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mfrc522 internal buffer

Question asked by Ricardo Oliveira on May 1, 2019
Latest reply on May 2, 2019 by IvanRuiz

Hello.

 

I'm having a hard time trying to understand MFRC522 datasheet and procedure to read UID, authentication and so on. In datasheet item 10.3.1.2, there is a command "Mem" which transfers 25 bytes from FIFO buffer to the internal buffer. But what is this "internal buffer"? What is its size? what it stores? There's no mention of internal buffer anywhere in datasheet except for Mem command, but it doesn't explain it. Can anybody help me?

 

mfrc522 datasheet

 

 

 

Thanks

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