4 Replies Latest reply on May 18, 2018 3:47 AM by nipac_3233561

    RFID interference with Touchpad

    nipac_3233561

      We are using TRF7970 for RFID reader (13.56Mhz).

       

      Touch pads, Proxy and RFID antenna on single PCB. (Please Refer Attached Image)

       

      1. We are using 12 button keypad and button '8' used for proxy sensor as well as button.

      2. Configuration by Ezclick tool. (Configuration detail in attachment)

      3. It works fine when RFID reader is disabled but when we enabled the RFID reader to detect the card we are getting false interrupt of button pressed from cypress.

       

      Please verify the configuration detail and let me know if I missed any thing else.

      I don't know why we are getting false interrupt of button pressed when we enabled RFID reader.

       

       

      On more observation, when we enabled the RFID after getting proxy event RFID reader not able to read the card as it works fine before. I don't understand why they are disturb each other.