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Should the PN532 oscillator work at the start?

Question asked by Fabian Romo on Apr 10, 2018
Latest reply on Apr 17, 2018 by Fabian Romo

Hi.

 

I made a prototype based on the following board:

 

 

http://www.playrobot.com/robotpress/wp-content/uploads/2015/08/PlayRobot_CSR0002_PN532-NFC-RFID.pdf

 

 

I tried to communicate via RS232 with PN532, but I don't get any response. Check the connections and voltage levels and everything seems fine, except that I don't see the oscillating voltage at the terminals of the crystal with my oscilloscope.

 

 

I read that at the beginning the device is in low power consumption. Should it be normal in the absence of oscillation?

 

Thanks in advance for any comments or suggestions-

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