ST25 NFC/RFID tags and readers

Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.

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Resolved! How to start ST25R100 in Wakeup mode?

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...

noise on Vdd ST25R3911B

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...

Sans titre.png loich_0-1750668092824.png
loich by Associate II
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Resolved! ST25R300 Integrated Oscillator possible?

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...

KRauccio by Associate
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