NTAG FD pin

[schakoma]

Hello. I'm using the NTAG I2C plus with Arduino pro mini. I need some help programming the FD pin to indicate to the reader that data is ready to be read from the I2C interface and if data has been read by the NFC interface. Thanks.

[danielchen]

Hi schakoma:

The NTAG I2C plus has several triggering possibilities to provide input to a connected microcontroller to signal events on the RF interface. This signaling can be done through the Field Detection pin or through the equivalent registers over I2C.

danielchen_0-1650845914673.png

Please refer to AN11579: How to use NTAG I2C plus for bidirectional.

https://www.nxp.com.cn/docs/en/application-note/AN11579.pdf

Regards

Daniel