Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
st25r3911b in 14443A mode TX: BITRATE_848 RX: BITRATE_1695 tx is successful，when receive , switch B mode , but fail :CRC error ,soft framing error and hard framing error how can I solve this problem or Which registers still need to be modified?
Hi,we're working with the ST25R3918-AQWT in a design that's powered by a CR2054 coin cell. We're trying to minimize the peak current draw through the NFC coil since right now we're seeing about a 500mV droop on VBAT during our NFC read. We've already...
Hi everyone,I'm currently working with the ST25R3916B NFC reader IC and I have a few questions regarding the XTI and XTO pins as well as the MCU_CLK output.From the datasheet, I understand that:XTI is the input and XTO is the output of the internal c...
Hello, I'm using STEVAL-SMARTAG2. In the future I want to design my own PCB with ST25DV64KC and STM32L4P5-CGU6. But for now I want to create my own program and try it on STEVAL-SMARTAG2.If I import example project in CubeIDE and complie it, It works...
Hi all. I'm coding an app in C# that uses the ST25R3916DISCOComm.dll native methods to access a ST25DV04 tag. I have got many things working, including bing able to read the tag memory passively, and some complex protocols using the Mailbox mode. How...
Hello, I would like if anyone had to use X-NUCLEO-NFC08A1 expansion boards with NUCLEO-U083RC and could reuse successfully the examples for NFC08A1? I see there are a few, but for other MCUs Thanks, Mihai
Hello,I have purchased the "STEVAL-25R200SA – Discovery Kit for the ST25R200 high-performance NFC device" and attempted to run the sample application STSW-ST25R020 (Firmware for STEVAL-25R200 kit) available on the portal.I was able to build and flash...
The AN5322 specifies the Murata LXRW series as the voltage-controlled capacitor. Murata's capacitor is EOL. What alternatives are there?
Hello, I am trying to work with a st25r3918 rfid(should be very similar to st25r3916 and the st25r3916 driver should cover its functionality as I have understood). I am trying to validate the interrupts(mainly the nfc for tag reading but for t...
Hi everyone,I'm working on a project that requires multiplexing 6 NFC antennas to a single NFC reader, such as the ST25R3916B. From my understanding, because the reader uses separate RFOx (TX) and RFIx (RX) lines for differential communication, I nee...