0

I'm trying to get the power consumption of a MFRC522 RFID module down, currently while running it consumes about 4mA. There should be a way to put it into sleep mode, I just can't find any documentation on it. I'm using the module with a arduino currently if that helps; and this is the module itself : MFRC522

1 Answer 1

1

http://www.nxp.com/documents/data_sheet/MFRC522.pdf

Look at section 8.6.2 Soft power-down mode.

5
  • I still don't get how to implement this in my arduino code.
    – Sam W
    Apr 14, 2015 at 19:03
  • First, that wasn't your question. Secondly, you didn't say how you connected it. Are you using SPI or UART? What library are you using?
    – Gerben
    Apr 14, 2015 at 20:04
  • I didn't know there was anything other than an SPI library for it; but currently using SPI.
    – Sam W
    Apr 15, 2015 at 1:27
  • Two questions, one answer. I'm done helping you.
    – Gerben
    Apr 15, 2015 at 15:09
  • Sam, it sounds like you're asking two different questions: "How do I put the MFRC522 into sleep mode?" and "How do I send commands, such as the soft power-down command, from an Arduino to the MFRC522?". I suggest you open a separate, independent question to ask that second question, as recommended by meta.stackexchange.com/questions/39223/… .
    – David Cary
    Sep 12, 2015 at 4:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.