harvesting mode 3 to ensure that it will attempt to continue to harvest with low magnetic field strength. However, we regula...

Resolved! What does a Security Status = 63 mean when reading a single block from a RFID tag using the ST25R3911B and ISO-15693?

Hi,Hardware Setup: MCU: XMC4200 (infineon) connected to ST25R3911B over SPI, tag is ISO15693 compliantSoftware: Using the rfal library and the iso15693 APIs in en.STSW-ST25RFAL001 (V2.1.2)I am able to successfully read the inventory, write a single b...

Resolved! About the receiving circuit of EVAL. What should I connect to the antenna?　CIR or Coupler. Is LNA unnecessary?

In Figure 2 of st25RU3993 DateSheet, the CIR is used in front of the antenna, but the coupler is used for T4 of EVAL.I think if I want to use carrier cancellation, ​the Coupler needs to be used.Which one is recommended?​​Is LNA unnecessary?​Does addi...

Resolved! Hi, I'm using ST25DV04K. I'm trying to write 16 Bytes in System Configuration Area, but after two Bytes of the stream I get a NACK from the device. Instead, if I write two Bytes at a time, it works and I can write everything... Suggestions?

Resolved! Using CR95HF in tag detect mode

Hello,I am trying to use the CR95HF chip in tag detect mode. I am communicating with the chip over UART and am trying to save power by putting the chip into tag detect mode so it will only wake up when a tag is detected.However, in case of a system ...

Resolved! STM32 3993 read tags unable to operate

Hello! Dear ST technician! When I inventory the GB29768 tags , then read tags, In tag memory, read from area:"Could not read tag..." Warning, unable to operate, I used the chip STM32L476 +3993 provided by your company and the ori...

Resolved! Why ST25RU3993_Reader_Suite not detect ST25RU3993-EVAL board?

Hi, I bought new ST25RU3993-EVAL from Digikey. And download en.STSW-ST25RU001.zip on ST web site.ST25RU3993_Reader_Suite software Installed to windows7 PC. Also installed FTDI drivers. When i put USB cable to PC, Red LED is ON. I see new "USB Serial ...

Resolved! ST25R3916 - Is it implementable in an Android device?

We have a current device that utilizes the st25r3911b and the stollmann stack.Now that the Stollmann NFC protocol stack is no longer, is there a stack that can replace it in Android in the the ST world and the ST25R3916 or is NXP the only NFC soluti...

Resolved! Use single ended antenna no AAT with ST25R3916

What should I take care of when using a single ended 50 Ohm antenna without AAT?What changes I need to do with the analog configures comparing to the example one given in X-CUBE-NFC6? Are there some references for this usage case?Thanks.