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why the NT3H1101 is sending NACK unstead of ACK?

Question asked by PengfeiLi PengfeiLi on Aug 2, 2018

hello everyone, I am using the NTAG NT3H1101  with MTK2502 and trying to interface it with I2C. i am having a problem with NTAG.First the MCU send  start single and  the slave address(0xaa), i should receive an ACK from the NTAG. but, the NATG is just holding high  the 9th clock.

can you please tell me why the NTAG is not ACK?

Thanks!!

 

 

 

nt3h1101 IIC

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