Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
HelloI’m currently designing an NFC product using the ST25R3911B reader IC and evaluating two standard NFC antennas from Leankon for read distance performance:LK1860701 (larger size)LK1860601 (smaller size)Test Setup & Observations:Matching Circuit O...
Hello, I am currently working on initializing ST25R3916B (X-NUCLEO-NFC08A1) with Nucleo-H563ZI microcontroller, using the Zephyr RTOS and the zephyr-st25r driver. My primary goal is to successfully initialize the ST25R3916B chip to a state where it c...
I want to use ST25R100 directly with register settings without a library. How can I start it in wake up mode? When I try the code I gave below, the Interrupt pin comes to a fixed 3.3V and does not change.void st25r100_WakeUp_Init(void) { // 0. Wake-u...
Hi,I have some noise on the Vdd pin of the ST25R3911B.I send the fieldon() command and there is a huge noise at 27MHz frequency on the Vdd (8) pin.Below is a screenshot of the refdesign disco Vdd pin with the fieldon and the noise observed on my boar...
Hi,I would like to know if it is possible to use another oscillator source other than a crystal for the ST25R300?I saw another post for the ST25R3911B, Is it possible to use a Clock Oscillator instead of Quartz crystal oscillator?, although obviously...
Hello, I am working with X-CUBE-NFC6 example and I am able to read and write data to a rfid tag successfully. Just as a note, hw configuration is nucleo U083RC boards with NFC08A1 expander board for rfid reader. I would like to be able t...
Hi everyone,I’m currently working on a project that involves NFC technology, but I’m a bit unsure which NFC tag would be the most suitable for my use case. Maybe some of you have experience with similar requirements.My main goals:Product authenticati...
Hi There, I am developing a product where I need to remotely wake up my electronics from 0.5-1.5 m, and also read back some user information about the unit I just woke up (e.g. serial number, firmware version the MCU is running etc). It needs to be a...
Hello, I am planning on implementing a ST25R3916 circuit starting from X-NUCLEO-NFC08A1 schematic, but LXRW0YV600-054 is marked EOL for 2026. Is there any recommendation for change of the implementation? Thank you! Best regards, Dragos
Hello!I'm completely lost in my search for a solution.Question description: The 25R3916 in 14443A emulation mode. When sending data to the reader with a length of up to 255 bytes, everything works perfectly. However, if I need to send data longer tha...