Forum Replies Created

  • Re: Re: Is the USB CRv2 MultiReader LF+HF v2 compatible with MifareDESfire transponder

    22. January 2015 at 11:41     in reply to: Is the USB CRv2 MultiReader LF+HF v2 compatible with MifareDESfire transponder

    Andreas
    Hi,
    to get an answer you need to contact the Reader manufacturer.
    NXP is only the reader & transponder IC manufacturer.
    kind regards
    andreas
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    Re: Re: RFID RC522 Problem with reading cards & tags

    26. September 2014 at 13:41     in reply to: RFID RC522 Problem with reading cards & tags

    Andreas
    Hi,
    can you let us know which RC522 module and which SW you are using?
    Thx
    Andreas
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    Re: Re: Could I get access to a datasheet

    23. September 2014 at 12:59     in reply to: Could I get access to a datasheet

    Andreas
    Hi R.M. van Arkel

    please try this link to register @ the NXP DocStore: https://www.docstore.nxp.com

    Kind regards
    Andreas
    + 0  |  - 0

    Re: Re: PN512 EXPLORE BOARD cannot read MIFARE CARD

    22. September 2014 at 16:09     in reply to: PN512 EXPLORE BOARD cannot read MIFARE CARD

    Andreas
    Hi Nuno,
    to support you on this topic we need to know which µC board you are using. When you are using a NXP µC this side might help you:
    http://www.lpcware.com/content/project/lpcopen-platform-nxp-lpc-microcontrollers
    Kind regards
    Andreas
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    Re: Re: MFRC530 reader TVDD MAX current

    29. July 2014 at 17:25     in reply to: MFRC530 reader TVDD MAX current

    Andreas
    The 150mA is the limit of ITVDDD (transmitter current), i.e. any value above
    may damage the MFRC531.
    In principle a value slightly above might not immediately kill the reader IC,
    but damage it on the long term. However, the limit is the limit.

    BTW: the RC663, RC630 and RC631 have a limit of 200mA.
    + 0  |  - 0

    Re: Re: Antenna’s Question for CLRC663 application

    29. January 2014 at 13:54     in reply to: Antenna’s Question for CLRC663 application

    Andreas
    The Receiver is a fully differential circuit and can be used double ended or single ended:

    For single ended use (Quasi- Differential) of the receiver circuit it is strongly recommended to connect RxN and RxP to each other or to connect them by using the Rcv_Reg register (address 38h).But if the Rcv_Rx_single bit in the Rcv_Reg register is set to 1 -> Quasi-Differential, the unused Rx pin has to be open and not connected to Ground.

    For double ended use connect RxN and RxP, as recommended, to the
    transmitter circuit, directly after the EMC filter.
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